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Singxer SU-1 KTE (Kitsune Tuned Edition) – Tuned PSU (3.2uV output noise!)

We have spent a lot of hours with the Singxer SU-1 and recommend this product to many of our customers. It pairs well with most any dac! This SU-1 also has proven to bring the most out whatever dac you choose to pair with it.

Recently we have been modding the SU-1 to improve the power supply.

 

We have a KTE edition we have been working on and a few prototypes approx 3uV and 125db PSRR. Also in the process having had upgrading the caps on the main board and the psu board. Pure silver wire is used for hookup wire, an upgraded fuse, pure copper Kitsune Badging, and these KTE editions will come with an **optional ultra premium HDMi i2s cable (Supra HD5 0.5M HDMi i2s cable). So far we are very pleased with the results. Below are some photos of the KTE SU-1 and we are gauging the interest for these as a product we would offer. Please contact us for any specifics or if you’d like to place a pre-order.  Complete installation modding service on a new SU1 with all components and labor included. HDMi cable is optional extra. Upgrades are available if you own the SU1 and purchased from KitsuneHiFi originally. The cost is between 330-380usd plus shipping cost to and from (price varies if you choose High Retention USB connector or none.  Please contact us if you’re interested.


Solid copper KitsuneHiFi fox badging is available for KTE products (we sell these to customers who would like them for their official KTE dac)

email us with your serial # to verify and the price of the badges vary. Below are a few samples of our KTE badging

Here are some internal photos of our KTE edition SU1

Pure silver OCC solid core wire was used for the PSU to mainboard connection (new film caps and power caps
 Take note the new 5 caps used on the mainboard
KitExcellent components have been chosen for the SU1 KTE. New photos will be updated soon to show current components in use. They are different than photos and improved design since these photos were taken.

 

 

 

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Audio-GD NOS11 – Custom with many extras!

I’ve owned this Audio-GD Master 11 for a little over a year and it’s served me very well as my end game DAC/Amp for headphone use.  It’s more than capable to drive HE6 headphones and even can power speakers from the dual 3pin output on the front panel! No joke! it’s truly a beast! I’ve done a lot of mods to this, or I should say i’ve shipped it to the factory and had Kingwa himself do all the updates/upgrades!

 

Up for sale is my beloved Audio-GD Master11 – originally purchased direct from Kingwa when it was released. It was sent back to him to update to the NOS11 at factory.

 

*Updates were Norne Audio Silvergarde S wiring to replace ALL the copper OCC wire in the amp/dac.

*All connectors replaced with EiZZ tellurium copper/gold plated. (XLR and RCA’s.*)

*Kingwa also hardwired or soldered the upgraded gain stages (+6db gain for a total of 22+DB)

*This has the Amanero Combo 384 USB module

*HDMi i2S module options installed. Please note all these upgrades.

*WA Chip on the DSP

*3M AB5050S EMI/RF film on the pcm1704uk’s, and over the front panel output wires/connectors to shield from Eddy Current from the R-Core transformers.

*Updated with the newest firmware in Early December (nice increase of soundstage and detail retrieval. I would say 5-8% increase/improvement from previous firmware/DSP)

*Black Screw update (replaced all silver screws on front/sides etc)

 

I’m selling this to fund our new home that is in need of renovations.This is a one of a kind dac/amp and a very high end setup. There is tremendous value in this gear. The wire alone is several hundred dollars, and the connectors are several hundred dollars. I shipped it back to China for 260usd to have the owner of Audio-GD do these update/upgrades. So add labor too. I hope this goes to another fellow Audio-GD enthusiast. This is an incredible amp/dac and one of the best i’ve heard. Truly an end game setup. It will drive any headphone and do so with ease!

 

Also comes with aluminum remote control (not shown in photos.) perfect shape.

 

This will come shipped in original box. Please allow 80USD to ship to USA only. and buyer pays paypal fees 2.9% – Email us if you’re interested in this DAC/AMP

price is 1900usd + 80 shipping/paypal fees. USA only

 

 

 

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iFi Audio Comes to Kitsune HiFi!

ifi_logo

iFi

About them….

iFi is a brand new line of electronics with trickle-down technology licensed from AMR and aimed primarily at the future, Computer Audio generation. All iFi products boast Class A analogue circuitry with no DSP and the signal stays ‘Bit Perfect’ throughout.

How a product looks and performs matters, but so does its impact on the environment. That’s why nearly every iFi product and its packaging are made from highly recyclable materials like aluminum, paper, recycled plastic and why we refuse to use harmful toxins in our components. They do this to ensure that every product they release meets our environmental standards.

 

We’re so excited to share our new discovery with you we’re offering free shipping on everything iFi

 

Products we carry from iFi. Why we chose to carry the product…….

PRO –

 Pro iCAN

We chose to carry the Pro iCan because this amp has more performance bang for its buck on the market. It includes the option of Solid State output, Tube output, and a of Solid State AND Tube combo output. On paper, the measurements, are better than most amps on the market, in practice it lives up to it standards. We feel this is one of the best headphone amplifiers on the market today and would like to share it with you! Outputs include, balanced outputs, 4-Pin XLR, dual 3-Pin XLR, and 3.5 mm TRRS. The remaining outputs are a 3.5 mm TRS and two single ended 6.35 mm. Lastly, its future ready with an output for an electro-static module .

pro-ican-01-132

Accessories –

SPDIF iPurifier

 53 mil-spec component (BOM) that stands packed to the brim (top and bottom views)spdif-launch453x327

iFi has been hard at work on changing the notoriously unrecognizable unbalanced wave into a true Square Wave, to even out signal and reduce jitter and is what we audiophile enthusiasts appreciate. Bit Perfect audio ensures the audio signal remains unchanged handling  44.1 / 48 / 88.2 / 96 / 176.4 / 192kHz; 16 to 24 Bit, DSD/DoP, and even Dolby Digital and DTS.  Galvanic isolation prevents noise contamination in the signal. To further reduce noise jitter and drift a large number of complete audio samples helps absorb variation in signal. With co-axial/optical input AND co-axial/optical output enabling compatibility with any and every product from mass market Apple TV to a transport audiophile DAC.  Add that extra, included in box, iPower ‘quieter than battery’ 1uV noise floor adapter, and low power consumption what else could you ask for. <300 femto second crystal clock with a precision of 0.001Hz fine tunes the signal and limits drift.

Active Noise cancellation

Any noise in our power and signal inputs distorts the perfect sound quality we’ve put so much time, effort and money into achieving.

The following accessories include active noise cancellation based on military radar technology actively generating an identical signal in the opposite phase which neutralizes the sound providing a clean power supply signal. When measured, this drops noise by 100 times or 40 dB compared to the Common Noise Filter.

DC iPurifier

blue_new_brand-453x327

A laptop uses a switch mode power supply and this device filters the power, improving it to the level of a linear power supply, this is why we use it on our personal laptop and other mobile listening stations. This provides ultra clean, low noise power, with active noise cancellation,  noticeably reducing the noise floor. Also this features a reversed polarity protection/notification light stopping power input preventing potential damage to your device. You can also improve your the performance of your existing power supply by adding this inline with a DC output cable.

iPower (5V, 9V, 12V and even 15V versions)

ifi ipower ipower61 walloutlet

An ultra low noise floor DC adapter, 1uV compared to the average audiophile linear power supply which measures 20uV. We like to use these for powering devices such as USB modules, DACs, AMPs, DIY projects and other devices such as RPi (Raspberry Pi), Arduino, Microrendu, Logitech Squeezebox, Uptone Regen, Paul Pang USB card, etc.

iPurifier 2

iFi Audio iPurifier 2

Cleaning up the digital USB audio chain by reclocking, rebalancing and regenerating the USB transmission. Clean up your downstream DAC by restoring Signal level, reduce Jitter reduce Common Mode noise, rebalance signal, impedance Matching. We use one of these in our Audio-gd NFB-28 it increases the resolution of the top end detail and removes some of the harshness that delta sigma chips are known for. Future ready for all present and future PCM/DSD/DXD formats – without restriction.

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KitsuneHifi aka HoloAudio USA brings you a new product that will excite your senses!


This is the “Level3” KitsuneTuned Spring Dac Above

This is the “Level2” Rise Ji Edition Spring Dac Above

 


Kitsune HiFi carefully chooses products that we want to offer to our customers and be unique and/or stand out from all these audio supply stores. We have recently been talked with a very talented engineer that is the brains behind Holo Audio. Jeff Zhu is the man behind the curtain and has impressed us with his knowledge and his newest line of products he offers. The Spring DAC is his newest product and is capable of DSD native on an R2R DAC!  This spring is capable of DSD512 native and actually running on his bespoke discrete ladder DAC! This unique DAC is not your run of the mill DAC, it’s full of unique and well thought out designs and implementations. Patented R2R technology. This is the first discrete DAC that has linear compensation and this allows for ultimate music reproduction accuracy. Dual R2R network for PCM, and Dual R2R network for DSD! We will be offering the first Spring DAC’s in the USA and the Level 3/Kitsune Tuned edition is Exclusive to us.   We won’t stock more than a few at a time, and the wait time is usually a few weeks.

You may be asking… well what is so special about this DAC? The first Discrete R2R dac with Linear compensation…what is this?

There’s an additional R2R ladder in the Spring, it compensates the main R2R ladder. It works like trimming, but trimming is to change the resistor value. This additional R2R ladder is digitally controlled and will accurately compensate the resistor tolerance. For example, the msb of 16 bits should have the value of 32768, but due to tolerance, it represents 32700 in real world results. Then that additional R2R ladder will compensate 68 into it. Thus it now becomes 32700+68=32768.  What this means is that it’s likely the most precise Discrete dac on the market with near flawless linearity, lowest THD and highest SNR of any NOS Dac. The sound is simply something you must experience to fully realize how special this dac is. It’s a patented technology exclusive to HoloAudio.

Spring

Product Description:
This new DAC.”Spring” is the first design of a new era, a milestone for HOLO Audio’s own Jeff Zhu. It’s a full discrete R2R type of audio decoder and does not have off the shelf-DAC chip! This is a bespoke custom-designed core DAC module and truly a breakthrough with technology for any DAC chip today. The Spring is here to achieve new heights, new dynamics and simply a full spectrum of audio to please the aural senses.

Here at Kitsune, we have three versions of the Spring DAC. Other places ONLY offer two models. Below are the three models:

HOLO Spring base model – LEVEL 1
(The base model is quite good all by itself and priced so competitively it’s impossible to beat the performance/price ratio.)

HOLO Spring “Rise Ji Edition” – LEVEL 2
(with 4 Jensen 4700uF / 63V added for ultimate power filtration and improved sound quality –  For sound effects are more relaxed, transparent and details are more apparent. This is the most popular version that sell’s most often.)

HOLO Spring “Kitsune Tuned Edition” – LEVEL 3 and exclusive to Kitsune.
We offer a transformer upgrade to the highest grade available. The O-core 100VA red label is replaced with a 100VA O-Core green label. Price is significantly more due to the OCC Silver Primary and OCC silver secondary wire used in this transformer. The sound improvement is not subtle, it’s a night and day improvement in our opinion and many of our customers agree. Kitsune has tuned this Spring DAC. We are very proud to offer this Model that is installed from the factory who manufactures the transformers for HOLO Audio. This transformer is our finest available model and makes the Spring’s sound quite elegant and improved detail.
Kitsune HiFi Pure Silver Transformer
Kitsune’s Pure Silver O-Type Transformer

DSD is natively supported for the first time on this R2R Discrete DAC
HOLO Audio is the world’s first to support DSD natively on R2R DAC, so far the only one. This is not the DSD converted to PCM before digital-analog converter, but directly by the discrete components of the DSD digital to analog converter. Supported currently on MAC and Linux, and soon to be Windows/PC. Evaluation driver for native DSD512/256 here

Spring’s input and output interface:

  • Digital input interface includes
  • USB (ground isolation)
  • RCA coaxial
  • BNC coaxial
  • AES
  • optical fiber
  • I2S (HDMI)
  • All digital input interface supports DSD (DOP mode).
  • Analog Output interface: single-ended,  balanced.
Spring DAC R2R structure and design
Modern and popular delta-sigma type DAC differs from R2R within one clock analog value can recover a sampling point, and the delta-sigma is used to represent an analog signal after passing through oversampling and high-speed digital switching 0 and 1 . In comparison, the conversion structure of R2R is most direct and pure, but delta-sigma is essentially a digital chip, high-speed digital signals 0 and 1 switch to the low-pass filter to process the analog signal and this process is prone to various problems, produce digital sound (digititus) and also in the super-sampling process will inevitably cause some ringing and distortion. But DAC R2R structure requires high-precision resistor network which the cost can be very expensive. And the digital delta-sigma DAC chip in comparison is very low cost. Patented R2R technology. This is the first discrete dac that has Linear compensation and this allows for ultimate music reproduction accuracy. Dual R2R network for PCM, and Dual R2R network for DSD!
With diverse and flexible sampling mode conversion mode
1: NOS mode , no digital oversampling, the raw data is directly converted to analog.  Because digital oversampling will produce time-domain distortions such as ringing, so NOS avoid these problems. Generally NOS mode other performance indicators have a significant impact, but the Spring is designed to allow top performance while in NOS mode.
2: OS mode , the PCM super-sampled PCM higher frequency, the DSD DSD super-sampling to higher frequency, then digital to analog converter.
3: OS PCM mode , enter either PCM or DSD input, all the way to the PCM oversampling analog to digital conversion.
4: OS DSD mode , enter either PCM or DSD input over all sampled DSD approach to digital to analog converter.
What are the Spring’s sound characteristics?:
One of the strong points of the spring is the spatial sounds stage presentation. It’s very wide and precise. Never does it sound congested list many DACs. The high end is very detailed and never harsh sounding. It has the R2R goodness that many have come to know and love. R2R has almost a cult like following and this DAC will surely become a sought after DAC.  Everything comes effortlessly for this DAC. Bass is layered and textures, quite full and present without ever masking over the sweet mid tones that are produced. One special thing about the Spring is it’s amazing voltage regulation circuitry that has no more than .2uV noise! This along with the O-core transformer helps regulated the purest power which translates to audio clarity and accurate reproduction. I would say this Spring DAC is better than just about any DAC I’ve ever heard which is saying a lot! Must hear it to appreciate and come to love it’s sound. The Green Label transformer is a step up that brings a new level of clarity not even thought possible. The Red Label already sounds incredible, but if you must have the best and nothing compromised then I would suggest adding the Green Label.

A little note from Jeff:

Many have asked about how does a discrete resistor network accurately reproduce sound. This email is a good read for those who want a technical explanation on how Jeff was capable of achieving flawless linearity and ultra good specs on THD. This was a reply to a customer who had a technical question about resistors and their limitations.

“About the resistor tolerance, his word is partly right, but not accurate. The MSB of 16bits value only represent 32768, not 65536, all 16bits is 65535, but the MSB is only 32768. There are techniques to reduce this requirement. For example, segment+R2R, using segment into the first few bits, then r2r for the rest of them. Rockna is segment+R2R, TotalDAC is all R2R. And you can see, Rockna’s THD spec. is much better than Total. Total uses foil resistor, but they used the simplest architecture. That results an unsatisfied test performance. To my opinion, it’s some kind of wasting foil resistors. Soekris also uses segment+R2R. MSB’s old model is all R2R, but I don’t know about their new models.

Anyway, There are ways to improve the performance, the segment+R2R is one way. Trimming is another way. There is an additional R2R ladder in Spring, it compensate the main R2R ladder. It works like trimming, but trimming is to change the resistor value. This additional R2R ladder are digital controlled and is to compensate the resistor tolerance. For example, the msb of 16 bits should have the value of 32768, but due to tolerance, it represent 32700 in real world. Then that additional R2R ladder will compensate 68 into it. Then it became 32700+68=32768.

Actually there are other ways to improve performance, I just told you two stories. There are more stories behind the design. It is really hard. I must count every via holes in layout, every PCB wire has it’s impedance and must put attention on it. A via hole can be 50 m Ohm, it is 1/20000 of 1K ohm, and you see, it covers 32768 which is the msb of 16bits. Also the switches has self-impedance which is about several ohms to 30 ohms. If you find this issue. Maybe you will go crazy, it seems to be an impossible mission. But a good designer will overcome all these problems. It’s our value at HOLO Audio.

All the resistor tolerance, switch impedance, line impedance, via hole impedance, finally reflect as linearity. There is a chart that shows Spring’s linearity, it’s excellent. But I suggest you to look at THD performance. Bad linearity must result a bad THD performance. But good linearity doesn’t mean there will be good THD performance. THD is dynamic performance, more critical than linearity which is a static performance.

If you look at the THD performance, you will find Spring to maybe the best among those competitors. I’m applying a patent which contribute a lot of that performance. But I can’t tell you how. It’s confidential now.

Best Regards

Jeff Zhu”

And another note on Linear Compensation. as Some have asked what happens when the Resistors values change over time? Jeff responds:

No matter it is a digital switch or analog switch, they are built by transistors, can be either bjt, mosfet or jfet. They have self-impedance call Ron(impedance when at on state). If we expect a lower Ron, the a bigger transistor is needed. But bigger transistor has bigger self-capacitance that will cause switching speed to be lower. So there is no perfect components in the real world.

About long term drift, the modern resistor technology has made it much better than older process. But the most important thing is, we don’t care absolute drift, we only care relative drift. That means, if all resistors are drifted in the same direction and same speed. Then it will be no impact for this application. So, we make sure to use the same batch of components in a single board. That will minimize the problem causing by long term drift.

As I mentioned in the earlier email. Spring is not using trimming, but using compensation. Not matter it is trimming or compensation, their goal is same, to make the resistance much more accurate so the linearity and distortion can be improved a lot.

Best Regards
Jeff Zhu

Also, another customer asking about the oversampling, Jeff replied and has some good information to those who are curious.

The oversampling is done by AK4137, ‘OS PCM’ converts the input stream to PCM no matter it is PCM or DSD, then send to DAC. ‘OS DSD’ converts the input stream to DSD no matter is is PCM or DSD, then send to DAC. ‘OS’ over-samples the input stream. If it is DSD input, it over-sample to DSD256. If it is PCM input, it over-samples to PCM384K or 352.8K ‘NOS’ does no oversampling. send the input stream directly to DAC module.About DSD ‘native’, it is the way the USB transfer the stream. You know DOP, which is DSD Over PCM. DOP put the DSD into a PCM stream. At the receiver end, it just unpack the PCM stream and get the DSD back. DOP does NOT change any bit of DSD stream, just sending it with the package. So it waste some data rate. At the same data rate, DOP is 1/2 of DSD native, the other 1/2 is the package. So DOP and DSD native are all bit perfect. The DSD stream sending to DAC is all the same.So, now you should know, DSD native is just about the way it transfers the stream. Not describing the way it does digital to analog conversion. At the DAC stage, the DSD stream can convert to PCM then do the final digital to analog conversion. Actually, most DAC chips do this inside the chip. One point needs to be remembered, DSD streams can’t do volume attenuation. If this chip can do digital volume control under DSD mode, then is must converted to PCM already.Let’s go back to Spring. If Spring works in ‘NOS’ mode. There is no
oversampling, no conversion, just the original data doing the final digital
to analog conversion. I will not explain how it does PCM conversion, you
should already know quite well about it. There is a lot of resistor ladder
DAC, they are born to do this. I just explain how Spring can do ‘discrete
DSD conversion’. Actually it is like DCS and CHORD. If you looking to DCS
and CHORD’s PCB, you will find ‘discrete DSD conversion’ is also using
switches and precision resistors, like resistor ladder DACs. So, no matter
it is ‘discrete DSD conversion’ or ‘discrete PCM conversion’, they all use
the same discrete devices. Just work in different architecture. That makes
possible to combine these two modes in one device.

Best Regards
Jeff Zhu


Measurements –

Please take a closer look by clicking on the image to open in new window. Take note of the Linearity of this dac. And also take note of the THD level’s being ultra low along with the Signal to Noise Ratio being better than average in general, but remember this is a NOS Dac so it’s actually extremely good and definitely one of the best NOS dac on the market today! 

  • NOS FFT SPECTRUM


Here are some more photos that also explain some details 

  • Base Model Power Capacitors


 

This photo shows squarewave NOS vs. Oversampling.
Spring4

spring5
Linearity
spring9
SNR
spring7
THD @ 1K @ NOS
spring6
THD @ 1K @ DSD
spring10
THD + N @ 5K @ NOS (0.00068%)
spring8
THD+N@5K@DSD(0.00050%)
spring12
NOS FFT SPECTRUM
spring11
DSD FFT SPECTRUM
146435793342031
Red Label O-Core 100VA
Holo Spring Photos
Base Model Power Caps
IMG_0930
Red Label Transfomers
IMG_0932
“Rise Ji Edition” w/ red label Transfomer
IMG_0934
Jensen Caps 4700uF 63V
IMG_0880
“Rise Ji Edition+” w/ green label silver transfomer
146435793342544
Beauty of discrete R2R
146435793341505
Spring Logo
211510gpff5uaz3sf3ilo3
take notice of custom HOLO IC’s.
211513waalz16162xxxavr
R2R
A small sealed transformer is ONLY used for standby power. The spring dac was designed to be POWER EFFICIENT
211506fpmz69pp53jx3gay
no off the shelf USB modules, this one is HOLO audio brand.
IMG_0933
R2R

 

 

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Singxer arrives at KitsuneHIFI.com!

Singxer logo
Singxer

We now have a working relationship with SingXer (http://www.singxer.com/) from Guangzhou China. We will be carrying several of their products to offer as a local distributor in the USA. Curently we are choosing to offer the Singxer SU-1 and the F1 usb module.  We feel these are the best USB options on the market today and proudly will offer these to you at competitive pricing!

A little bit about SingXer:

Sound Electronics Co., Ltd. Guangzhou Shi current office located in a beautiful Panyu District, Guangzhou City. Shi electronic sound team was founded in 2011 , by several team members have many years of experience in the development of audio products, product managers and senior engineers.Since the team was established, within the audio industry to undertake a number of technical development projects, the development team has been the outcome of customer satisfaction and recognition.

The company develops high-performance audio products, audio products can undertake OEM, ODM projects. We have a strong development capability in terms of XMOS Audio, pioneered the development of the second generation XMOS xCORE-200 series processors, XMOS Audio optimized many of the underlying firmware. Meanwhile, in the above hardware architecture, there are some technical points independent development. Including the independent development of the system clock, independent development of digital phase-locked loop technology “SHDPLL”, I2S shaping, full isolation technology and so on.

 

and info on the products we carry from Singxer.

Singxer’s list of distributors – you’ll find KitsuneHiFi as the ONLY USA distributor.

SU-1

SingXer F1
_-1_40 _-2_33 _-3_25 _-4_21

 

 

 

 

 

SingXer SU-1

(please note the silver model is new and to be released soon, we will carry a very limited amount of this color, please email us to ask about ordering this color)

Product Details

 SU-1 digital interface is Singxer team developed a high-performance USB digital audio interface, using the latest XMOS family and Xilinx high-performance CPLD / FPGA chip. SU-1 is the rare use femtosecond system clock digital interface, Crystek of two CCHD-957 SU-1 crystal is the ultimate output audio signal quality has laid a solid foundation. SU-1 digital input interface using a standard USB2.0 interface. SU-1 has a wealth of output interfaces, including coaxial RCA and BNC output S / PDIF, XLR balanced outputs AES / EBU, HDMI output IIS (including DSD ON and MUTE signals) and BNC WCLK word clock output.

SU-1 is the first machine we have developed equipment that is positioned in the high-end interface, is used mainly in the following three main technologies:

1, full isolation technology (ground isolation), the use of 150Mbps full-chip isolation, interference can be completely isolated from the PC;

2, source synchronous shaping technology and CPLD technology, I2S signal isolation after the re-shaping; thus eliminating the isolation chip to bring added jitter;

3, the independent development of the system clock, using CRYSTEK high-performance oscillator, low phase noise and low jitter.

Features:

1, SU-1 is the first using the XMOS latest xCORE-200 series of high-end USB digital interface products. New generation XMOS chip, using more advanced process technology, performance than the older U8 chip doubled, reaching 1000MIPS processing capabilities.

2 , it is known, the weight of the core is digital audio algorithms. Our team in the field of digital audio work for many years, at the same time get XMOS FAE support team, we conducted a number of technical improvements and optimization algorithms on the basis of the original firmware.

Specifications:

Each output interface supports sample rates:

PCM: 44.1KHz,48KHz,88.2KHz,96KHz,

176.4kHz, 192KHz, 352.8KHz, 384kHz

[ Wherein I2S out support full sample rate , S / PDIF supports up to 192KHz]

DSD: 2.8 MHz (DSD64)   –  DoP,native

5.6 MHz (DSD128)  –  DoP,native

11.2 MHz (DSD256) –  DoP,native

[ Wherein I2S out support all DSD format , S / PDIF and AES / EBU support DSD64 DOP mode ]

位宽:最高32 bit over I2S output

最高24 bit over S/PDIF

Each interface electrical standards:

1 , the USB input socket is a standard USB-B type female, the USB power supply range 4.5V-5.1V ;

2 , the RCA connector outputs standard S / PDIF signal level is 550mV ( access standard load ), the output impedance of 75 ohms;

3, the power input is 220V AC, internal use RS importing adapter for power.

Design details:

1 , carry out electricity as the mother of the acoustic design concept, pay attention to the power supply circuit design, high-performance, low noise and fast response of the LDO as the main power source. The entire board using multiple independent path LDO power supply, wherein the clock even partially adopted ADI ‘s ultra low noise LDO , in order to ensure the ultimate output performance laid a solid foundation.

2 , the PCB motherboard with 4 -layer circuit board design, ensure that you have full power and ground plane layer, using the method of high-speed digital design, signal integrity and power integrity of the entire board. The clock signal for special treatment, using package design and precise impedance control, thereby ensuring the signal quality and increase the clock anti-jamming capability. Input and output signals follow a standard design, especially USB high speed signals using a 90 ohm differential impedance control.

System Compatibility:

1, Windows XP, Windows 7, Windows 8; 32/64 bit, you need to install special drivers

2, Native MacOS 10.6 and later, using the system comes with drivers

3, Native Linux with UAC2 compliant kernel, using the system comes with drivers

4, Android OS 4.2 and above, the need to support OTG function.

I2S interface with HDMI output socket:

1. The level of 3.3V for the LVDS differential signals;

2. The output signal is muted, DSD ON signal, 5V power supply (low current);

3. The output signal mute, DSD ON signal can be modified according to customer needs, internal CPLD can define different output pins; the two signals can be output to any socket PIN13,14,15,16 pins.

 

and the F1

SingXer F1

SingXer F1

Product Details

     F-1 digital interface module, the whole network starting. The first use of the second generation XMOS chip developed high-XU208 USB interface, support firmware upgrade. Self-developed schematics and firmware (including XMOS and CPLD), non-reference design.

F-1 The reason why high-end positioning, primarily using three black & TECHNOLOGYSurgery:

1, full isolation technology, 150Mbps full-chip isolation, interference can be completely isolated from the PC;

2, source synchronous shaping technology and CPLD technology, I2S signal isolation after the re-shaping; thus eliminating the isolation chip to bring added jitter;

3, the independent development of the system clock, using femtosecond CRYSTEK custom clock, ultra-low phase noise, low jitter.

Product Description:

F-1 digital interface of our team to develop a high-performance USB digital audio interface, using the XMOS latest xCORE-200 series chips. F-1 is the rare use of ultra- low-jitter femtosecond clock digital system interface. F-1 digital interface using standard USB2.0 input interface, while F-1 has a wealth of output interfaces, including coaxial RCA and I2S interfaces.

Features:

1, F-1 is the first using the XMOS latest xCORE-200 series of high-end USB digital interface products.New generation XMOS chip, using more advanced process technology, performance than the older U8 chip doubled, reaching 1000MIPS processing capabilities.

2 , it is known, the weight of the core is digital audio algorithms. Our team in the field of digital audio work for many years, at the same time get XMOS FAE support team, we conducted a number of technical improvements and optimization algorithms on the basis of the original firmware.

Specifications:

Each output interface supports sample rates:

PCM:44.1KHz,48KHz,88.2KHz,96KHz,

176.4kHz, 192KHz, 352.8KHz, 384kHz

[ Wherein I2S out support full sample rate , S / PDIF supports up to 192KHz]

DSD:2.8 MHz (DSD64) – DoP, native

5.6 MHz (DSD128) – DoP, native

11.2 MHz (DSD256) – DoP,native

[ Wherein I2S out support all DSD format , S / PDIF and AES / EBU support DSD64 DOP mode ]

位宽:最高32 bit over I2S output

最高24 bit over S/PDIF

Screw position, I2S pin position is fully compatible with Italy Amanero module

The entire board with three crystal design, all are imported SMD crystal using active crystal. Wherein the audio

Crystal is CRYSTEK CCHD series customized version of the crystal.

Each interface electrical standards:

1 , the USB input socket is a standard USB-B type female, the USB power supply range 4.5V-5.1V ;

2 , the RCA connector outputs standard S / PDIF signal level is 550mV ( access standard load ), the output impedance of 75 ohms;

Design details:

1 , carry out electricity as the mother of the acoustic design concept, pay attention to the power supply circuit design, high-performance, low noise and fast response of the LDO as the main power source. The entire board using 2 independent way of LDO power supply, wherein the clock even partially adopted ADI ‘s ultra low noise LDO , in order to ensure the ultimate output performance laid a solid foundation.

2 , the PCB motherboard with 4 -layer circuit board design, ensure that you have full power and ground plane layer, using the method of high-speed digital design, signal integrity and power integrity of the entire board. The clock signal for special treatment, using package design and precise impedance control, thereby ensuring the signal quality and increase the clock anti-jamming capability. Input and output signals follow a standard design, especially USB high speed signals using a 90 ohm differential impedance control.

System Compatibility:

1, Windows XP, Windows 7, Windows 8; 32/64 bit, you need to install special drivers

2, Native MacOS 10.6 and later, using the system comes with drivers

3, Native Linux with UAC2 compliant kernel, using the system comes with drivers

4, Android OS 4.2 and above, the need to support OTG function.