HoloAudio – Serene Pre-Amplifier

$3,328.00

Serene is a preamplifier from HoloAudio. Serene adopts a fully balanced structure. The left and right channels are completely separated to form a fully balanced structure. Each channel has independent amplification modules to complete the buffering and amplification functions.

This design is able to solve the shortcomings of transistors, so that its tone can exceed the limits of traditional transistors. It also has both the advantages of tubes and transistors. And the use of a large number of transistors makes the linearity of the amplifier superior in every way. The volume control of the Serene is a fully balanced stepping device controlled by a relay. Each step is 1 dB volume. The advantage is that the noise is minimal, and it can be precisely controlled, even at a low volume the left and right channel will not be biased.

Holo audio caps and a 7N O-type transformer as well as CNC Remote Control are included in the base model.

Version: KTE Serene

KTE Serene Model includes:

Flat copper wire O-type transformer which was also used in the Holo Audio May DAC.
Pure silver wire from IEC to power board w/Silver Rhodium plated Faston connectors
Red nano fuse we used in the HOLO Audio May KTE
Holo audio caps and a 7N O-type transformer
4pcs 5uF/350V Bi-polarized AudioNote Kaisei capacitors
CNC Aluminum Remote Control
KTE emblem on top of chassis

Estimated Time Before Shipping:

Estimate time before shipping: These will ship directly from the US - estimated shipping time is 3-10 days.

Quantity:

HoloAudio – Serene Pre-Amplifier

$3,328.00

Description

A new generation of fully discrete preamplifiers.

The Serene “晴” adopts a true and fully-balanced design from end to end, with 4 sets of channels, left and right channels each form a fully-discrete design, each channel has two fully-discrete and separate amplification modules to complete buffering and amplification (attenuation) functions. For a total of 8 amplification modules.

The 8 amplification modules of Serene “晴” are of a fully discrete design. The shortcomings of the transistor itself are solved through structural design and implementation. Its tone can exceed the limitations of traditional transistors. Using significant amounts of paired transistors delivers superior linearity and also has the advantages of electron tubes and transistors at the same time. Its tone can exceed the limitations of traditional

Serene’s “晴” power supply is a completely independent structure from the secondary transformer. This is a dual mono amplifier placed in a chassis, so it has a full frequency >130dB performance of channel separation, so that the sound field is perfectly reproduced.

Serene “晴” volume control is a fully balanced stepping device controlled by relay-controlled gain stage. Relays are the finest quality with Silver Palladium (AgPd) Gold Plated contacts. For a total of 84 steps, each step is 1db volume, and provides a volume control from -78dB to +6dB. Its advantage is that it has ultra low noise and can be accurately controlled at low volume without causing the phenomenon of left and right channels having unmatched levels. The matching degree of left and right channels in all volume ranges are within +/-0.1dB.

KPure silver wire from IEC to power board w/Silver Rhodium plated Faston connectors (KTE model)

Bi-polarized AudioNote Kaisei capacitors. Mundorf Mcap Evo SIlverGold, Nichicon Muse, Elna Silmic II, HoloAudio 1uF caps (KTE model)

Specifications

Single-ended RCA input (QTY 3)

Maximum amplitude 12Vpp

Input impedance 6.8KΩ

Balanced XLR input (QTY 2)

Maximum amplitude 24Vpp

Input impedance 13.6KΩ

Single-ended RCA output

Maximum amplitude 8.5Vrms

Output impedance 20Ω

Balanced XLR output 1 (this can actually be used to power headphones from this output using adapter that is dual 3pin F XLR to single 4pin F XLR)

Output impedance 3Ω

Balanced XLR output 2

Maximum amplitude 17Vrms

Output impedance 40Ω

Size

430x300x55mm / 16.93×11.81×2.17inches (W x L x H, Dimensions do not include protruding parts）

Weight

9kg/19.84lbs

Power Input (configurable, see label on bottom of unit for specified input）

220-230V 50/60Hz – Fuse Type 2A SB 5x20mm

110-115V 50/60Hz – Fuse Type 4A SB 5x20mm

Power consumption

30W

Warranty

3 years warranty, both parts and labor, coverage of one way shipping (return shipping at cost to seller once product is confirmed as a warranty claim issue). Be sure to buy directly from HoloAudio or authorized reseller, we recommend purchasing from HoloAudioUSA<– this is KitsuneHiFi 😉 – Support is given from where you choose to purchase.

Manual Download

Download

Additional Info

Info on Red Nano Fuse type used

Single crystal nano fuse

Specification: 5X20mm @2A(220v) or 4A(110v)

Withstand voltage: 250V (T) slow speed

Features: This product has a complicated process, special materials can not be mass produced so this fuse is 100% pure handmade!This fuse cost is high due to the materials and labor.

The structure is crimped, the contacts are firm and reliable, plated 24K gold, non-chemical process gold plating. The fuse is made of imported single crystal silver-copper alloy.

After nano-processing, note that the fuse is directional after nano-processing. The inner filling of the quartz sand is filled with nano-graphite, and the graphite has ultra-high conductivity and high anti-interference characteristics.

The sound is beautiful, soothing and layering is superb. This is the fuse we use in our flagship products.

The fuse is filled with 2 grades of quartz sand for good shock absorption and arc prevention/elimination. In the middle is graphene, which has the advantages of ultra-high conductivity and anti-interference.

The fuse is a single crystal silver-copper alloy containing 10% precious metal, treated with nanographene, and stranded with single crystal silver.The fuse cap is stamped from 99.99% 4N copper, one end is plated with 24K gold and one end is plated with sterling silver.

Increasing the conductivity and the speed of the power supply make the fuse and the socket highly accessible.The fuse is firmly pressed with two caps made of 4N copper. This process protects the fuse in the middle of the fuse. The fuse and the cap are in good contact with the ceramic tube. This process will reduce the oscillation of current passing.

The ceramic tube has anti-resonance and eliminates the effect of the microphone sound.The fuse is made of a single crystal silver-copper alloy, and a very fine single crystal silver wire is wound to correct the sound.Tip: Input in different directions, the tone is different. You can try different directions.

Single crystal nano fuse

Specification: 5X20mm @2A(220v) or 4A(110v)

Withstand voltage: 250V (T) slow speed

Features: This product has a complicated process, special materials can not be mass produced so this fuse is 100% pure handmade!This fuse cost is high due to the materials and labor.

The structure is crimped, the contacts are firm and reliable, plated 24K gold, non-chemical process gold plating. The fuse is made of imported single crystal silver-copper alloy.

The sound is beautiful, soothing and layering is superb. This is the fuse we use in our flagship products.

HoloAudio – Serene Pre-Amplifier

Estimated Time Before Shipping:

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