Holo Audio Serene Pre-Amplifier - Rapallo | AV Design & Installation
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Holo Audio Serene Pre-Amplifier

$4,899.00 inc GST

or from $3,399.00 today & 5 weekly interest-free payments of $300.00 with Laybuy what's this?

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.


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.


Serene L1(Standard) and L2(KTE):

Standard Model includes:

  • 7N copper, round wire O-type transformer, which was used in the Spring 2 (non-KTE)
  • Standard copper hook-up wire
  • Schurter Gold Fuse, same fuse used in Spring 2/May (non-KTE)
  • Standard capacitors / HoloAudio, audio grade capacitors
  • CNC Aluminum Remote Control


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



Analog Input
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
Analog Output
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) Maximum amplitude 17Vrms
Output impedance 3Ω
Balanced XLR output 2 Maximum amplitude 17Vrms
Output impedance 40Ω
 Physical Characteristics
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


Additional information

Weight 9 kg
Dimensions 30 × 43 × 5.5 cm

Holo Audio

Why buy from us?

Rapallo is an independently owned New Zealand company and with more than 15 years experience, we offer you both technical expertise and superior service.

Rapallo is fully authorized to sell products by all of the manufacturers listed on our website and in our store. In most cases we are more than a reseller, we are a direct dealer who also receives training and where possible we personally test products we sell.


Authorized dealers like us offer peace of mind. Rapallo

  • meets manufacturer’s standards, from sales to service, in order to receive authorized status.
  • often receives training directly from manufacturer representatives and shares that expertise with you.
  • provides  support for all the products they sell.
  • ensures that manufacturer warranties will be honoured.
  • buys directly from big brand manufacturers and guarantee you buy NZ new, (no grey imports or parallel imports).

The Internet is an incredibly convenient information source and a wonderful way to find savings on the products you want. Protect yourself online by buying from authorized dealers, with genuine feedback and reputations.


A price too good to be true, usually is.
If you’ve ever searched for a product on a shopping engine (such as Priceme/Pricespy) you may have asked yourself, “Why are some stores charging so much less than other stores?”

Our customers often share these stories with us, so we thought we would share a few with you, in hopes that you don’t fall prey to any of these unscrupulous sales tactics.

  • Goods may be grey market/parallel imported. They may state that the product includes the manufacturer warranty, but not tell you that the warranty is valid only in Europe, Japan, or South America, and NOT in NZ.
  • You may be asked to buy an expensive extended warranty. In many cases if you do not purchase the warranty, your purchase will be denied. (The product is now out of stock, your card does not go through, etc.)
  • Included parts may be sold to you separately. Some resellers will open boxes and charge extra for parts that are normally included by the manufacturer.
  • Hidden charges which don’t show up until your credit card statement arrives, these charges only show up when your credit card statement is sent to you.
  • When something goes wrong, faulty, late delivery, doesn’t matter how many times you try to email, they don’t get back.
  • There are so many scamming online sellers today, “buyer beware” protect yourself!


Think you have a better price from someone in NZ (authorised dealer)? Call us, we’ll see what we can do.


Concerned About Fraud?
The internet has become a more popular source for online shopping, regrettably we have seen more and more instances of fraud affecting online shoppers. Companies trading under many  different names, loading warranties and charging for them as extras when often they are included from the manufacturer. Parallel imports or personal imports where the NZ supplier refuses to repair when things go wrong is often alarming to the unsuspecting purchaser. Inflated freight charges, customs and GST at the border are often forgotten as a buyer is tempted by a lower price. Constantly we hear all these stories, once bitten it’s all to late looking for that refund or replacement. The stories are outrageous at times, customers from Trademe and ebay with no place to turn, time consuming and very frustrating…


So how do you protect yourself from online fraud?

  • Buy from an authorized reseller. If you are at all suspicious, contact the manufacturer directly and ask if a company is authorized to sell their products.
  • Make sure you get a company invoice with GST clearly marked.
  • Make sure you buy from someone who has a phone number and an address on their website, not a P.O.Box number
  • Read customer feedback, you can usually tell if it’s genuine or not.

We hope that you will become our next happy customer. And we promise to offer you superior service before, during and after your purchase.

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Customer support is very important to us. Deano, Bensan or Simon are on-hand for you via Phone, Online Chat, Email and Social Media. We're here to help, no matter if the question is big, or small!


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