Holo Audio Azure Fully Discrete Pre/Headphone Amplifier - Rapallo
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Holo Audio Azure Fully Discrete Pre/Headphone Amplifier

$2,799.00 inc GST

or from $1,299.00 today & 5 weekly interest-free payments of $300.00 with Laybuy what's this?

The core of the “Azure” is eight fully discrete amplification modules.

The eight amplification modules form four channels, two channels for each of the left and right channels, thus forming a fully balanced structure. In each channel, one amplification module is responsible for signal buffering and volume control, and the other is responsible for signal amplification.


Design of Amplification Module 
Its commonly known that the solid state equipment and the tube equipment ​​have their own characteristics. The advantages of the solid state machines are relatively balanced and full of details, and the advantages of the tube amplifier are more relaxed and rich timbre. There are many speculations why there is such a difference, but there is no proven results. A lot of time was invested in the research, to link design with the reasons for the formation of a sense of hearing. In the end, some key points have been found, and the amplification module is a new design based on these findings.

Generally speaking, most of the discrete amplifiers on the market are simple in structure, and their tested performance is not superior.

There are two reasons:

  1. First of all, to achieve high performance, you must have a complicated structure. Then the problem comes, the complicated structure is very difficult to control. For the amplifier, an ignorance of certain details will destroy the rest of the effort, and even a slightly longer route will lead to self-induced shock. Therefore, it is a considerable challenge to be able to master all the details of a complex amplifier without introducing problems and mistakes. In the process of developing this amplifier, there were more than ten versions of design, and slowly modify the structure and fine-tune the details to form the final design.
  2. In addition, the complicated structure of the amplifier means higher cost, and the material cost is only one aspect. Since the transistors in the amplifier need to be precisely matched, the labor cost is also very high if the pairing is performed manually. The Azure’s amplification module uses a considerable number of “twin transistors”, which solves the labor cost of pairing. Of course, due to the relatively expensive “Twin transistors”, the material cost is further increased. But considering that the twins are innately matched, it is much better than the pairing afterwards.


Volume Control 
The volume control of “Azure” is the step potentiometer controlled by the relay, 64 steps, each step is 1db. The advantage is that high-precision fixed resistors can be used, which is much better than the carbon film resistance of ALPS. It will not be biased to one channel at small volume. This step potentiometer has four channels and forms a fully balanced structure. Another advantage is that it can be remotely controlled.


Headphone Amplifier Output 
The headphone amplifier output can be set to high-impedance output and low-impedance output, so that when driving high-impedance headphones and low-impedance headphones, they can be optimizaed accordingly, which achieves very good compatibility and can be used almost with any headphones on the market.


Pre Amplifier 
The preamplifier part of the Azure inherits the fine tradition of its predecessors, the “Mammoths”. This is not headphone amplfier with a pre amplifier, nor is it a pre amplifier with a headphone amplifier. It has the quality to be used as a stand alone pre amplifier.


Analogue Inputs:
* Single Ended Input x 1
– Maximum Input 12Vpp
– Input Impedance 3.9k Ohms
* Balanced Input x 1
– Maximum Input 24Vpp
– Input Impedance 7.8k Ohms
Analogue Outputs:
* Single Ended Line Output x 1
– Maximum Output 16Vpp
– Output Impedance 33 Ohms
* Balanced Line Output x 1
– Maximum Output 32Vpp
– Output Impedance 66 Ohms
* Single Ended Headphone Output x 1
– Low Impedance Mode 400mW@32 Ohm Load
– High Impedance Mode 180mW@300 Ohm Load
* Balanced Headphone Output x 1
– Low Impedance Mode 1600mW@32 Ohm Load
– High Impedance Mode 720mW@300 Ohm Load

Additional information

Weight 5 kg
Dimensions 28.1 × 26 × 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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Covid-19 Lvl 4 Update 😷

We are OPEN online & processing sales/orders daily with our contactless warehouse staff.

Our team are available via phone or email for sales enquiries, advice or assistance between 9am & 5pm weekdays.

Hopefully we are back in the office soon (fingers crossed).

Stay safe everyone.

thanks, the team @ Rapallo
Deano / Bensan / Simon