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Peachtree Audio GaN400 - Power Amplifier


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Colour: Ash

  • Ash
  • Gloss Mocha
  • Black Piano
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The Peachtree GaN400 represents a next step in the evolution of power amplifier design and manufacturing. It has exceptionally accurate waveform reproduction, amazing power and control, low global negative feedback and extremely efficient use of AC power. It provides the highest level of musicality without sacrificing the remarkable efficiency of a class-D design, and is proudly assembled in the USA.

The GaN400 is simply the best sounding power amplifier that Peachtree have ever made and compares favorably to the world's best power amplifiers regardless of their topology.

Peachtree Audio GaN400 - Product Features

  • State-of-the-art GaNFETs (Gallium Nitride Field-Effect Transistors)
  • 400 watts per channel
  • Musical. Powerful.
  • Drive ANY speaker with ease and headroom to spare
  • Compatible with speakers from 2.5Ω to 16Ω nominal impedance
  • Balanced and unbalanced inputs with differential audio circuits
  • Aluminum front panel and chassis wrapped in a real wood cabinet finished in stunning Gloss Ebony Mocha or beautiful Piano Black
  • Limited Edition Ash finish available

The Peachtree GaN400 is a “class-D” stereo power amplifier that utilises GaNFETs (Gallium Nitride Field-Effect Transistors). Integrated with an 850-watt RMS regulated power supply, a fully balanced topology and a low global negative feedback design. This delivers an astounding 400 watts-per-channel while achieving sound quality that is remarkably faithful to the input signal.

The GaN400 has balanced and unbalanced audio inputs, a trigger input, and is compatible with speakers that have nominal impedances from 2.5Ω to 16Ω. It drives virtually any speakers, including low sensitivity (“less efficient”) speakers with the utmost ease and authority. All the while delivering a level of musicality and transparency that is extremely rare, especially in high output power amplifiers.

What is GaN?

MOSFETs (Metal Oxide Semiconductor Field-Effect Transistors) significance in the electronics industry and the other industries that rely on them can’t be understated. However, over the years, the rate of MOSFET improvements leveled off as the performance got closer and closer to the theoretical limits of the materials and processes. The need for something better grew. Enter GaN.

GaNFETs (Gallium Nitride Field-Effect Transistors) started to gain attention over the last decade as audio engineers and designers realised that they were suitable for high frequency, high voltage, high temperature and high efficiency applications. This was noticed especially when compared to their MOSFET counterparts.

GaNFETs turned-on x4 times faster and turned-off x2 times faster reducing switching distortion (ringing) by several orders of magnitude. This, in-turn, allowed designers to use much less global negative feedback to achieve excellent measured results. The result is an amplifier with exceptional musicality and excellent measured performance.

In other words, an amplifier that provides wonderfully natural sounding music reproduction like the best tube amplifiers. However, retains the tight bass, extended frequency response and sheer dynamics of the best solid- state amplifiers. It really is the best of both worlds and all of this is accomplished in an amplifier that is also one of the most efficient designs in the market today. The amplifier converts ~96% of the electricity from the wall into usable power.

The Importance of the Power Supply

Every power amplifier is dependent on its power supply to provide the power reserves necessary to drive the loudspeakers at any volume level. The GaN400 is no different and it utilises an impressive 850-watt RMS regulated power supply. This supplies the output modules with all the clean power they will ever need - even when things get really loud. The power supply uses the best parts available to ensure high performance, durability and long-term reliability.

Connectivity and Convenience

Balanced and unbalanced inputs assure you of maximum low-noise performance and compatibility with any preamp. The GaN400's 100K input impedance means you can use the preamplifier of your choice - regardless of its technology - with assurance that it will not be compromised. The GaN400's remote trigger lets you conveniently power the amplifier on and off with one command.


You'll never have to worry about the GaN400 matching up with your speakers. It has the power to recreate the dynamics of any recording with virtually any loudspeaker made. Nominal load impedances from 2.5-16 ohms are handled easily. Sit back, let the GaN400 power your speakers and ENJOY THE MUSIC!

Technical Specifications

  • Compatible Speakers: 2.5 - 16 Ohm
  • Output Power: 400w, into either 8 or 4 Ohms
  • Dynamic Range (A-Weighted): >112dB
  • Damping Factor (1kHz): >245 (8 Ohms)
  • Frequency Response (20 - 20kHz): <+/- 0.4dB
  • Inter-Modulation Distortion (SMPTE): >80dB below fundamental
  • Total Harmonic Distortion (AES17, 1kHz, 8 Ohm): 0.004 %
  • Channel Separation (1kHz, 8 Ohm): >90dB
  • Balanced Input Impendance: 100K ohm (across pins 2-3)
  • Unbalanced Input Impedance: 100K Ohm
  • AC Power: 100 - 240v / 50/60 Hz
  • Fuse Size for 230v: 5 amp 250v slow-blow
  • Standby Power Consumption: <0.5 W
  • Idle Power Consumption: 32W
  • Max Power Consumption: 1000 W (Peak)

Product Dimensions

  • Height (Including Feet): 111 mm | 4.37 Inches
  • Width: 356 mm | 14.02 Inches
  • Depth (including power button and binding post): 343 mm | 13.50 Inches
  • Weight: Unit Only 6.917 kg

Further Information

Peachtree GaN400 - User Manual


We offer Free Delivery on orders to the UK Mainland over £100.


Our staff are passionate about what they do and can provide advice and assistance on your purchase.


You can return any unwanted and unused item within 30 days and get a full refund.


Orders can be placed on our fully SSL-secured checkout with Debit / Credit Cards or via PayPal, Apple Pay and Google Pay. 

The products we use and sell are of the highest quality and we trust them wholeheartedly, but every now and again a product has a fault that is covered under the manufacturers warranty.

In the event of such an occurance please contact us via email at to proceed with the warranty process.

Below is a list of all the Manufacturers warranty timeframes with any special instructions for extended warranties:


  • 1 Year Standard Manufacturers Warranty


  • 5 Years standard Manufacturers Warranty


  • 5 Years with Installation by an Authorised Installer (Studio Incar is an Authorised Installer)
  • 1 Year if you are doing your own Installation
  • 2 Years if you register the product with the UK supplier


  • 2 Years standard Manufacturers warranty


    • 1 Year standard Manufacturers warranty
    • 2 Years if you register the product with the UK supplier


    • 90 Days Standard Manufacturers Warranty
    • 3 Years Extended Warranty - Product Registration within 30 days of Purchase


    • 6 Months standard Manufacturers warranty


    • 1 Year standard Manufacturers warranty

    Chord Company

    • Lifetime Warranty


    • 2 Years on Car Audio Products - No Extendable Warranty
    • 2 Years standard Warranty on Home Audio Products
    • up to 8 Years Extendable Warranty on Home Audio Products when you register at Dynaudio


    • 1 Year Standard Manufacturers Warranty
    • 2 Years Extended Warranty when registered with Focal


    • 2 Years Standard Manufacturers Warranty


    • 1 Year standard Manufacturers warranty
    • 2 Years if you register the product with the UK supplier

    HiFi Rose

    • 2 Years Standard Manufacturers Warranty

    iFi Audio

    • 1 Year Standard Manufacturers Warranty

    JL Audio

    • 1 Year for Speakers and Subwoofers
    • 2 Years for Amplifiers and Processors


    • 3 Years Standard Manufacturers Warranty


    • 1 Year Standard Manufacturers Warranty

    Peachtree Audio

    • 2 Years Standard Manufacturers Warranty
    • 3 Years Extended Warranty if Registered with Peachtree


    • 2 Years Standard Manufacturers Warranty
    • 3 Years Extended Warranty if Registered with Pro-Ject


    • 4 Years for Passive Loudspeakers
    • 1 Year for Active Loudspeakers / Subwoofers
    • 5 Years for Passive Loudspeakers if Registers with Q Acoustics
    • 2 Years for Active Loudspeakers / Subwoofers if Registered with Q Acoustics


    • 1 Year Standard Manufacturer Warranty


    • 1 Year Standard Manufacturer Warranty


    • 2 Years Standard Manufacturers Warranty
    • 3 Years Extended Warranty if registered with Wharfedale
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