Peachtree Audio GaN400 Power Amplifier Redefines Class D?

Peachtree Audio are a very interesting company. Having owned two of their integrated amplifiers for the past decade, I must confess that I have a love-hate relationship with the brand. Their products have always had great features and value for money, but I always found the amp sections to be weak. Both integrated amps sounded great within their limits, but as soon as I switched to more sophisticated speakers, the sound quality began to decrease. The all-new Peachtree Audio GaN400 power amplifier aims to change that problem forever.

The Peachtree GaN400 represents a new direction for the brand and is the next step in the evolution of power amplifier design and manufacturing process. It is designed to provide accurate waveform reproduction, more power and control, low global negative feedback, and extremely efficient use of AC power.

So what is the difference to existing Class D products?

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

It has balanced and unbalanced audio inputs, a trigger input and is compatible with speakers with nominal impedances from 2.5 to 16.

What is GaN?

The GaN400 achieves a new level of performance and efficiency by using GaNFETs instead of MOSFETs (Metal-Oxide-Semiconductor Field Effect Transistors), which have been the industry standard for more than 50 years. MOSFETs revolutionized the electronics industry in the second half of the 20th century and have become the most widely used transistor in electronics and the most widely used semiconductor device in the world. Their importance in the electronics industry and the other industries that rely on them should not be underestimated.

However, over the years, the rate of MOSFET improvements flattened as performance moved closer to the theoretical limits of the materials and processes. The need for something better grew. Enter GaN.

GaNFETs began to gain attention over the last decade when sound engineers and designers realized they were suitable for high frequency, high voltage, high temperature, and high efficiency applications, especially when compared to their MOSFET counterparts.

GaNFETs turn on ~ 4 times faster and ~ 2 times faster, reducing switching distortion (ringing) by several orders of magnitude. This, in turn, allowed the designers to use much less global negative feedback to get great measurement results. The result is an amplifier with exceptional musicality and excellent measured performance.

The Peachtree Audio GaN400 power amplifier is designed to work with the Peachtree PreDAC, a combined 32-bit / 384 kHz PCM and 5.6 MHz DSD DAC along with a preamplifier.

  • State-of-the-art GaNFETs (gallium nitride field effect transistors)
  • 400 watts per channel
  • Compatible with speakers from 2.5Ω to 16Ω nominal impedance
  • Balanced and unbalanced inputs with differential audio circuits
  • Front panel and chassis made of aluminum, encased in a real wood housing in breathtaking Gloss Ebony Mocha or beautiful Piano Black
  • Limited edition ash available

For more information: Peachtree GaN400

Comments are closed.