2. amps-preamps
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Peachtree GaN 1 Beta

Before I start my post here is my current system for reference:

Auarlic Aries G1 --> Denafrips Terminator or SW1X DAC --> Audio GD HE1 XLR preamp or Sachs preamp --> various tube amps --> Cube Nenuphar Mini's w/ a pair of REL S510 subs. Cables and power conditioning commensurate with the rest of the system.

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As warmer months approach I have been looking for a cool running amp to replace my Line Magnetic LM-518 and other tube amps for a few months as they run pretty hot.

I've been interested in the GaN FET amps and just purchased a used LSA Voyager 350 Gan FET amp which I should receive in a few days. I've tried class D amps before and while they checked a lot of boxes I just didn't feel drawn in. However, I like to explore so I figured I'd try the GanFET and since the amp has zero feedback and my speakers seem to prefer amps with little or no feedback I figured it be worth checking out.

Today, Peachtree Audio sent out an email inviting users to a beta of their new Gan 1 amp. Here are some excerpts from their email:

 

What is the GaN 1?

In basic terms it is a 200 Watts-Per-Channel (WPC) Power Amplifier designed to be the sole interface between your digital audio device with a variable output, like a Bluesound NODE, and your speakers. The GaN 1 is a simple, pure and cost-effective audio solution: connect the GaN 1 to a streamer and a pair of speakers and you have an amazing Hi-Fi system. That's it...no DAC, no preamp and no input switching. The signal path from the music to your speakers is remarkably short and free of artifacts. Want to hear the intricate details in your music that have always been there, but you couldn't quite make them all out before? Then the GaN 1 is for you!

What makes the GaN 1 so special?

First and foremost is the GaN-FET amplifier module. It has several inherent advantages in a power amplifier that even the best MOS-FET designs simply cannot achieve. A GaN-FET power stage provides a precise high-power reproduction of the Class-D PWM signal with extremely high linearity. This linearity eliminates the need for ANY feedback, ultimately allowing for the best possible audio quality providing clean, clear middle and high frequencies and a tight, solid reproduction of low frequencies. GaN-FETs track the complex audio waveforms MUCH more accurately than MOS-FETs, resulting in significantly more transparent and natural sound. The difference is something even a casual listener can hear and appreciate. The GaN 1 is also designed so that it does NOT require a digital-to-analog-converter (DAC). The digital audio signal at the input directs the amplifier outputs to drive the speakers. Although DACs have continued to improve over the years, there is no DAC better than NO DAC! This concept is not new as similar devices known as "Power DACs" made quite a splash in our industry years ago. But this time around, by executing the concept with GaN-FETs, the bar is raised to an entirely new level.

Key Features at a Glance:
▪ 200 WPC state-of-the-art GaN-FET module
▪ ZERO feedback design
▪ Regulated 450-Watt power supply
▪ Coaxial S/PDIF input with native support up to 24-bit / 192kHz
▪ DAC-less design
▪ Power on/off trigger port
▪ All aluminum chassis
▪ No cooling fans

 

This sounded really interesting to me and since I have a good streamer I signed up for the amp beta only. One aspect that intrigues me is to create an extremely minimal signal path. My speakers are single driver, crossover-less design. Employing the GaN 1 will mean the system will be Auralic Aries --> GaN 1 --> Cube Nenuphar Mini's. Will that lead to a more engaging sound vs the full system? Will the Voyager GaN 350 outperform a tube amp in the full system? Who knows, should be fun to find out....

Now, I have no idea how either of these GaN FET amps will work with my speakers. The Cube Nenuphars seem to prefer amps with low damping and no negative feedback, which is more common with SET tube amps and Class A solid state amps. I'm not sure of the damping factor of the GaN FET amps, but both are Zero feedback designs, and both have way more wattage than I need. For reference, I have a 1.5 wpc 45 tube amp that sounds amazing with the Cubes, so high wattage is not required. I am interested though in what these amps will sound like compared to my tube amps, and I am particularly interested in what the streamer direct to amp Peachtree will sound like.

I am also looking to acquire a First Watt SIT-3, which is a great match with the Cubes, but now that they are no longer produced prices have gone above my current comfort level. If I can get one I will throw it into the experiment.

The Peachtree won't be shipped until sometime in June, or possibly later. In the meantime I will get the LSA Voyager in the next few days. I might even be able to get it hooked up this weekend so stay tuned, should be an interesting experiment...
abd1
ricevs
1,543 posts
 

I don’t need to bet on the Gan 1 versus Gan 400.....it has already been A/Bed here on this thread. I was talking about the Technics and Lyngdorf amps....which both also use digital amp technology. The GaN 1 has no input switching or bit reducing volume control.....it is super simple and pure.....that is why I "think" it might be better......and the company that wrote the software....(Elegant Audio Solutions and their earlier company D2Audio which is now part of Renesas)....has been writing software since the early 2000s. No one in the world has A/Bed any of them, that I know of. The main "conversion" from digital to analog or...PCM to PWM is written in software in a digital amp......so the better the software the better the sound. That is why there will be even better digital amps in the future.....besides the power supply purity, parts purity, etc. that also effects sound.

mbolek
167 posts
 

I have both and they are really good! The GaN1 opens up options to simplify a dedicated streaming configuration. Although, I’m planning on using two of them in an active setup using a miniDSP SHD on the front end. I have one already hooked up and it sounds fantastic driving a full range Camerton Binom-A2s. I have a Class D mini GaN5 on Purifi subs and it is quite impressive.

With that said, the GaN400 has more power and I’m very happy using it with my Rose 150B driving Wharfedale Elysian 2s. It sounds better and than my previous reference Purifi amps.

 

 

 

jimbones
253 posts
 

im following this thread and I am considering the Peachtree GaN400. Can owners of the "400" tell me what their previous amps were and comparisons etc. I know the two popular amps out there are the Purifi and GaN amps. I assume they have similar attributes but have some sonic differences, if some one can explain. Thanks Much.

donnylovely
105 posts
 

Check out the Darko or audio excellence Canada review on the 400. I think only 1 person on this thread has the 400. There's probably a thread dedicated to the 400, I would think. 

singintheblues
96 posts
 

 

donnylovely

They don't ship outside the US. But their products accept 220 v.
 

You could do a mail forwarding service or if you know someone in the US, have them send to you. 

 

 

Thanks donny

Re the 220v, do you know if it can be plugged straight in or is there some internal jumper or something?

Is it the same with the Bluesound Node?

 

I’m looking into the shipping.   I need to find out the shipping weight & dimensions.

 

 

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