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

Showing 20 responses by dolfan

@wise Santa B

Hoping we both get ours next week. They told me last week I would hear sumn about testing and or shipping but nothing so far.

u have nice systems

Mine will be Gan 1, Node, Tekton Perfect Set, and Rythmik FV15HP. It's a TV and backround music set up.

I need a coax cable. Where would u start?

Got this response Friday

 

The Gan 1 Beta Encore units will begin shipping next week. Once your unit is in production/testing, we will send out an update letting you know.
Then once it ships, you will receive an email with tracking information.
 

@wise Santa B why do you expect delivery next week? I am waiting too.......

Thanks for this thread folks I NJoy it! U R All WAAAY above my pay grade

@ricevs u just start typing the @name and it populates. God Bless u

@sirnui tell us how to hook up the LPS to the Node? I thought it had a connector that was proprietary?

atmasphere's avatar

atmasphere

10,753 posts

 

So Ralph, are you saying that the data output (to be sent the the input of the Gan 1) sampled at 96kHz would not necessarily be a restrictive limiting factor to the ultimate performance of the Gan -1?

I am. The limitation is in the word length, not the scan frequency.

 

Is this what you are talking about?

I got the Gan 1 a couple days ago. Can only compare it to my Classe Sigma integrated. The difference is night and day. I like it. So simple yet so good. Using the Node with it. 2.1 setup for TV and streaming. I posted this in Digital thread earlier by mistake.

@kuribo we are grateful to you scientists for steadily advancing all things in this world. Most of us don't have a clue what you can so easily dissect. The advancements you guys make are truly amazing.

I know there are shortcomings in everything but for us regular folk the sound quality and simplicity we get for less and less money spent is incredible.

 

thank you, dolfan

Hi Folks!

Happy New Year first of all.

So far I really like the Gan 1. I have no preconceived notions but I did buy it based on the amp being directly controlled by the Node and hoped it would sound nice. There is also the relatively inexpensive price. It integrates perfectly with my Nvidia Shield Pro too. The simplicity of the setup and the sound quality it gives me I feel, and that is purely subjective, is really good. I love a simple set up and this is as simple as it gets yet does everything I want from it.

So far the 3 folks who have this amp in the thread like it. Time will tell if we just liked the kool aid.

Thanks for all the posts in this thread I enjoy reading everyone's opinion on things. I don't let them influence mine though.

 

Kindest regards, dolfan

I know there is science in amp design but there is also artistry in they way these designs are implemented. These two concepts of design almost never mesh. All the best audio designers are as much artists as they are scientists.

 

Sometimes you just can't explain why something works when the scientific mind says it shouldn't. I see Picasso and am dumfounded others see his stuff and marvel at it. Audio is like this. The market will tell us what consumers think.

Put on the Jazz Groove Radio station and smile folks.

Happy New Year, dolfan

@ricevs I didn't take @atmasphere comments as meaning there is no sound difference to different architecture. I thought he was saying they are much more advanced in "forecasting" what stuff sounds like and the ability to confirm that with testing and data and listening. I think you both are confirming the same thing? 

 

thanks to everyone for making this a very interesting thread, dolfan

The reviewer said he had some issues with HDMI on his Samsung TV. Just wanted to say my LG TV to Bluesound Node via HDMI has worked without issue. You have to turn on PCM. 

Did you order amp only or combo with Node?

Email them again and remind them when you ordered.

@kitsap2  I agree with your review. I have the Tekton Perfect Set Speakers. If you get an IEC adapter for the Node and use a better cord you will improve the sound quite a bit. I also put a better cord on the amp another jump in sound quality. Watching the game last night the orchestra sounded wonderful!

Happy listening, dolfan

@audiocanada get the Node power supply upgrade from beatechnik on cbay. Get the Isopods on glamazon. Linkup network cables. Play with some power cords and fine tune your speaker positions. ?Digital cable. Little things pay big with the Gan.

I sent in my Gan 1 to @ricevs  for mods. I really enjoyed the stock version but took a chance. He put in new IEC and I got the WBT binding post option plus whatever else he does. It's a different amp. Much larger soundstage, speakers disappear on all but the worst recordings, much more musical, more depth.  Really surprised at the amount of difference. It's only got 50 hours or so on it so more to come. Glad I took a chance.

A lot of subs have speaker level inputs too. My Rythmik F15HP has those and line level inputs. I am using the line level outputs from the Node to the sub and the digital to the Gan 1.