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 50 responses by donnylovely

Peachtree made it to a price point though. Have you heard a moded version of the  amp or are you just making stuff up? 

Measurements can tell you if there is a problem, but they can't tell you if the thing will sound good or not.

Remember it’s not your fault. It’s not your fault.

 

 

Try the gan 1, then talk. Try the mods, then talk. Don’t need the non experienced people in here, talking like they know something about the gan 1 when they have no experience with it. We need protection from the ASR, don't t need them to "protect" us from whatever they think they are doing. 

@art_boston I stand corrected, only 2 people care about. I only care about sound quality. I'll never send my personal stuff to those jokers at ASR. They can buy their own gan 1 and be smug about their measurements. 

It's not class d, it's a digital amp. Technics has a ganfet digital amp also. 

I'm going to add a minidsp flex as a preamp to my Gan 1 . That will control the volume in 32 bit.

 

Production starts in a week and a half! 

It's been two weeks of the two or three to get through production. Has anyone got their unit yet or email saying theirs is in production? 

Got mine today. Very detailed, very realistic. Improvement in sound stage and separation over my musical fidelity m6s prx. 

I haven't bought the minidsp yet, I am still deciding if I need it or not. Thanks for the info though. I was using a denafrips ares 2 dac with an ifi spdif ipurifier 2 connected by a Mowgami coax cable to bluesound node . No preamp, was using the Node as volume control. 

Has anyone compared the Gan 1 to the technics sug700 m2?

Both use the ganfets and are all digital. Is the extra $700, soon to be $900, worth it if only using streaming? Does it have better sound quality? 

If you add the ifi spdif ipurifier 2 to the node it will sound as good as the Zen. 

 

There's a 32v switch mode power supply with an 8A fuse. Nichicon caps on both the power supply and amplifier board. Elegant Audio solutions 200s Rev A board. Wires seem to be a decent guage with ferrite cores on the speaker wires going to the binding posts. Binding posts seem to be of high quality, not magnetic. 

No, meant to say, it should. Sorry. I wasn't thinking about the other parts either. How did you mod ipurifier?

Is it safe to bypass the first fuse in the IEC outlet? How do I tell if it's fast or slow for the ceramic one inside? 

I would think the lumin would make a big difference. I believe it reclocks the signal as well. I was looking at upgrading to the lumin as well. 

I didn't really understand what he's saying either. I'm betting his hifi rose sounds much better than the node, it does more than just pass a signal. I got some big improvements with ethernet switches and adding a lps to my node. I look forward to hearing about any mods you do. I'm looking at adding purple fuses right now. 

You must be fun at parties.... It’s a different module. Maybe just listen to it instead. Who cares about load data and rulers? It sounds amazing. Stay ignorant my friend

@kuribo you’re missing out on a great amp because of your prejudices. Have fun listening to those measurements. Plus if you haven't heard or used it, your opinion on how it preforms aren't valid at all. 

@kuribo then why are you even commenting on this thread then if you belive that to be true about this product? The fact that you’re posting on here suggests you do have an interest. Plus the fact that you’ve never tested this item means you have no way to know if it is built good, bad, or otherwise. Keep you comments to yourself unless you actually know what you’re talking about. You're just making a ton of assumptions and being annoying to the people that actually have interest in this product. 

Isn't that every amp though? Is there any amp that is great with every single speaker? The point seems kinda moot

@kuribo of course you have the right. But you're just making yourself look dumb talking all this nonsense when you have no idea what you are talking about. There's no way you could know without actually having the product. All these measurements of other products are useless when talking about this product. If you actually listen to the GaN 1 and test it out , then please share your thoughts on it. You seem to need to be the smartest guy in the room, but you just guessing and assuming everything does not make you that. It isn't useful to anyone except your ego. 

@kuribo So you know for a fact this has a bad load dependent frequency response and that peachtree did nothing in the design of the amp to compensate for it? 

That would be called an assumption. If you actually listen to the amp with two different pairs of speakers of different resistances and the sound falls apart then it would be fact. What has been true in the past doesn’t necessarily mean that it’s true with this amp. Even if it is true with this amp, they might have found a way to compensate for it. But then again it could be totally true. At least actually find out though before touting opinions as facts and telling everybody it is crap. @kuribo

Still an assumption. If you actually listen to it let me know what really happens. 

Are the ganfets part of the power supply? Idk if I would want to change those out if that’s the case. Plus it’s a 32 volt 8 amp power supply, might be hard to find an audio one that size. But I to would like to know.

Damn, that's awesome! Only $100 more. I might order a second at that price. I would have ordered 2 from the start if I knew how good it was going to be. I'm sure we won't see prices like this again once reviewers get their hands on it. 

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. 

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. 

The board says 100-250 Vac. The fuse is 250v 8a

So I belive you could just plug it in

That’s because it doesn’t have a load dependent frequency response. It’s a great design. Funny how you don’t know anything about this amp.

You’re the one that is making the accusation, you prove it. Should be easy for you if you have any idea what you’re talking about. That is if you're not making baseless accusations. 

The ad copy? I’m not seeing what you posted. We’re talking about the gan 1, not your hypothetical open loop amp. You're y the only one saying anything about open loop. Sounds like you don’t have any proof. Just making baseless accusations based on some other random amps that aren’t the gan 1

It says nothing about open loop. You still have shown 0 proof that the gan 1 has a load dependent frequency response. 

You have it backwoods, Open loop = no feed back. Sun = hot, but just because something is hot doesn’t mean it’s the sun. Look inside the gan 1 and see, which you obviously haven’t done. If it was load dependent then why is it rated 200w at 4 and 8 ohms? Or is that what you are talking about? I thought that would mean it’s not load dependent, but maybe I have that backwards? Does dependant mean something else in the amplifier world?

What is so funny is that any load dependency really does not mean anything to anyone except those who look at numbers

I 100% agree. You either like an amps sound or you don’t. Don’t see why this guy is sweating some bad measurement, which he made up himself. It is kinda fun seeing what BS he comes up with trying to explain the thing he hasn’t measured though. I’m keeping my Gan 1 long term no matter what measurements or lies people come up with.

@kuribo Pure ignorance would be you complaining about some "issue" that no one cares about and you not even knowing if the gan 1 has the so called issue or not.

Pure ignorance, would be judging an amplifier before listening to it.

Don’t need to know anything about the technical aspect to enjoy its great sound. I guess you only need to know the technical aspects if you want to be a dick about it and rain on everyone’s parade.

 

Example, gan 1, where is your proof that it’s load dependent?

@mbolek those are some nice looking mods. Much higher quality parts it looks like. Have you noticed a significant change in sound quality? 

1db is more of a non-issue than an issue. Sorry we can’t all afford to buy the best preforming amps in the world, that’s more of a non-issue also, always going to be something that preforms better.

Are you serious? None of those amps preform better. Those 3 sound awful. Lay off the kool-aid. You really need to listen to those amps next to the gan 1 before you go spouting off. 

Which specific measurements are worse? The gan 1 doesn’t have overheating problems like 2 of those you have listed. Orchard is also a gan amp BTW. 

@sirnui Damn, that's a serious system. Idk if the gan 1 can best it or not, but I am super intested to hear your comparison. That would be pretty crazy if the gan 1 is better. Also super intested in your thoughts with the different streamers and this amp. Enjoy! 

@kuribo yeah your ignorance. You haven’t listened to it yet. drastically short? How so? Which measurement? You keep saying it’s worse but have given 0 examples. Old tech? Like class a, class a/b? Lots of old tech in amps. Being old doesn't mean anything

@ricevs 100% agree.

They’re too scared to actually listen to it. What if they actually like it? Their brain might melt.

 

It’s returnable, idk what that kid has to lose. If he bought it, then he might actually know what he was taking about. He does seem oddly infatuated with it for not having listened to it.