Buckeye 3 Channel Purifi Amplifier Review (2nd)

[junior00027]

what about on/off pop ?

 

[Trell]

what about on/off pop ?

Read the review.

 

[sarumbear]

@amirm should it say: No load impedance dependency?

 

[Kachda]

If anyone would ever claimed that such a thing as the material of the clamp connectors with the binding posts matters without evidence the least that would happened to him would be tar and feathers here.
But experience on the one hand (@pma ) and state of the art instrumentation and skilled operator on the other (@amirm ) found such a case along with the solution.
Nothing will surprise me from now on.

Thanks Amir!

The only reason the distortion was discovered was through Amir’s testing, not audibly (i.e. with evidence). So if a claim is made *without evidence*, it should be treated with caution.

 

[Rewind]

A comparison between new class D amps, including purifi, Nilai, eigentakt, icepower and Passlabs. Made by the youtube channel theaudioalpha. https://www.youtube.com/live/NdZFAWe1Nxo?feature=share

 

[yahrightthere]

All for less than a cup of free coffee.

That's one expensive free cup of coffee!
Thank's for the review Amir

 

[GeekyBastard]

The case & font choice looks really cheap for something that's $1,699 tho…

 

[Buckeye Amps]

I asked Amir to change the pricing in his post as it is not correct anymore.

 

[Beershaun]

@amirm is there value in grouping amplifiers by gain to make them more of an apples to apples comparison? In this case Buckeye can perform superbly in 15db and 26db gain modes, but some of the top measuring amps have 11db gain while others that perform much worse have 26db or more gain. It seems like people would need to understand what gain they need from their amp and the implications of higher or lower gain amps when sorting through the data to compare products. I would definitely like to better under the gain structure needed and what it means for my system if a choose an 11db amp vs a 26db amp.

Thanks for all your continuing work to enlighten us all!

 

[Dj7675]

The case & font choice looks really cheap for something that's $1,699 tho…

Case is fine. Manufacturer has stated many times he works on bringing value which he has successfully done. There are always tradeoffs but he has been very clear about the case and keeping costs down and value up.

 

[MediumRare]

On sale for $1,395. Outstanding. Can be customized with speakons, etc.

Buckeye Amps

Buckeye Amps utilizes the most advanced audio amplifier technologies available. Authorized seller for Hypex and Purifi Class D amplifiers. Based in the US. Free shipping and worldwide service!

www.buckeyeamp.com

 

[pma]

@amirm is there value in grouping amplifiers by gain to make them more of an apples to apples comparison? In this case Buckeye can perform superbly in 15db and 26db gain modes, but some of the top measuring amps have 11db gain while others that perform much worse have 26db or more gain. It seems like people would need to understand what gain they need from their amp and the implications of higher or lower gain amps when sorting through the data to compare products. I would definitely like to better under the gain structure needed and what it means for my system if a choose an 11db amp vs a 26db amp.

It would be the best idea not to show that chart at all, for several reasons, one very important of them you have just mentioned. That chart only leads to oversimplified conclusions of those who have not gained enough knowledge to be able to separate apples from pears.

 

[Dj7675]

According to this video for that particular loudspeakers and 1st song only, my ears tell my brain to put this rank:
1. IcePower (best)
2. Hypex (lower low)
3. Purifi (mid)

You are ranking sounds of amplifiers by playing over a YouTube video?

 

[xaxxon]

So, do you mean purifi is better than hypex? Or, is it just bad design from the 8-channel?

Purify is quite a bit more expensive, so I'd just call it "different"

502 amps are $1100 for 4 channels.

 

[Dj7675]

Yes, play on YouTube then my system deliver it to my ears.

Simple not even a remotely reliable way to test something like this. Totally meaningless IMO.

 

[dkinric]

Yes, play on YouTube then my system deliver it to my ears.

ok, thank you for sharing your thoughts, but what's relevant is what is coming out of the amps. What happens in your particular system and then between your ears and your brain really has nothing to do with anyone else. That's why we focus on measurements, so we can compare apples to apples.

 

[TNT]

Request was made to show power with reactive loads as opposed to just resistive as is the norm in my reviews (and industry). Using my new PowerCube loadbox, I can do that:

Mucho appreciated. Please make it a standard measurement until we see that no amps miss on this... Thanks again. Purifi did well.

 

[Buckeye Amps]

Simple not even a remotely reliable way to test something like this. Totally meaningless IMO.

This same video and people claiming to hear a difference came up in another review thread two months ago as well

 

[thegeton]

According to this video for that particular loudspeakers and 1st song only, my ears tell my brain to put this rank:
1. IcePower (best)
2. Hypex (lower low)
3. Purifi (mid)

I can't stop laughing...

 

[Trell]

Sorry if my conclusion hurting anyone. I only want to be honest and I don’t listen to the person on the video such as: “icepower is more harsh… bla.. bla..bla…”
No, I can’t be fooled by that.

No hurt feelings at all! We’re just incredulous that you try any ranking of the amplifiers by listening to that YouTube clip.