Buckeye Amps: Purifi Mono, 2ch, and 3ch Official Thread

[squared80]

Finally got all 3 amps hooked up-5 channels of Purifi 1ET400A amplification and 2 channels of NC252MP.

Thoughts?

 

[Rottmannash]

Thoughts?

Plenty of clean power-no more worries about having enough headroom when watching movies at high volume. Love the auto-sense circuit (only on the new Buckeye amps-the older 252 does need a 12V trigger to turn on/off). No need for triggers or switched power strips.

 

[Buckeye Amps]

Glad to see you are liking it!

 

[purrify]

I'm interested in the 3ch. It came out among the top after researching many other builds for what I'm looking for my LCR powering a set of B&W floorstanding. It's down to the Buckeye and 1 other and I'd like to know if this unit is or will be UL listed/certified at some point?

 

[Buckeye Amps]

While I am rolling through orders and was just about ready to get started on November orders (had a few Octobers left), I will be taking the next 10 days "off" from builds to finish my dissertation writing.

In all honesty, it won't dramatically affect November orders, as once I am done with the writing that will be the start of me committing more full time hours to the business and builds.

Just wanted to give the community a heads up. Will still be here to answer emails and questions in the timely fashion as usual.

 

[Rottmannash]

Good luck with the dissertation. Btw my 3 ch Purifi is humming along flawlessly.

 

[JPA]

You should post your dissertation here.

 

[Buckeye Amps]

You should post your dissertation here.

There is a 1yr "embargo" placed on it by my professor once I am finished and upload it to the electronic database in Ohio.....so I can't yet. But after one year definitely will share it of course

 

[Rick Sykora]

My initial 2 channel Buckeye amp measurements are posted on the amp review forum.

See it here… https://www.audiosciencereview.com/...l-buckeye-purifi-amplifier-performance.38701/

Hope this helps until Amir can get around to testing.

 

[vtor]

Thanks for sharing your review. I'm not sure what to make of these numbers (ie: how comparable they are to Amir's reviews of other Purifi amps since other equipment was used in your review Rick), but SINAD seems a touch worse than the other Purifi's that Amir has reviewed? That said, still looks amazing and nothing to worry about

 

[Buckeye Amps]

Thanks for sharing your review. I'm not sure what to make of these numbers (ie: how comparable they are to Amir's reviews of other Purifi amps since other equipment was used in your review Rick), but SINAD seems a touch worse than the other Purifi's that Amir has reviewed? That said, still looks amazing and nothing to worry about

Rick can comment on this more, but I believe the "lower" SINAD is due to the limitation of the test equipment

 

[Rick Sykora]

Rick can comment on this more, but I believe the "lower" SINAD is due to the limitation of the test equipment

Yes, this is discussed at the start of the measurements thread. I have bolded more to emphasize. The max SINAD for the QA401 I use is 101 dB (in loopback).

With some additional equipment, can get to better SINADs, but want to keep it simpler for me and leave something for Amir too!

 

[vtor]

Rick can comment on this more, but I believe the "lower" SINAD is due to the limitation of the test equipment

Yes, this is discussed at the start of the measurements thread. I have bolded more to emphasize. The max SINAD for the QA401 I use is 101 dB (in loopback).

With some additional equipment, can get to better SINADs, but want to keep it simpler for me and leave something for Amir too!

That makes sense; I misinterpreted what that line in the review (and corresponding graph below) meant. Thanks!

 

[TNT]

Why even publish measurement when one know that the measurement system is less competent than the test object?

And why did Amir "promote" this?

//

 

[KMO]

Why even publish measurement when one know that the measurement system is less competent than the test object?

Well, you don't know that until you've measured it, do you?

 

[TNT]

Well, you don't know that until you've measured it, do you?

In this case I think we knew from pure specifications.

//

 

[Rick Sykora]

In this case I think we knew from pure specifications.

//

In this case, the main reason was to validate the implementation of a custom input board. Yes, the equipment used is not capable of the same degree of noise measurement but is sufficient to demonstrate that the amp functions nominally.

If you are happy with specs, that’s fine. Others had requested some design validation and so, as I had already done for Buckeye, decided to share until Amir can do a more complete review.

 

[Buckeye Amps]

In this case, the main reason was to validate the implementation of a custom input board. Yes, the equipment used is not capable of the same degree of noise measurement but is sufficient to demonstrate that the amp functions nominally.

If you are happy with specs, that’s fine. Others had requested some design validation and so, as I had already done for Buckeye, decided to share until Amir can do a more complete review.

Which I greatly appreciate!

 

[thegeton]

In the real world, iterative design and validation never stops. Why should it be any different here?

 

[Buckeye Amps]

How about a nice, white finish?