Buckeye Amps: 2nd Generation Purifi EIGENTAKT 1ET9040BA Amplifier

[Buckeye Amps]

@+VP/-VP Power Stage, rail voltage +46V/-46V?

Yes.

Edit: MA beat me to it.

 

[goryu]

Jul 5, 2024

Will have final measurements hopefully next week.

Any updates?

 

[Buckeye Amps]

Any updates?

Just working out a few small kinks with the AP setup before final measurements. Sorry for the delay, but want to get the AP measuring setup where it should be first before releasing the final measurements.

 

[goryu]

 

[Buckeye Amps]

I mean we could rush the end product but I doubt that is the best approach when it comes to quality and performance.

 

[Analoglesspursuit]

I applaud your approach. Regrettably so many others treat consumers as beta testers with a “just push it out, we’ll fix it later with an update” attitude.

 

[MGJ]

Buckeye Amps has orders to fill first, namely mine.......

 

[Julf]

I applaud your approach. Regrettably so many others treat consumers as beta testers with a “just push it out, we’ll fix it later with an update” attitude.

Did you say "Microsoft"?

 

[welwynnick]

More like Wiim. Can't believe they released Ultra without fully developed functional USB port. Rush job.

I think that happens all the time - pressure of time to market. Look at some of the clunkers that Amir has exposed over the years.

 

[goryu]

Guess it depends on your definition of "rush". The product was announced over 2 months ago- prematurely perhaps?

Don't mean to be impatient, but I guess I am...Just looking forward to listening to some music...

 

[shion_ca]

@Buckeye Amps So which Op Amp did you end up settling on? Any interesting results in the comparison measurements?

 

[Buckeye Amps]

@Buckeye Amps So which Op Amp did you end up settling on? Any interesting results in the comparison measurements?

There was a slight difference between the 1612 and 1656, with the edge going to the 1656. But it was nothing audible. We are just working on getting some background noise removed from our AP setup (not related to our input board or the 9040 module) before taking final measurements to post.

The AP is very sensitive which means it is also suscpetible to small environmental hiccups/variables that can affect the overall noise floor (variables that would otherwise be meaningless in other test setups or real world usage).

 

[Doodski]

There was a slight difference between the 1612 and 1656, with the edge going to the 1656. But it was nothing audible. We are just working on getting some background noise removed from our AP setup (not related to our input board or the 9040 module) before taking final measurements to post.

The AP is very sensitive which means it is also suscpetible to small environmental hiccups/variables that can affect the overall noise floor (variables that would otherwise be meaningless in other test setups or real world usage).

Do you operate the AP?

 

[Buckeye Amps]

Do you operate the AP?

The "silent partner" in our company does (the one who designs our input boards). He always prefers for me to leave his name/company out of the discussion.

 

[Doodski]

The "silent partner" in our company does (the one who designs our input boards). He always prefers for me to leave his name/company out of the discussion.

Oh cool... I was curious about your doctorate and if in your travels you had covered any electronic and computer science to do that and more. That's all.

 

[Buckeye Amps]

Our 9040 Monoblock is now live on the website and ready to be ordered!

 

[pogo]

1400 watts @ 2 ohm with the Hypex SMPS1200A180?

 

[yys310]

That's a great deal!

 

[Buckeye Amps]

1400 watts @ 2 ohm with the Hypex SMPS1200A180?

Good catch. Fixed the base product specs since I am only listing the SMPS1200A180 right now. Once the Micro Audio SMPS is offered in larger quantities I will update to more appropriate max 2ohm wattage

 

[Buckeye Amps]

Dylan,
Will the new OPA1656 based board also work in Buckeye Purifi 1ET400A builds?
Thank you!

The board for the 9040 is only made to support the 9040 (and eventually the Hypex NC2k when we add that on) since those modules are not directly socketed into the board like the 1ET400A and NCx500.