How does this Apollon compare with your P482?

1. Hey @Alan March, a few Purifi vendors (BoXem and Audiophonics) have stopped shipping to the US. Essentially, they say the Benefit (large customer ...

Alan March wrote: I don't mind producing data for our amps, nothing to hide. It's simply that I don't have time. Very busy preparing for the Bristol...

Guess the answer is a hard no!:) I understand. All audio amplifier/loudspeaker measurements should be restricted to the audio band of interest.

@Alan March, should time permit, would you be willing to generate the above sweeps for your Gen2 amps (p801 or p482)? Simply looking at the profiles a...

Alan March wrote: Is it composed of 1612s? :unsure:There are other topologies beyond the Purifi reference circuit used by most. No doubt ... does th...

Thanks, Alan! ... This is an excellent analysis, tutorial, and well-written summation of audio measurements we all deal with(y). Thanks again. I was n...

Alan March wrote: I will come back to the topic of FFT techniques in a later post but let's look at the graphs you have posted. They are not directly...

mikewxyz wrote: I received my P482 amp the first week in December and I was delighted. After listening to it for six weeks, long after the new audio e...

453 Thanks for the primer, Alan. I welcome the offer to explain the concept of FFT gain further, as you've suggested. Thanks! The above plots were wh...

Alan March wrote: Thanks. Just had a look, it's been a long time since I looked at the Weiss. Essentially, whilst it is a very good performing part, ...

Oops. Then try this. Thanks!

Alan, do you find the specs of this Weiss discrete opamp credible (scroll to the bottom)? If so, does it exceed the performance of the popular OPA161...

So the 30uV is a result of amplifying the 2uV signal? Here is the response to the same question I asked you earlier.

Alan March wrote: Its primarily because I suspect they are re-using their previous designs that were OK for the previous generation of Purifi modules,...