Music with differences between class A and class D amplifiers


Hello,

I own an ATI AT523NC Class D amplifier and recently purchased a Schiit Aegir Class A amplifier to compare two different approaches to amplification. I've been switching them back and forth all day but can't hear any difference at all between the two in my music. The good news is, both of them sound great.

Does anyone have any suggestions for music that sounded clearly different between their Class A and Class D amplifiers? If so, I would appreciate some pointers on what to listen for.

My setup is PC (Roon) -> Matrix Audio X-Sabre Pro DAC -> Schiit Freya Plus Pre-Amp -> Amplifier -> KEF LS50s.

Thank you for your help.
jllu
Thanks George. Yes, this is a small room near field setup where theoretically the first few watts are the most important.
From what I have read in other discussions as well as publications, LS50s are quite sensitive to amplification. When I include a crappy AVR in my listening test, the treble noticeably sounds more congested than either of the other amplifiers.
Although I have never used a class D amplifier I suspect that well engineered recordings of classical solo piano music, that contain a lot of high speed "transients," would be good choices for this purpose.  You would particularly look for how well notes in the treble region are reproduced, in terms of definition and "clean" transient response.

Here is an example of the kind of music I am referring to:

https://www.youtube.com/watch?v=wj1xQUUJ94U

Happy holidays!  Regards,
-- Al
 
Thank you Al, I appreciate the help. Will take a listen tonight, happy holidays to you as well!