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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

Showing 1 response by georgehifi

georgehifi's avatar
georgehifi
10,312 posts
 
jllu
As good as the Aegir is, it stll only 20watts, and that's a bit light on for the 84db efficiency of the LS50’s. I would prefer to see a 50w amp up them, especially with this comment
The electrical phase angle is generally mild, but the combination of 5.3 ohms and –41° at 135Hz, a frequency where music often has high energy, will make the speaker work at its best with a good, 4 ohm–rated amplifier.
Unless your in a small room near field, then it should be fine.

Cheers George
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