With both my Class D Hypex nCore NC252MP amp and linnrd's Class A Pass/First Watt SIT-2 in my sound room a couple months back, this allowed me to switch reasonably quickly between them to listen. You might be wondering about some comparison comments on how the amps sound. Certainly much has been said in the press about sonic differences between amps over the decades, but relatively little has been shown with measurements in an actual room using what comes out from the speaker.
|Notice the log scale used!|
|BTW: Notice the 60Hz hum with the Hypex nCore. Normally this is not present when I'm feeding it with balanced input. In this case, I used an XLR-RCA adaptor for the preamp RCA input to the amp which picked up some hum.|
- Flat frequency response 20Hz to 20kHz measured with a typical resistive load (like 4Ω).- Low distortion <1% THD for whatever maximum watts you need (100W into 8Ω likely adequate for most of us).- Adequately high damping factor say 20x across the frequency spectrum for your speaker's nominal load assuming there are no prolonged portions of the electrical impedance curve dipping far below that.- Low amplifier noise floor devoid of hum, hiss, noise spurs above your listening room's ambient noise level when the amp volume control is set to desired listening amount.