Underpowered Amp Pro?

[MacPi]

I have a new Amp Pro and am very pleased with the sound quality, but it seems a little underpowered . I have effective 98 dB speakers and the 60 W amp was always sufficient for them, even much lower power allowed them to drive well. However, in this case I often have to approach the end of the scale and on quiet classical tracks even 100% is too quiet. Maybe in the next firmware the gain of the preamp secction could be increased? Maybe here is the cause?

 

[slartibartfast]

I have a new Amp Pro and am very pleased with the sound quality, but it seems a little underpowered . I have effective 98 dB speakers and the 60 W amp was always sufficient for them, even much lower power allowed them to drive well. However, in this case I often have to approach the end of the scale and on quiet classical tracks even 100% is too quiet. Maybe in the next firmware the gain of the preamp secction could be increased? Maybe here is the cause?

There is a Pre-gain setting for each input you can try. However this may cause clipping on some very wide dynamic range classical music.

 

[Valentino]

It’s not really underpowered (117 W clean into 4 Ohm, and your speakers are on the sensitive side), but 20 dB gain may still be insufficient for your system. Try adding 3dB on the input gain.

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I have some Mahler that is recorded with barely any compression, e.g the Inbal cycle on Denon and the Jerry Bruck recording of the Horenstein M3 on HDTT. Those peak at 105 dB here an the most quiet parts are borderline inaudible like in the concert hall. Volume at 100 of course. I have to turn down Cowboy Charter a lot…

 

[574stereo]

If I may politely point out.. I think you're confusing gain with power.

Gain tells you how much 'signal boost' is available on tap.

Power tells you what the maximum output capacity of the amplifier output stage is.