30w class A amp for Joseph Audio perspective 2?

Thank you all with your suggestions! all seemed interesting. I realized that my dac was set at a bit high output level (18dbu) so I set it to 12dbu yesterday and the combo sound much more controlled now. 

 @soix  I am interested in the clayton s40 for a while but seems they rarely show up in the market. 


@paladin  Cool, thanks for the suggestion. I also changed the feedback of Vac 70/70 to be 5db and lowered the DAC's output level. Now everything sounded more smooth. Is there a recommended feedback setting for the Vac 70/70 ? 

@jjss49  Can you help clarify more the difference of amp power and input sensitivity and how that applies to my case? Thanks

tiger

how far you need to turn the knob on your amp volume control (12 oclock, 3 oclock etc etc) to get the desired volume playing into your room is a function of how sensitive your low level and amplifier input is to the signal being fed to it (and of course the sensitivity of your speakers) - ideally you would have a good range of adjustment in the middle of the range of the knob (or digital control), but sometimes not

analogy is some cars have a very sensitive gas pedal - you just barely touch it and the car lurches forward ... other cars you have to depress the pedal 40-50% of get good movement... car A is not more powerful than car B... just a more sensitive gas pedal...

yuhengdu_tiger

I went from the Ren. 30/30 while I had SF Amati's (just a tad short on horse power to drive them) to the Ren. Sig. 140's & upgraded the speakers to the SF Stradavari's.
In both cases - I start @ zero feedback & play from there - You'll find the right setting for your taste. 
I would adjust the DAC first - Then play with the feedback on the amp.

@jjss49  Thank you! Makes a lot of sense!