High end high quality int. amp for low level listening


Hello to all Audigon members.  I'm quite in a dilemma weather I should upgrade my amplifier. Currently I own Pathos classic one MK3 driving Sonus Faber Sonetto's speakers, and I must say I'm very happy with sound filling my 35 square meters room. However, it's known that the speakers are power hungry as they rated at 86db sensitivity and 4 ohm impedance and I think they will surely benefit from a bigger power supply. With all that being said I'm not sure if I will hear any improvement mostly because 90% of the time I listen at ~60dBs SPL. My budget is around 5k $ and these are the amplifiers I've been considering:  Hegel H390, Anthem STR, Cambridge Audio Edge A, McIntosh MA5300/MA252, Accuphase e280, Rotel Michi x3 or used Pass Labs INT 25, Mark Levinson 5805.

What do you think guys, will any of the amplifiers make ay difference at 60dB SPL ? 
celestial__sound
I was kind of interested in seeing if anyone has a firm grasp on what makes for a system that sounds great at low volume. It has puzzled me for a long time. From the answers, it doesn’t sound like anyone else does. I have a fuzzy idea.


After fifty years of trading up in an attempt to put together the best system I suspect it is primarily the speakers… but you can loose it by not having good electronics behind it. Planar speakers don’t seem to be good at it. I am thinking efficient speakers are more likely to exhibit good performance at low volume. Tone controls don’t help… I don’t think it is a fundamental characteristic of the amp… certainly not the preamp. So, everything, to me, points primarily to the speakers.

My current system is very good at it. Quite by coincidence (with morning coffee) I am currently listening at about 60db. The noise floor is very low, sounds discrete and extremely fleshed out. My speakers are not tremendously efficient (see my user ID), but they are adequately powered.
I share your pain. Picked up a used Mac 31V with loudness control to replace a McCormack TLC and suddenly listening at low levels was very pleasant. More power or speakers with higher sensitivity won’t help. Find a dealer who has an integrated with loudness so you can hear the difference.
I always encourage more power!  I'd also explore a Moon by Simaudio integrated amp and I'd try the McIntosh MA6900 or 8700 over the 5300...
I was kind of interested in seeing if anyone has a firm grasp on what makes for a system that sounds great at low volume. It has puzzled me for a long time. From the answers, it doesn’t sound like anyone else does. I have a fuzzy idea.
I suspect that this @dil fellow might:

Or install an equalizer.


If one had measurements of SPL versus frequency then that could be a start.