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
@realworldaudio tbh i wasn't aware that higher power amps have lower resolution on low level listening. Can you name any specific integrates that have great resolution on low level listenings? 
These are dictated by the laws of physics.
(Does the quanta of an electron get bigger in bigger amplifier?)

@realworldaudio tbh i wasn't aware that higher power amps have lower resolution on low level listening. Can you name any specific integrates that have great resolution on low level listenings?
I would suggest some questioning of the factualness, and proof of various claims, would not be a wasted question for you to ask.

I do not want to come across as too harsh, but it is a low probability that all these solutions can exist simultaneously as optimum solutions.
(You have been told so far):
  1. To use more sensitive speakers
  2. More powerful amplifier
  3. Use a less powerful amplifier
  4. Use Subs
  5. Use tone controls and loudness controls.
If it loud enough now, then we can exclude #1, #3 immediately. #2 we could exclude with a volt meter or an oscilloscope… Or I previously excluded it using just a pencil. 

At least three people mentioned tone and loudness controls for low level listening. Does your current amp/preamp have that?
There is a lot of info on the net about tone controls and Fletcher Munson curves.

That puts the #4 (sub) as potentially having some merit if it was I used as a way to have tone control.

If you are happy with it (which you said you were in the opening), then doing nothing is a pretty safe bet, and it is in between having an amp with more power and less power.

That leave #5 (tone controls), via a preamp, as being the only thing to look at that has any rational basis in fact.

The other reason to change things would be purely emotional. That is not bad, it is just not reasoned.
@holmz Thank you for your wise words. You remind me of person called 'jan.vigne'. He was a very knowledgeable hones and rational person active on stereophile and ecoustics forums (but sadly not here). 
Low level listening and having good sound at low volumes is way more complex than the power rating of the amp and I would disagree with the amount of power on hand being a useful metric.
Some speakers are "on song" at lower volumes better than others (Harbeth come to mind). Monitors with smallish drivers can take volume for the midbass to catch up to the rest of the frequency hence amps with a "bottom up" sonic signature like Pass are good choices there.

Some amps are poor at low level listening by design (most class D IMO) due to poorly designed input and driver stages typically.

Some cables, usually those with the lowest noise floor, have it all present at low volumes, Allnic comes to mind.

Many integrated amps, even some very expensive ones, can have sub-optimal preamp stages as well which is not ideal for low level listening.

A good consideration would be the Audia Flight FLS 10 listed here on Agon currently. If its anything like its sibling amp than it's a winner. Not likely they cut corners with the preamp stages in that integrated and the amp section is from the FLS 4 which is a stunner.


@holmz Thank you for your wise words. You remind me of person called 'jan.vigne'. He was a very knowledgeable hones and rational person active on stereophile and ecoustics forums (but sadly not here).

Well please send Jan my apologies for besmirching his/her fine name.

  • What country are you in?
  • What are you top 3-6 song you like?
  • What are you top 3-6 books you like?