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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
ditusa's avatar
ditusa
1,904 posts
 
Also, I do not agree with everyone who claim that speakers with higher sensitivity will sound better at low listening because, at 60dBs sensitivity shouldn't make any difference at all.
Agreed!
ghdprentice
7,310 posts
 
Absolutely yes. Improving components improves the sound at all levels. Your choice of coarse must be a component which has the right character for your listening tastes. Also, while this is crude it has always worked for me, at least a 2x increase in cost… you can adapt the idea to the used market. But anything less is likely to be a lateral move where you will just trade good and bad characteristics. You need to jump a level or two of performance.
holmz's avatar
holmz
2,328 posts
 
Would a Lyngdorf TDAI 1120 work?
ditusa's avatar
ditusa
1,904 posts
 
@holmz,

 ''So 1 W would make 86 dB.''

Just to be clear, only in an 8 Ohm load does 2.83 volts = 1 watt. In a 4 Ohm load 2.83 volts = 2 watts. The OPs speakers are 86 dB SPL (2.83 V/1m) @ 4 ohm.
jjss49's avatar
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jjss49
6,612 posts
 
my 2 cents

of your candidates, i would favor the hegel h390 - it is brilliant, and if your source is really good, i believe you will hear a difference going from the pathos - the h390 is has power/control to spare, yet also the sweetness, correctness of tone, nuance and utter blackness of background to please at lower volumes as well

the other choice would be the pass, but the int25 is power limited, and you have stated you want more power into the sf 4 ohm load
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