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Belles 350A Reference vs. Pass INT-150

Hello, I am currently running an Opus 21 cd player pre-out
to Belles 350A Reference to Dynaudio Special 25s. I'm wondering if the Pass INT-150 has significantly: lower noise floor and finer midrange to high frequency detail, plus better imaging than the Belles, or would this be a lateral move? Would appreciate any comments from someone who has compared INT-150 or X---.5 series with the Belles.

Also needing more inputs, so considering adding a pre-amp to the Belles instead of switching to an integrated. I liked the natural detail in the (discontinued) Herron solid state pre-amp, may consider one of the more recent Herron tube pre amps.
jmlm
tvad
9,467 posts
 
I owned Belles 350A Reference monoblocks, and I compared them to a Pass Labs XA-30.5, and later to Pass Labs XA-60.5 monoblocks.

It wasn't a close contest. The Belles are very good. The Pass Labs amps XA-.5 series amps are exceptional.

I expect the same would hold true for the INT-150.

IMO, it would definitely be a move up.
auxetophone
114 posts
 
The INT-150 is based on the X.5 series rather than the XA.5 series, so it presumably gives something up to the XA's in refinement in exchange for the extra power.

The INT-30A is more directly comparable, being basically an XA30.5 with a passive volume control and control circuits.
tvad
9,467 posts
 
Good point Auxetophone.

I still believe the INT-150 would be a step up from the Belles 350A Reference, but as always the final determination is in the ears of the listener...
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