2. amps-preamps
  3. 147774-20202

Pass Labs cooling noise

 I have a recently purchased Pass Labs INT-60 that is making periodic clanking noise as it is cooling down on turn off.

My many previous non- Pass amps were always quite, Mac’s and  even my Parasound JC5.

Any ideas before reaching out to the dealer/company?

BTW the Pioneer S-1ex’s sound amazing with this setup with the OS Audio Directstream and Oppo 205.
128x128sandydennis11
georgehifi's avatar
georgehifi
10,312 posts
 
Wouldn't worry too much about it, it sounds like it's just the tinkling sounds, different rates of contraction of the heatsink (alloy) that bolted to the chassis.

Cheers George  
davidpritchard's avatar
davidpritchard
866 posts
 
I have this amplifier and it does make noise when cooling. I never turn it off except for system changes. It sounds better when always left on.
Putting in a Synergistic Research Blue fuse makes a nice improvement and is a one minute job.

David Pritchard
lacaed
2 posts
 
FWIW, my x250.5 and my current XA60.8s made that kind of noise on cool down.  I talked to both the dealer and to Passlabs both said don’t worry.
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