2. amps-preamps
  3. 190634-138624

Amp showing its age?

Before getting into details, just the bottom line: can an SS amp, well into its second decade, begin raising its output impedance and/or dropping its peak current capability? Because mine certainly seemed to be doing one or both, so I have just replaced it, and now the speakers are again obedient.

 

hickamore
hickamore OP
738 posts
 

@ozzy62  Appreciate the reassurance on Coda. Though the Parasound really was losing its grip. I never upgrade without provocation. Too many other costly priorities in life.

@stringreen  LOL. Maybe I should have bought Ayre way back when.

jimmyblues1959
185 posts
 

@hickamore. God willing you'll live a lot longer!  😊

waytoomuchstuff's avatar
waytoomuchstuff
1,255 posts
 

Lots of words of wisdom here.

 

Well dine.

bluorion
502 posts
 

I have a Denon PMA-757 integrated amp from 1985 that's still going strong. I had it serviced a few years ago, cleaning, replacing a few bulbs but that's it. Sounds great. It's powering a pair of Canton Karat 200s from 1986. 

pcrhkr's avatar
pcrhkr
318 posts
 

My guess would be one or all. Power switches build up carbon from arching and become resistive after decades.  Electrolytic power supply capacitors, final stage driver transistors,  new output transistors.

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