**In general, Class D amps are unservicable. Or at least they will be.
And here's the irony: Around 6 ~ 8 years ago, I was considering a
different occupation (apart from servicing audio equipment). I was in my
late 50s and found that the preponderance of surface mount components
and, in many cases, the complete lack of schematics for some products (I
had an NAD on the bench, that used an ICEPower module, for which no
service data was available, thus requiring an entire module
replacement). In the last few years, I've seen these trends accelerate.
Given the cost of Class D implementation is rapidly falling in cost, I
predict several things:
* Class D amps will not be worth repairing. Even expensive ones.
* High end manufacturers (like Rowland) that have embraced Class D will
* High end companies like ARC will likely survive, because sufficient
listeners will continue buying linear amplification.
The upshot for me is that, despite being at the end of my working life
(I'm 67 years old next month), I have never been busier. Most of the
guys in my business have switched to more profitable pursuits, or
retired. I get repair jobs in from all over the country (Australia).
I reckon that Class D amplification will sweep all before it. EXCEPT for
niche stuff. And there will likely be demand for that for a very long
time. Hell, I've started repairing cassette decks again! YIKES!
Postscript: Ya gotta love hipsters. As a group, they have pushed the
revival of old stuff along very nicely. I tips me hat to them.
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