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In Reply to: RE: How would you guys feel about the new McIntosh MC275 posted by E-Stat on October 27, 2016 at 09:00:24
...Finals on circuit board mounted sockets is what's not to like. Even the best circuit boards are susceptible to heat damage and solder/socket terminal connections prone to fatigue failure...esp if the owner is a tube roller. While a circuit board does have the advantages of layout consistency and lower assy cost, long term reliability is usually compromised.
Follow Ups:
...long term reliability is usually compromised.
Maybe some day I'll experience trouble with my 2001 VTL amps which take that approach.
Meanwhile, I'm enjoying a decade and a half of higher quality sound. :)
I'm enjoying high quality sound from 6 decade old amps with original sockets (but many new parts). You are quite fortunate to have trouble free decade old circuit boards. IME, 10 yrs is about the time period where things begin to happen. Have you recently examined the trace side of your amp's boards in the vicinity of the finals? ;-)
...(but many new parts).
That's the point! I trust you upgraded the quality of all those parts at that time. :)
Have you recently examined the trace side of your amp's boards in the vicinity of the finals? ;-)
A couple of years back, I had one output capacitor fail. Here's what the board looked like then:
Clean! You are indeed fortunate. But what's an "output capacitor"? This is a power amp, right? So output transformer but no output capacitor unless it's output transformerless/cap coupled output.
Coupling caps. Current version uses silver Mundorfs.
Do your amps run balanced connections?
No, way too old for consumer oriented equipment to have that feature...at least most of it. I have a pair of ancient Stromberg Carlson amps awaiting restoration that do run 600 ohm balanced inputs. Going to be tough finding something capable of driving them adequately.
Wow, that is tough to drive. The VTLs are 137k ohm.
I'm with you regarding Octal sockets on PCBs. It's a prescription for trouble. 7 and 9 pin miniature types on PCBs are OK, as strain levels are within reason.
Eli D.
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