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RE: The Mac 275

Some of the comments on the youtube page complain about the use of printed circuit boards instead of point-to-point wiring, claiming that printed circuit boards are less reliable in the face of the thermal cycling you get in a tube amp. Given how many Dynaco tube amps (which use circuit boards for their driver circuits) are still working, is there any validity to the complaints about McIntosh using them? (I am wondering, could ROHS-compliant, low-lead solder be a contributor to unreliability in such use cases?)

Just curious.

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