Re: Armstrong 626 problem at high volume.
The pre-amp regulator was not overly trouble-some but we did have a few failures
the pre-amp power decouplers could do with replacing after all they may be 40 years old now
I would replace these as a matter of course
I agree with Wham re the sound but the design did show Armstrong were learning re getting rid of plugin boards The physical looks were clever and deceptive re the depth
Trev
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