Fair enough. I told him I thought it ought to be louder. This is based on over 40 years playing various amplifiers and comparing to to a similarly rated Acoustic model 123 I currently have.
This guy has been doing repairs for a shop I trust for upwards of two years, says he's been at it (both tube and ss) for about 30 years, I figured he'd know what a 100w amp should sound like; I think he mostly checked values against the schematic and called it good (not a bad approach).
"Should be louder" is perhaps nebulous, not sure how I should have languaged my problem for a different result.
Mike

Hi all-
I got an Acoustic model 134 guitar amp used, took it directly to the shop since the output seemed low, actually very low.
I got the tech the schematic, got the amp back and it acted the same; tech says all within spec. Asked about cap replacement, said he didn't do that unless it tested bad. I thought this was foolishness based on the filter cap probably being near or at the end of it's service life. Amp is probably mid-70s product.
Now I not only have the same low power output, but I get I think 60 hz hum upon power-up, channel and master volume controls set at 0 or turned up, resolves itself after 30-40 seconds. This symptom just started.
Any ideas beside take it to a diffferent tech?
Thx-
Mike S