I have had the exact opposite experience. I have a 1970 (no MV), a 1972 and 1974 both with MV knobs.redchapterjubilee wrote: ↑Mon Aug 20, 2018 6:06 amSilverfaces all seem to sound the same regardless of master volume or 100/135 w. Heavy, loud, clean.
The 1970 100w is the most “transparent” of the three. Lots of bass with a hefty serving of mid-highs. Not a lot of tinkly highs. Because there is no MV, I find this one pretty easy to find a good level in the room.
The 1972 100w is BRIGHT as hell with almost no bass freqs. Kind of like a tin can. Sounds perfect for that spaghetti western “total scoop” tone.
The 1974 is 120w and about 20 pounds heavier. I can believe it’s 100 pounds. This amp is clean and bassy. Sounds like a blues amp, almost no highs and hardly any mids. Also, I can turn the gain and master volume both to 10 and the tone is still clean.
In summary, I need all three together to get the correct surf tone!
The master volume turned up to 10 basically makes the adjustments identical to those made without one.