When I was in High School, they had an Ampeg combo amp. It had the 2 speakers in a vertical configuration, I'm pretty sure they were 12's. Not a lot of knobs, 2 channels, I think...No master volume...the details are a little fuzzy, that was a lot of brain cells ago... The reason I ask was it broke up so sweet, really nice distortion. I graduated in '75, so the amp was early '70's. Thank you.