Ampeg V4 and V4B

I love this old beast. Sure it has a couple drawbacks, starting with being so cumbersome out of its case. But its pretty much change the caps and clean everything and they're ready to keep rockin'. I like the way it sounds as a guitar amp, 150 Watts for your full stack. Its not uncommon to find these still conducting well with Sylvania or Magnavox tubes. If the standby light is not working, its either the bulb or R54 and maybe the diode.