Got a 1974 VT-40 4x10 and it is the best sleeper amp out there. Gives fat fat tone and can dial in Fender tones and some Marshall. Tubes are cookin at nearly 600 Volts, so this baby is loud and clean, but at 60 watts still breaks up at 4. Redone totally by Todd Sharp of Nashville Amplifier Service (props to Todd who did a wonderful job and is a great guy and a great player to boot). Speakers replaced with 2 celestion vintage 10s, 2 jensen Neo 10s. Todd put in an accutronics reverb w/ transformer and now has completed the package. I have bought and sold boutique amps because they didn't have the tone and versatility of this amp...running 7581As V series amps- Who has them and who loves them??? Any mods, upgrades for performance? Suggested things to do to improve the already good tone? Anybody play through an old V-series cab??