I have a Randall KH-120 head i got cheap off my local craigslist ide like to find a schematic for it and tinker with the gain a little. Maybe remove the clipper LEDs or diodes or roll back the gain structure a little I run it now with the gain knobs at about 8:00
When i turn em up higher the tone gets better thicker fatter but its a little to heavy for my taste if i could roll the gain back some inside i could turn the gain up and get the thicker fatter tone but with a more crunch tone.
Ive read the KH-120 is similar to a few other 120 watt amps the RX maybe a few others that maybe have different styling
Any help would be great!