Heathkit T4 Guitar Tube Amp Conversion

Dive into the second part of a three-part video series on converting a Heathkit T4 into a guitar tube amplifier. Follow along as the presenter tackles various modifications, including installing a new potentiometer for tone control, relocating the power switch, and addressing preamp distortion issues. Learn about the process of custom-fitting components, rewiring for improved functionality, and troubleshooting audio problems. Observe the installation of a bridge rectifier to increase voltage to the 12AX7 plates and witness the impact on sound quality. Gain insights into testing methods using a function generator and the importance of understanding guitar pickup voltage output. Explore the intricacies of tube amp circuitry as the presenter investigates residual distortion issues, moving from the preamp stage to the beam power tube.