S/H Free the Tone Overdriveland

Overdriveland consists of two main sections. The first is the Normal Channel circuit, which includes the Tone circuit (including the EQ ON/GLASS switch) and Gain characteristics adjustment with the ROCK/JAZZ switch. The second section is the Drive circuit. When the Drive Channel is selected, the signal passes through this Drive circuit before flowing into the Normal Channel circuit.

The "EQ ON/GLASS" switch controls the equalization function of the Normal Channel. When set to "EQ ON," the "TONE" circuit is activated, allowing you to shape your tone. Selecting "GLASS" bypasses the "TONE" circuit, giving you a glassy tone reminiscent of turning on the Bright switch on a Blackface Fender Vibroverb.

The "ROCK/JAZZ" switch adjusts the frequency response and gain settings of the Normal Channel. The "ROCK" side is designed for shaping your sound with increased gain, while slightly reducing the gain in the low-frequency range to prevent excessive low-end volume that can cause the amp's input stage to distort. The "JAZZ" side, on the other hand, lowers the overall gain and is designed to bring out the richness in the low-frequency range.