Improved circuitry featuring the JRC4558 IC yields the ultra-smooth, creamy, dynamic overdrive so sought after by guitarists. Overdrive and output level controls adjust the intensity of overdrive and output volume, while the Hi Boost/Hi Cut Tone control adjusts the brightness from warm and smooth to sizzling hot.
While the M-OD808 may have been the first overdrive circuit of its kind, it was the OD-9 that cemented this sound in the history of Rock & Roll guitar.
Looking at the OD-9's circuit, you'll realize that this is not some redesign being cleverly marketed as a reissue – this is THE original OD-9 (TS-9) circuit, yet with the addition of true bypass switching. Even the PC board is the same one that Maxon has been using for the past 30+ years, complete with empty slots where parts for the FET switching circuit have been left out!
Like the original, the current production OD-9 features the NJM (JRC) 4558D Op Amp – an essential component for authentic “TS" tone. The NJM is smoother sounding and less compressed than other Op Amps, offering superior sound quality with low noise.
The absence of the FET switching circuit gives the OD-9 some added output and a slightly more open sound than the M-OD808, making it perfect for the classic rock tones that it helped to define.