The Charon Overdrive is a faithful clone of the Ibanez CR5 Crunchy Rhythm pedal, which was originally designed for rhythm guitarists but can be used for a variety of applications. The CR5 was released in 1989 as part of the Soundtank series and continued production until 1992.

The drive section of the CR5 is similar to the DS-10 Distortion Charger from 1986. It utilizes a differential transistor pair instead of an op-amp for the initial gain stage. This low-tech op-amp allows for adjustable gain using a potentiometer in the feedback loop. While Ibanez only used differential pairs in a few circuits, such as the BD-2 and OD-3, Boss also incorporates them in some of their circuits.

After the differential stage, the signal is hard-clipped using diodes to ground. However, this is where the similarities with the DS-10 end. The signal then goes through an op-amp stage that boosts bass at around 108 Hz to reintroduce some low-end. Following this, there is a basic hi-cut tone control, volume control, and output buffer.

The Charon Overdrive faithfully recreates the CR5 circuit without any modifications, except for changing the pinout of the transistors to the USA E-B-C convention (2N3904, 2N5088). This ensures compatibility with modern components and allows for easy replacement if needed. Overall, the Charon Overdrive is a clone of the overlooked gem, the Ibanez CR5 Crunchy Rhythm, offering the same versatile tone and functionality.

Summary created by AI from the original source.