The Carl Martin Rock Drive is a 9V-battery-powered pedal designed to emulate the sound of a hard driven tube amp, responsive to individual playing dynamics without altering the basic tone of the guitar.
The Attack (mid) and Edge (treble) controls give access to a variety of flavours within this type of distortion style, without compromising sonic quality.
The Carl Martin Rock Drive is capable of emulating tones from a smoking Twin to a beefed up JCM 800, without low-string mush or raspy highs.
The Carl Martin Rock Drive is true bypass and features an AC adapter jack.

The Carl Martin Crunch Drive is a 9V-battery-powered pedal designed to emulate that “hard to get” crunchy blues tone from a good tube amp.
The Attack (mid) and Edge (treble) controls give access to a variety of flavors within this type of distortion style without compromising sonic quality.
If subtle crunch is your thing, you’ll find plenty of cool chord and light solo options here which – regardless of EQ – always sound crisp and lively perfect for jangly chords and light blues soloing.
The Carl Martin Crunch Drive is true bypass and features an AC adapter jack.