Mxr Carbon Copy Schematic May 2026

Then, the signal goes back into the . This is the expander . Remember how we compressed the signal earlier? The expander does the opposite. It turns quiet signals down and loud signals up to restore your original dynamics.

Unlike digital delays (which use AD/DA converters), BBDs sample the audio voltage and pass it down a chain of "buckets" (capacitors) at a specific clock rate. The faster the clock, the shorter the delay. The slower the clock, the longer (but dirtier) the delay. Mxr Carbon Copy Schematic

A BBD chip has a limited headroom. If you hit it with a hard pick attack, it will clip into ugly, splatty distortion. The compressor gently squashes your dynamics so the BBD sees a consistently strong, but not too strong, signal. Then, the signal goes back into the

If you ask ten guitarists to name their favorite analog delay pedal, chances are at least four of them will say the MXR Carbon Copy . Since its release in 2008, this bright blue box has become a modern classic, beloved for its dark, smeared repeats, the lush modulation available at the flick of an internal switch, and its remarkably simple three-knob interface. The expander does the opposite

But what is actually happening inside that die-cast enclosure? How does a 40-year-old bucket brigade chip create such a sought-after "vibe"?