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Analog delay has a soft, slightly dark echo that digital pedals often chase and rarely match. The MXR Carbon Copy is one of the most common ways to get that sound without hunting vintage bucket brigade units. It sits in a standard MXR housing, runs on a nine volt supply and keeps the controls simple enough that you can dial a useful slap or a longer wash in a few seconds.
What the MXR Carbon Copy analog delay is
The Carbon Copy is an analog delay pedal built around a bucket brigade device chip. Incoming audio is sampled into a chain of capacitors and passed along, which creates a delayed copy of your signal with the gentle high end roll off that players associate with tape and early analog echoes. MXR lists a delay time up to about 600 milliseconds on the standard model, with Mix, Regener and Delay knobs on the face and a small internal trim for the modulation width.
The official product page at Jim Dunlop frames it as a compact analog delay with optional chorus like modulation on the repeats. A blue light on the housing shows when the effect is engaged. The circuit is designed for guitar level signals, though careful players also use it on synthesizers and drum machines with a suitable pad or reamping path.
How the Carbon Copy sounds
Clean digital delays stay bright no matter how long the time is. The Carbon Copy does the opposite. Longer Delay settings get darker and a little grainy in a musical way, which helps repeats sit behind a dry guitar instead of fighting it. The Regener knob feeds delayed signal back into the input for more repeats. Push it high and you get runaway self oscillation that many players use as a texture rather than a mistake.
Holding the footswitch engages a bright modulation on the repeats. It is subtle with the stock trim and more obvious if you open the pedal and turn the internal control. For ambient or shoegaze work that modulation pairs well with the slow, looping feel you hear on records like Drifting In Silence Desolate or the long forms on Place In Time.
Compared with tape echo simulations, the Carbon Copy is less fluttery and more even. Compared with crystal clear digital delays, it is warmer and less precise. That middle ground is why it shows up on so many boards that already have a digital utility delay for tempo locked work.
Carbon Copy vs Carbon Copy Deluxe
The Carbon Copy Deluxe adds tap tempo, a longer maximum delay time, presets and more visible modulation controls. If you need synchronized dotted eighths with a drummer, the Deluxe is the clearer buy. If you want one knob friendly analog repeats for practice, recording and small gigs, the standard Carbon Copy is enough and takes less board space.
Both share the same basic analog character. Choose based on whether tap tempo and presets matter more than size and simplicity.
Who the Carbon Copy suits
- Guitarists building a first serious board. Three knobs and a familiar MXR footprint keep the learning curve short.
- Home studio players. Soft repeats are easy to blend under vocals or synths when you reamp or send a line level signal carefully.
- Fans of dark ambient guitar. The darker trail leaves room for pads and field recordings without harsh slapback.
If you already collect calm listening records, the same taste for soft trails shows up across Dawn and Long The Night Illusion. The pedal is a tool for that mood, not a genre requirement. Quiet night listening sessions also sit well with Away when you want music that does not demand the foreground.
Setup tips
Place the Carbon Copy after drive and before long ambient reverbs if you want clear echoes that still wash out. Run it before dirt if you want the delay itself to saturate. Use a regulated nine volt supply; hungry digital neighbors on a daisy chain can add noise to analog delays. Start with Mix around nine o clock, Delay short for slap and Regener low, then raise Delay for quarter note style trails. For recording, a touch of delay on a send often sounds cleaner than stacking the pedal hard in series with a loud amp sim.
Where to buy
For more home recording tools and quiet listening gear, explore our home studio hub.
