The MXR M-169 Carbon Copy Analog Delay
Review by Jay Blanchard (Spitting Out Teeth)

It wasn’t really my intention to buy an MXR Carbon Copy analog delay. I had been reading a lot about the new Boss RE-20 Space Echo pedal, and I was convinced that I needed one so I went to Daddy’s music shop to try it out. While I was there, I noticed the Carbon Copy and thought it wouldn’t hurt to have another delay/echo unit to compare it to.
While I didn’t dislike the RE-20 (it’s actually a really cool pedal; Boss is doing some amazing stuff with COSM), it just didn’t compare with the lush, warm analog tones of the Carbon Copy. I thought the RE-20 was going to sell me with the weird tones, but the Carbon Copy is a fine pedal for experimental music in its own right, with some wicked self-oscillation (more on this later).
After playing around with both pedals for an hour (and severely freaking out the rock dudes at Daddy’s with my spacey noise & drones), my decision was made—the RE-20 stays, the Carbon Copy is going home with me.
I’ve had the pedal for a couple of weeks now & I’ve been able to test it out pretty thoroughly with everything from clean guitar slap delays to doom metal riffage to running an analog synth through it & a half-dozen other pedals. As a result, I think I’ve discovered most of its strengths and limitations.
PROS:
Gorgeous analog tone
Incredibly simple to use
Small footprint
Plays well with others
CONS:
Hard to access modulation controls
Blinding LEDs
Quality control issues
Not “true” bypass
I’ll go into a bit more depth on each of these, staring with the pros:
TONE: For a $150 pedal, this thing sounds damn good. I never really considered buying an analog delay before because A) they were too expensive (AD-999, Moogerfooger) and B) I already had my DD-20 Giga Delay. After five minutes with the Carbon Copy, I realized that my DD-20 would be relegated to only effects work and looping from now on. The DD-20 just sounds so sterile now compared to the CC.
EASE OF USE: Three knobs and a button. You have controls for mix (wet/dry signal), regen (number of delay repeats) and delay (timing of delay, from 1-600ms; most analog delays only go to 300ms). There is also a small button to activate the modulation, which adds a nice, subtle chorusy sound to the repeats. The only noobie issue may be with learning the limitations of the settings before the pedal goes into wild self-oscillation. You’ll learn quickly though on the first time you set the Regen to max and the Delay to min—it’s LOUD! That said, once you learn the boundaries of the oscillation, you can play around them to create some really cool spacey sound effects, great for experimental ambient/drone recordings.
SMALL FOOTPRINT: Most analog delays (such as the previously mentioned AD-999 and Moogerfooger) are large pedals that take up a lot of space on the pedalboard. The Carbon Copy is anorexic by comparison—it’s the same size an MXR Phase 90, which is about 75% of the size of an average Boss pedal. The CC also looks nice too—an eye-catching dark green paintjob with blue sparkles mixed in.
PLAYS WELL WITH OTHERS: I ran the Carbon Copy in the second spot of a pedal chain which included an Effector 13 Synth Mangler, the DD-20 and a Holy Grail reverb. I was expecting to have all of the analog sucked dry by having it in a chain with a bunch of non-true bypass digital pedals, but surprisingly most of the nice warm attributes of the CC’s tone were retained.
Sounds pretty great so far, huh? Well, here are a few of the cons:
MODULATION: While the Carbon Copy offers modulation, it probably would have been better if MXR just left it off completely & saved a few bucks. While the modulation on/off switch is conveniently located on the front of the pedal, the controls to set the modulation amount are housed INSIDE of the pedal (one of the payoffs of such a small pedal is limited real estate). You can adjust the amount/rate of modulation by adjusting the internal trim pots with a jeweler’s screwdriver. Kind of a pain, especially for experimental music where you may want to adjust modulation on the fly.
Also, even once you crank the modulation to max, it’s still really subtle—nowhere near the nice warbly effects you get with, say, an Earthquaker Devices Disaster Transport. You can always remedy this by just adding a pitch shifter and chorus pedal into your mix though.
LEDs: Ok, this isn’t necessarily a con for some people, but the blue LEDs (there are two of them) on the Carbon Copy are bright. No, not “bright”, BRIGHT. Blindingly bright, to the point that they will light up a small darkened room. Like I said, for some performers this may be a plus, as it gives you a better view of your board at shows. But for performers who rely on a dark ambience for their shows (or just don’t like to be blinded while tweaking the pedal during rehearsals/recording) might find it annoying; I know I sure do. My solution—just put some small pieces of masking tape over the LEDs. You can still see that they’re on, but it tones down the brightness quite a bit.
QUALITY CONTROL: Apparently a lot of users have had to return their CC’s due to issues with the Regen control—it goes from a single repeat to 6 or 7, instead of a gradual increase. This wasn’t a problem with mine, but I figured I’d mention it as it seems common. A good way to avoid this is to demo & buy your pedal at a local music store instead of online. I haven’t really found the price on this pedal to be much better on Musician’s Friend or Amazon anyhow.
BYPASS: There’s a lot of controversy as to whether this pedal is “true bypass” (i.e hard-wired so that you don’t lose tone). MXR apparently claims it is, while all the tech geeks out there are saying that it isn’t—while it uses a bypass method it isn’t “true” true bypass. Whatever. It sounds damn good to me and I don’t notice any tone loss at all, especially when compared to my DD-20, which is a real tone sucker.
So that’s it. The cons really aren’t that bad in my opinion, and the syrupy analog sounds more than make up for it. And it’s great for all types of music, from doing cheesy U2/Edge covers to Floydian echoes to spacey experimental soundscapes. If you’re looking for a true bucket-brigade analog delay pedal at a relatively low price, you can’t go wrong with the MXR Carbon Copy. Any questions or comments can be followed up in the forums here
MSRP $149.