Analog Man Bi-CompROSSor Compressor – Rev5 circuit with MIX control is new 2017 version of the Bicomp with 5 knobs in a row (MIX and ATTACK knobs). This is pretty much the same as REV4 with the addition of a MIX control, which can go from full dry (no compression) to full wet (same as REV4). Mixing in dry gives you the attack of the note, which is compressed away normally, if you want to hear that. When set at full dry, the pedal becomes a clean boost/buffer pedal and makes pedals after it sound really great, with more presence.

The Analog Man Bi-CompROSSor Compressor are two very different compressors in one enclosure. The CompROSSor™, a hand made pedal based on the Ross compressor and the Juicer, a hand made Dan Armstrong™ Orange Squeezer compressor clone (old orange box).

The Ross compressor is a highly sought after pedal that has been out of productions for a very long time. It is considered by many to be the grand daddy of all compressors with vintage example costing big dollars. The Ross compressor was an improved circuit that followed the original MXR Dyna-Comp. The Dan Armstrong Orange Squeezer has a very unique attack and is best remembered for players like Larry Carlton plugging in the little box into his Gibson 335!

From Analog Man
The 30+ year-old original Ross Compressors are about impossible to find and VERY expensive. This led us to first come up with a clone which we made by modifying a Dunlop built MXR Dynacomp reissue, starting in 1999.

In the year 2000, there were no Ross Clones being made. So with the help of Alfonso Hermida (Zen Drive), we reverse-engineered an old Ross, and have been making our own version, the Analog Man compROSSor pedal, from scratch ever since. Our comprossors soon became extremely popular and had a long waiting list. So others came out with Klones of the Ross compressor, which is easier now, as all the info to build one can now be found online. But just building from a recipe will not give the same results as a cook who knows how and why to include or discard certain ingredients, and add the perfect seasonings. So we are staying a few steps ahead of the others, you will see the differences in quality and features below and can hear them even more. We came out with the ATTACK control in 2001, which one of our COMPetitors finally added in 2005 after years of saying it was not needed. But seems he only added half of an attack control- it only goes one way from the stock setting. Ours is able to ADD or SUBTRACT from the stock setting, which we put in the middle of the range. We also added the MIX control in 2016 to allow clean blend (parallel compression).

Way Huge had made the Saffron Squeeze pedal in the mid 1990s, which is a hot-rodded Ross compressor. These are very popular and tend to sell for even more than an original Ross compressor. Different transistors and a few different capacitors were used, and some capacitors are added. We were able to offer our comprossor with these specs by special request if you are familiar with the Saffron Squeeze. But the newfangled transistors used in the Saffron Squeeze are not as steady and smooth, so we prefer not doing 100% SS specs.

We have slowly been improving our Comprossor every year, and are using some of the Saffron Squeeze improvements in all of our comprossors now. This makes them a little more open and less squashed than the other comps on the market. We have also tuned the low and high end of the pedal, so as to keep your signal from being changed. With the MIX knob all the way down, you cannot tell if the pedal is ON of OFF, the sound is not changed at all.

We always use New Old Stock (NOS) CA3080E chips in our comps, I don’t think any other well-known brands are still using them. We have some original 1978 RCA chips that I have been saving for years, so I am putting them up as an option. I don’t think they sound much different, but they are the exact same ones used in the old grey Ross compressors so it’s pretty cool to have one in your pedal.

In April, 2013 we came out with REV4, which improved the COMPROSSOR (left side of BICOMP) circuit. Mike had been playing in a band for a few years, and noticed that SOME pedals on his board would not drive a load well, they would get dark and dull, due to a bad (high) output impedance. This is easily tested by running pedals into something like a low impedance volume pedal, with a switchable buffer between them. The ARDX20 with the delay level down is excellent for testing – when ON it’s a great buffer, when OFF it’s true bypassed. To test a pedal, simply turn the buffer on and off and listen for a change in tone. With most pedals, like our Chorus, Juicer, etc, there is no difference – they can drive the signal to your amp through long cables or volume pedals no problem. But the Comprossor sounded dull when the buffer was removed. The original Ross, Dynacomp, and all the other Ross clones do the same exact thing- they really need a buffer after them to sound good.

Also these pedals don’t have a very loud output, especially when you hit them hard, for example with humbuckers or a boosted signal. One other problem all these pedals have is phase reversal – they flip the phase of your signal when you turn them ON. This may not be a problem for most people, but if you split your signal and combine it, or run into two amps, the out of phase signals will cancel and you will get a VERY thin sound. Also, for use as a clean boost, there was too much compression even with the SUSTAIN pot all the way down. So we reduced the minimum compression amount, without changing the maximum amount. Now the pedal is more usable as a clean boost, and also sounds great left on all the time as a tone sweetener/buffer. It’s great stacked into dirt pedals, chorus, vibes, etc now. With these problems fixed, there is no need for a blend knob, you should be able to keep your pure tone without the need for additional circuitry.

New 2017 REV5 CompROSSor with MIX control for Parallel Compression now available!