From the Barge Concepts website:
“We’re proud to announce the release and availability of the RC-3 Compressor! The RC-3 is electrically the same as our RC-2
– same circuit, same controls, same features, same price – but in a
smaller package. The RC-3 is built into the compact, 125B-sized
enclosure (footprint is approximately 4.75″ x 2.5″), and we’ve kept the
signal and power jacks on the north end of the enclosure to help save
even more space on your pedal board. The RC-2 (and now RC-3) is the
best Ross Compressor clone on the market, and the new, reduced footprint
makes it even easier to add an industry standard-style compressor to
your rig. “