The Cosmic is a rendition of the Engineer's Thumb compressor: an OTA-style compressor that is NOT a ROSS clone. And it doesn't use any obsolete ICs but the readily available LM13700 chip. There are controls for level, sustain, attack and release. Compared to the original E.T. there are two improvements:
- a JFET input buffer for better single coil response
- both halves of the LM13700 are used in parallel for additional noise reduction
This thing is a lot quieter than the usual ROSS type compressor without any compromise to the squeeze.