I just put up a lengthy description, with photos, of how I modified a Frontier Design Tango (older 20-bit version) ADAT audio interface for DC output, allowing it to be used with software such as MOTU’s Volta and Expert Sleepers’ Silent Way to control analog synthesizers. It’s able to control my VCOs over nearly a nine-octave range, so its performance is much better than the MIDI-CV converter I built awhile ago. (Somewhat ironically I submitted the artwork for having the PC board fabricated for that project the day before Volta was announced.) This project consumed several consecutive weekends, and documenting it took nearly as long, so I’m also quite pleased to have it all finished. I went to the lengths of making a demonstration video to cash in on the Expert Sleepers Silent Way bounty demonstrate how well the system works. The video is embedded at the bottom of the page.