Retro Recorder is an iPhone application created by McDowell Signal Processing, LLC (dba McDSP).

McDSP is an innovative Silicon Valley audio software company founded in 1998 by Colin McDowell. Beginning with the release of pioneering equalizer plug-in FilterBank for the Pro Tools digital audio workstation, McDSP has continued producing industry acclaimed and award-winning software titles for the pro audio market.

McDSP also licenses audio algorithm IP for use in many other fields including gaming audio and iPhone application development.  If you are interested in licensing McDSP algorithms, please email us at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .