"Learn from your favorite cassettes ..."

Since the advent of shred, there have been products to help the guitarist reverse engineer impossible licks. The Riff-O-Matic foot controlled sound microscope is just such a device. Presumably you could pop your copy of Marching Out into this baby and be on the way to deciphering 32nd notes. This practice tool, available from The Rock Shop, is a similar but unrelated predecessor to the Akai Riff-O-Matic.

Ad scanned from Guitar World, June 1989.