Physically, the MPX100 is a 1U?high, 2?in, 2?out effects processor based on 240 presets that can be edited on a fairly basic, but nevertheless useful level. The analogue I/O is on unbalanced jacks, with a high?impedance input that will accept electric guitars as well as regular line sources. For practice purposes, the left output jack doubles as a phones output, though it's not very powerful.

The DigiTech Vocalist Live 2 is a vocal harmony and effects processor which analyzes the output from a guitar or other instrument to create in-key vocal harmonies on the fly, with the option to select a 3rd or 5th interval above or below.

 

Tested but does not include power cord