Valeton GP-100 multi-effects processor with IR + amp/cab simulation + effects, 198 presets, with 9V PSUmulti effects processor with IR + amp cab simulation + effects, 198 presets, with 9V PSU,The Valeton GP 100 Multi Effects Processor is an impressive all rounder. It is an amp, effects unit and even a recording interface. The GP 100 is the first in Valeton's GP series. Inside the GP 100 Valeton loaded a powerful HD digital modeling system, delivering organic living tone and over 140 effect selections including 45 legendary guitar bass acoustic amp