I bought the ART TPS a year ago and it's adequate for DI'ing bass & gits. Equipped with a "Variable Voicing" function that s'posedly provides amp/instrument modeling. However, when function is engaged and gain is boosted by 6db's or more, sound artifacts are introduced that arebarely noticeable but still apparent upon critical listening. No discernible coloration of signal yet if you're looking for that "warmth", this unit severly lacks it.