Hi...thanks for answer about Marshall amp... I have 2 sounds in my DX7 and DX21 but without guitar amp I don't have the sound what I want... I saw in Marshall amp Presence and Resenance. For these effects I want DSL40C. One of my friends had an amp from Laney but he forgot the model..I saw many amps from Laney but hovewer, I want Marshall for my DX.