Palmer PDI-06- 8 Ohm, 9,5" 1U Load-Box, switchable in 6 steps (100% 70%, 50%, 35%, 25%, 18%), reduces the volume of the guitar speaker with full tube sound, especially for 8 Ohms or 2x 16 Ohms cabinets, Bypass/Attenuator to switch between full and reduced power, Input 1 x 6,3 mm jack, output for speaker 2 x 6,3 mm jack, output inpedance 8 Ohms