Palmer PDI-06-16 Ohm, Load Box, Format: 9.5''/ 1 RU, Adjustable in 6 steps (100%, 70%, 50%, 35%, 25%, 18%), Reduces the volume of a guitar speaker at full saturation of the tubes, Made for 16 Ohm loudspeakers, Bypass/ attenuator switch for fast switching between full and reduced output power, Input: 1x 6.3 mm jack socket, Output for loudspeaker 1x 6.3 mm jack socket in parallel, Output impedance: 16 Ohm