Fostex attenuator. It is an easy-to-use attenuator that allows you to easily change the volume on the high frequency side of multi-systems, etc. The exterior is good (Hitoshi Kobayashi)
Maintenance information:2023.6.14 sound output confirmed
Accessories: instruction manual
Main specifications: impedance 8 ohms, attenuation of 0 to 40 dB or more, input 100 W (Mus.), shaft effective length 30 mm, W50 x H50 x D71 mm, 0.1 kg