Source Audio SA161 Dual Expression Pedal evidence plate reverb units were a

plate reverb units were a heck of a lot smaller than a giant room or hall when ambience was needed on recordings

Altogether

at only 49 lbs

Its sound has a very transparent characteristic

Source Audio SA161 Dual Expression Pedal evidence plate reverb units were aThe Source Audio Dual Expression Pedal delivers precision response and smooth action in a durable cast aluminum housing. Dual TRS expression outputs make it possible to control two effects units simultaneously. The pedal is compatible with the very common Boss Roland style (tip hot) expression input. The Range Adjust Knob sets the bottom point of the expression range. Plus, a special Sensor Output connects directly to any Hot Hand, Soundblox,