Operation confirmed. The exterior has minor scratches and paint wear, but considering it's old equipment, it's in good condition. This is an analog delay/echo unit from a series famously used by Yngwie Malmsteen, a well-known American guitarist. This unit, sold until the late 1980s, is still a current and highly regarded piece of equipment, actively used in live performances and recordings! It uses the MN3005 BBD (Bucket Brigade Device) and F.C.F. (Frequency Controlled Filter) and is equipped with a 3-stage input level switch. Controls include INPUT VOL, REPEAT RATE, INTENSITY, and ECHO VOL. It delivers a thick, warm delay sound characteristic of analog effects. #EffectPedal #GuitarGear