This is a Yamaha Analog Delay Model E1010, a vintage 2U rack-mount analog delay effects unit made in Japan. The unit powers on as confirmed by the power LED illuminating during testing (see photos). The front panel features controls for Input Level, Bass, Treble, Delay (10–300ms), Feedback, Mixing, Frequency, Modulation, and Depth, along with an LED input meter and footswitch jack. The rear panel includes 1/4" input and output jacks (Direct and Delay outputs at -20dB), Ground switch, and fuse holder (0.5A 250V). Full functional testing beyond power-on has not been performed; sold as-is. Cosmetic condition shows typical wear including light scratches and scuffs on the chassis consistent with studio/rack use, and a small piece of tape residue near the power switch. Rear label reads: Model E1010, 120V, 12W, 50/60Hz, Nippon Gakki Co. Ltd., Made in Japan, Serial No. 8565, Passed HJ82. Unit is UL Listed (925U Sound Equipment). Power cable included as shown in photos.