” Up for sale is an Ensoniq SQ-R Plus synthesizer rack. I just put in a fresh battery for the memory back up. It should be good for up to 5 years or more. Really versatile synth. Rack version of the SQ-1. ” Link
“Ensoniq SQR. Excellent condition and perfect working order. Comes as pictured. ” Link
“For sale is a Vintage Ensoniq SQ-R Plus 32 Voice Rackmount Synthesizer in good working and cosmetic condition. There are no deep scratches on the casing, but there are some visible scuffs on the top casing as seen in the pictures. I replaced the battery a few days ago and have ran daily tests to insure its good working order. It includes the original manuals, box, and power cord!” Link