Monday, April 03, 2017
1987 Ensoniq ESQ1 Digital Wave Synth SN ESQ-28817-D
via this auction
"This a great working vintage keyboard/synth/sequencer package. (note one of the photos shows the low battery in the display), the battery was just changed out with a fresh alkaline pack at the time of the listing, that should last for years. sounds great, and is in VERY nice clean condition. no damage, great for the stage, recording, etc."