“Offering a rare and cool Sequential Circuits Studio 440 Drum Machine Sampler Sequencer. From the late 80’s early 90’s. Very low serial number. Has been very well kept, only a little evidence of use or wear. Lights up and appears to shift settings and functions. I am not an expert so am unable to test reliably. Person I got from says was tested thoroughly but I cannot confirm. It looks really clean for being 30 or more years old. Screen clear as in pics. Looks like one slider knob tip not original. All knobs look original. Has power cord. No case opr manual. Will pack very well for a safe trip. This item is being offered SOLD ASD IS condition, no refunds or returns, be aware of this.”
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Sequential Circuits Studio 440
“Sequential Circuits Studio 440. Made a string of hits in the 80s if you are a collector. Condition is “For parts or not working”. With flight case but no manuals. ”
“Excellent physical and working condition. Includes updated and installed OLED screen and SD Card reader.” 
“Sequential Studio 440 in amazing condition with many upgrades
“Sequential Circuits Studio 440 in very good condition and perfect working
“For sale is a ultra rare, Sequential Studio 440 drum machine/sampler/sequencer. Led screen works! Rare find here. It shows signs of wear, Multiple pictures are there to show unit condition. Data entry fader knob is missing, the data entry fader works, I use a toothpick, a fader knob is .99c on the bay. Also the floppy eject button is missing, also a toothpick works, I’m sure you can be more creative than me. Knobs will be removed for shipping. They slide on and off. Firmware is 2.10 feb 1988. Unit is very clean on the inside as pictured. I will package and ship this unit knowing a rare gem is inside.”