Alesis HR-16 drum machine The top slider knob broke off. It is the volume, you can still adjust it though. It has been in a closet box for about 15 to 25 years, honestly can't remember the last time I used it, it was so long ago. It powers up and seems to be all working but I have not hooked it into an audio system. I want $80. for it and this is a fair price based on the condition and they go for much more on Reverb.com Whom ever buys it can return it in the first week if there are any issues and I will return the money. This does not include if someone is modding it and it goes wrong. I understand there are many different mods for this thing now. Don't email me for a lower price, it won't happen. Only email me if you actually want to buy it otherwise don't bother. Cheers