Hold on to your socks! I have for sale a one owner (me) WISA air pump. In this sale, I'm including a nice enclosure, built by me, specifically for this pump, that can be used in the same room with little to no affect (depending on how far it is from listening seat). Also I'll include a MEDO AC0110, rated at 14 psi that I purchased, used, less than 6 months ago for some tesing. I put a 3 prong plug on it so you won't have to. I paid $80.00 for this item. The WISA, I purchased in 92' from Galen Carol to drive my ET 2. I've never had one problem with it. It has always been in a climate controlled environment. I've even replaced the cotton filter on an annual basis. I hate to see it go, but I probably will never use it again. I have the original box for the WISA. I will pack everything to withstand a drop-kick from FedEx. I have the original receipt if that's necessary. You will not find a nicer WISA (if you can find one at all) anywhere! I will ship antwhere in CONUS for a flat $20.00. PayPal is on buyer, 3%.