This auction is for a used ADA PTM-850 4 zone amplifier. These were removed from a recent install that we updated. The units were installed in a temperature control rack and have been used sparsely for the last few years. at the time of removal. They were operating and working fine on all channels. There are two units available total, and the prices for each individual unit. Are the units have some minor scuffs and scratches on the tops, but are in fairly good shape. All auctions for used equipment are as is and returns are not accepted. All items will be packed and shipped via UPS ground at the UPS store Let me know if you have any questions and I’ll do my best to answer We are selling lots of used equipment removed from recent installs, so please take a look at our other options!