Price is per unit This was used in a home audio, DIY speaker setup. Condition is almost perfect with zero sign of commercial use. I bought this as a backup for my active speaker systems but am downsizing a bit. I am interested in a high power home audio amplifier suitable for subwoofer use as a trade. Money up or down. I will offer a 7-day warranty on this piece of gear as I have not used it, it was bought as backup from a longstanding member for diyaudio.com.