Budget Wireless Audio from Monoprice
The receiver end of the Wireless Speaker Transmitter has a 2x30-watt amp and connectors to hook up surround speakers or a stereo speaker pair for a DIY 2-zone multiroom system. A 3.5mm input and volume knob give you local control (a remote is also included for that purpose) so you can hook up an iPod or other source directly to the receiver. Another possible use for the system is to make your subwoofer wireless — as long as said sub has a speaker-level input. Good news: If you order 50-plus Wireless Speaker Transmitters, they only cost $82.24 each!