Radio Design Labs - TX-1W - RDL Music on Hold Amplifier - 1 Watt<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>To Feed Audio into Telephone Equipment Music-on-Hold Input</li><li>Adjustable Audio Level</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31YAdDDPDNL.jpg" noproxy>