Yes, all sources that output analog stereo line-level signals or stereo audio optical digital signals may be used, cable-connected to the BTA 20 transmitter. Digital signals must be in PCM format. So if you have a CD player or an FM radio, you can connect the BTA 20 to it, and transmit to your Soundgear (or to other Bluetooth headphones that support the format). Please note that record players need an additional preamplifier to work this way. Of course a TV set can be connected as well, either via optical digital PCM output, via line outputs or via headphone output.