Buy this combo package and save nearly $20 off the cost of purchasing and shipping these three items separately... Our flagship preamp model combines exceptional phono preamp performance with three additional aux level audio inputs, then adds an variable output level control. Soft-touch switches control power on/off and source selection. While off, the TC-754 even remembers what source was last selected and reselects it when powered back up. The output level control allows connection to a power amp either directly or through an equalizer; or it can simply be used to fine tune the audio level sent to your computer sound card or receiver. Spectacular RIAA equalization accuracy and a S/N ratio of 85dB make the TC-754 our best performing phono preamp; its additional features are extra icing on the cake! Our optional 1 amp regulated premium AC adaptor (twice the current of the standard adaptor) is also included... Looking for a simple and quick way to connect your turntable and preamp to your computer for recording or listening? It doesn't get easier than this. Simply plug the TC-754 into our TC-ADUSB, connect its USB cable into your Mac or Windows computer, and go to it! Either analog port (one RCA, one 1/8" mini-plug) can be used for input; the second port provides a pass-thru signal to feed to your stereo receiver or amp, so you can listen thru your stereo and computer simultaneously. Unlike many other USB audio adaptors, the record level controls and meters in your audio editing software will work with ours. Our TC-ADUSB FAQ page has everything you need to get started digitizing your records to MP3 or CD-Rs.