The TC-750LC has the same discrete, time-proven design as our TC-750, but adds an output attenuator control to allow gain reduction when called for. This preamp features better specs than the phono sections built into many component stereo receivers and amps! Careful PCB layout and 1% tolerance resistors resulting in extremely accurate RIAA equalization makes this the choice for use with high-end audio systems and sound cards. If you're looking to make archival quality copies of LPs on CD-R, or just looking to hear that analog LP sound produced without coloration or added background noise, this is definitely worth the small additional cost. Very nice packaging makes this an excellent gift choice for the audio perfectionist. This listing includes our standard 500mA regulated SMPS power supply. See the installation manual PDF (link below) for more info about this model.