TEC TC-778 RIAA Phono Preamp w/ 78rpm Equalization Switch and Input RIAA freq response 20hz-20,000hz +/- 0.5dB, S/N ratio; 80dB Channel Separation 50 dB; Subsonic Filter at 10 Hz ground wire terminal; power indicator includes AC adaptor, RCA cable and miniplug adaptor one year defective repair or exchange warranty