Phono Preamplifier / RIAA-Equalizer for connecting your turntable to an amplifier without special phono input. The very low noise phono preamp is suitable for MM and MC cartridges. To avoid hum, the power is supplied via a separate power supply. Details  Transmission: 10 Hz - 20 kHz +/- max. 0.5dB Input Sensitivity MM: 58 mV MC: 6.8 mV Signal to noise ratio: MM:> 84dB MC:> 71dB Input Impedance MM: 47 kilohms MC: 100 Ohm Gain: MM: 40dB MC: 100 dB Power supply: 12 V DC, 200 mA Dimensions: 115x55x130 mm Weight: 1 kg