Vinyl record amplifier, suitable for MM/ dual head, high, medium and low three-frequency adjustment. Transmission: 10hz-20khz(+/-0.5dB); 10kHz-50kHz(+/-2db) Distortion coefficient: Less than 0.05% Input sensitivity: MM: 58 mV, : 6.8 mV Signal to noise ratio: MM 83 dB, 70 dB Input impedance: MM:47 , :100 0hm Output impedance: 250 ohm, gain factor: MM: 40dB, : 60dB. Input capacitance: 300pf Input: 1 x stereo , 1x5-pin DIN(DC IN PHO - 300). Output: 1 x stereo , 1x5-pin DIN(DC OUT PHO - 300ps). Maximum power consumption:10 watts Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage:AC110V Color:Black Material:Metal Package Contents: 1 * Record Player Amplifier 1 * Power Adapter 1 * English instruction manual Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.