Ultra low noise audio performance, provides excellent sound quality. Ultra-compact phono preamp with metal shell, portable and durable. 2 x RCA(L & R) input + 2 x RCA(L & R) output interfaces. With level control konbs for adjusting volume. For converting the phono signal to a line level signal. Plug Type :EU Plug,it applies to Indonesia, Germany, France, , Italy and so on. Mains connection: external power supply,12 V / 150 mA; Input: Type RCA connector Impedance . 47 kW Max. input level -23.5 dBV @ 1kHz Output: Type RCA and inch , stereo connectors Impedance . 50 W Max. output level +11.5 dBV @ 1 kHz System Specifications: Frequency response:RIAA :0.06% typ. @ -40 dBu/1 kHz Gain:35 dB Signal-to-noise ratio:68 dBu @ 0 dBu, A-weighted Input sensitivity:5.3 mV @ 1 kHz Colour:black Material:Metal Size:10 x 6 x 3.5cm Package Contents: 1 x Phono Preamplifier 1 Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.