M/M Phono Preamp with Power Switch Ultra-compact Phono Preamplifier Turntable Preamp with RCA 1/4-inch TRS Interface Designed with a push button switch and indicator. With two RCA(L & R) inputs, two RCA(L & R) outputs and one 1/4" TRS output. Come with a adapter for convenient usage. Compact size phono preamp with metal shell, portable and durable. Professional for converting phono signal to a line level signal. Ultra low-noise audio performance, offers excellent sound quality. Input: Type: RCA connector Impedance: Approx. 47kW Max. Input Level: -23.5dBV@1kHz Specifications: Package Size: 14 * 9.8 * 8cm / 5.51 * 3.86 * 3.15in Item Weight: 174g / 6.15oz Item Size: 103 * 64 * 32mm / 4.06 * 2.60 * 1.26in Package Weight: 317g / 11.18oz Adapter: Input--110-240V, 50/60Hz, output--12V, 1A Plug: Plug / Plug (Optional) Supply: 12V, 150mA Material: Metal System: Frequency Response: RIAA THD: 0.06% typ.@-40dBu/1kHz Gain: 35dB Signal-to-noise Ratio: 68dBu@0dBu, A-weighted Input Sensitivity: 5.3mV@1kHz Packing List: 1 * Adapter 1 * Phono Preamp Output: Type: RCA and 1/4" TRS, stereo connector Impedance: Approx. 50W Max. Output Level: 11.5dBV@1kHz Come with a power adapter for convenient usage. Ultra low-noise audio performance, offers excellent sound quality. With two RCA(L & R) inputs, two RCA(L & R) outputs and one 1/4" TRS output. Compact size phono preamp with metal shell, portable and durable. Professional for converting the phono signal to a line level signal.