Feature: 1. COMPACT AND DURABLE: Phonograph preamplifier is housed in a metal case for rugged durability. Compact structure design, easy to carry. 2. MULTIPLE CONNECTIONS: Supports 2 RCA (L and R) inputs, 2 RCA (L and R) outputs, 1 1/4in output to meet different sound equipment connection needs. 3. CONVERT SIGNAL: The phono turntable preamp converts phono signals to line level signals, providing excellent sound quality, plug and play. 4. LOW NOISE: This phono preamp utilizes an ultra low noise operational amplifier and provides independent output volume control. 5. RIAA EQUALIZATION: The PP500 phono preamplifier equalizes the turntable signal according to RIAA specifications to deliver premium sound. Specification: Item Type: Phono Preamp Material: Iron Shell Type: RCA Connector Impedance: 47kW Output: Type: RCA and 1/4in, Stereo Connectors Impedance: 50W Frequency Response: RIAA THD: 0.06%typ. at -40dBu/1kHz Gain: 35dB SNR: 68 dBu at 0 dBu, A Weighted. Package List: 1 x Phono Preamp1 x Instruction Manual 1 x Adapter