Usage Tips:Phono PreamplifierPhono PreamplifierRCA LR Input Output Level Turntable Volume Control 100-240VAC PP500SpecificationsItem Type: Phono PreamplifierMaterial: MetalColor: BlackFrequency response: RIAATHD: 0.06% typ. at -40 dBu/1 kHzAdded value: 35dBSignal to noise: 68dBu to 0dBu, A weightedInput sensitivity: 5.3mV at 1kHzList of products1 x Amplifier1 x User Manual1 x Power Adapter+ productNoticedPlease note that the type and old type of this product will be sent randomly, and make sure you will not mind before ordering.ULTRA COMPACT SHAPE: This is an ultra compact preamplifier with metal housing for portability and durability, which has a long service life.Various Connection Options: 2 XRCA inputs (L and R), 2 XRCA outputs (L and R), and 1x 1/4in for TRS output, multiple connection options.SIGNAL CONVERSION: The phono preamplifier can convert the telephone signal into line level signal. The input sensitivity is 5.3 mV at 1 kHz.EXCELLENT PERFORMANCE: Ultra low-power performance -DIO provides excellent sound quality, shiny metal material, sturdy and durable.68DBU AT 0DBU SNR: The frequency response of the phono preamp is RIAA, 35dB boost, SNR 68dBu at 0dBu, A-weighted, very stable.FeaturesMaterial: MetalColor: BlackFrequency response: RIAATHD: 0.06% typ. at -40 dBu/1 kHzAdded value: 35dB