Photo preamplifier with RCA input and output 100-240V 1、DC 12V power supply and dual gain: The phono amplifier is equipped with a DC 12V power supply, so it is no longer limited to application scenarios. Given that the turntable signal is relatively weak, the PP500 adds a gain adjustment kit to the input and output to ensure perfect volume playback. 2、Low Noise: The PP400 low noise turntable operational amplifier provides excellent performance. The output is 2 V (PP) with a maximum of 10K ohms. It is best to place the preamplifier close to the source to reduce unwanted noise and interference. 3、High Sensitivity: The phono preamplifier can convert the sound signal to linear signal, this advanced sound preamplifier circuit, electromagnetic input sensitivity transducer. Independent operation of the knob, more convenient to operate. 4、Connect to a turntable: The turntable amplifier combines any turntable with modern sound equipment without the need for a dedicated phono input to amplify the music. You can connect a speaker, computer, laptop, etc. 5、Plug and Play: This mini preamplifier with RCA stereo inputs and RCA stereo outputs, easily connects the turntable to RCA inputs and grounding. Then also connect the amplifier receiver to the RCA output. Plug and play, convenient to use.