PP5 Phono Turntable Preamp with DC 12V Adapter with Level Volume Control Low.2 RCA (L R) inputs, 2 RCA (L R) and 1x 1/4 " TRS output, multiple connection options.With level/ volume control knobs, independent knob control, easy to operate.High quality metal housing, sturdy and durable, compact and portable.Outstanding low noise performance, you can enjoy the better sound and less distortion.The turntable preamplifier can convert the sound signal to the line level signal, an advanced circuit sound preamplifier.PP500 Phono Turntable Preamp Mini Stereo. Preamplifier for LP Turntable Low Noise. Phonograph Preamplifier Record Player. Phono Preamp with Level Volume Control. RCA Input RCA TRS Output DC 12V Adapter. Knob Control: With level/ volume control knobs, independent knob control, easy to operate. Material: High quality metal housing, sturdy and durable, compact and portable. Sound Quality: Outstanding low noise performance, you can enjoy the better sound and less distortion. Phono Preamp: 2 RCA (L R) inputs, 2 RCA (L R) and 1x 1/4 " TRS output, multiple connection options. Function: The turntable preamplifier can convert the sound signal to the line level signal, an advanced circuit sound preamplifier.