Gain 20Db Phono Turntable Phonograph Preamp, Dual Op Amp Ne5532 With Rca 3.5Mm Product Name: Mini stereo audio preamplifier Model: PA001 Input: RCA (L / R) + 3.5mm Output: RCA (L / R) + 3.5mm + headphones Size: 87mm / 3.42in 50mm / 1.96in 37mm / 1.45in Powered: DC 9-19V Compatible input devices: DVD, CD, set-top box, MP3, TV, mobile phone, computer, tablet, phono turntable, sound card, guitar, bass, electronic instrument, game console or other devices. Compatible output devices: speakers, subwoofer, sound Blaster, reverberator, AV receiver, Post-Amp, Headphones, etc. What's in the box: PA001 preamplifier * 1 pcs DC power adapter * 1 pcs It is perfect for audio signal amplification. The amplification multiples is 10 times (20dB). It can directly drive the headphone to work (the headphone output port can't be used with other output ports at the same time), and supports the maximum headphone impedance of 16 ohm. Using the classic Dual OP AMP NE5532, high frequency electrolytic capacitor, noise reduction circuit design, no background noise, effective gain audio, improve sound quality. Input: RCA (L / R) + 3.5mm, Output: RCA (L / R) + 3.5mm + headphones, Poowered by DC 9-19v, static current about 8Ma. With volume adjustment knob, the volume can be adjusted freely. Small size, easy to carry and use. Size: 87mm / 3.42in 50mm / 1.96in 37mm / 1.45in . Widely compatible with all audio devices. Input: DVD, CD, set-top box, MP3, TV, mobile phone, computer, tablet, phono turntable, sound card, guitar, bass, electronic instrument, game console or other devices. Output: speakers, subwoofer, Sound Blaster, reverberator, AV receiver, Post-Amp, Headphones, etc.