Pro-Ject Phono Box RS Pre-Amp - Black

Free Shipping
Black $999.00 2 left
Pin It



  • compatible with both moving magnet (MM) & moving coil (MC) cartridges
  • high-end, reference quality audiophile sound
  • true dual mono design
  • fully passive RIAA & DECCA equalisation
  • unique continous variable input impedance loading, matches every cartridge (adjusts even while playing)
  • RCA & XLR In & Out
  • superior low noise / low distortion
  • elegant dip switches
  • DC power supply (< 1 watt standby power)
  • metal casing protects against vibration and interference
  • also available in silver


The Phono Box RS is an ultra low noise and low distortion preamplifier designed to deliver breathtaking, reference quality sound. Thanks to its unique variable impedance control (that can be done while playback!), the Phono Box RS is capable to adapt to virtually any phono cartridge (moving magnet or moving coil). It is constructed of high end parts including the SSM2019 from Analog Devices as input stages and Linear Technology LT1010 as high current buffer stage, for ultra low levels of distortion and noise. It also features passive RIAA and DECCA equalisation is selectable with fully balanced circuitry and both XLR and RCA inputs and outputs. All this together with an elegant exterior delivers clear, detailed and smooth audiophile sound.


  • Input impedance: Fixed 10 ohms or 47kohms, variable 10 - 1200 ohms
  • Load capacity switchable: 100pF 200pF, 300pF, 420pF, 520pF
  • Output impedance: 50 ohms
  • Gain, MM / MC: RCA: 40, 50, 60 dB, XLR: 46, 56, 66 dB
  • Signal to noise ratio: 80dB (91dB - IEC -A)
  • THD: < 0,019%
  • RIAA accuracy: within 0,3dB/20Hz - 20kHz
  • Subsonic: 20Hz / - 12dB
  • Input: RCA & XLR
  • Output: RCA & XLR
  • dimensions W x H x D (T with sockets): 206 x 72 x 200 (210)mm
  • weight: 2000g without power supply