Pro-Ject set out with the goal of providing a flexible, convenient and sound-first approach to digitally recording precious vinyl & tape. The resulting digital copy is meant to act as an indestructible archive of an invaluable recording. The front input selector allows to choose between an incoming phone or line-level signal (selected input also determines output). This function allows A/D Box S2 Phono either to serve as high-quality phono preamp in your hifi system or as a medium for archiving. ‘Record level’ adjustment is extremely helpful in avoiding clipping as well, though keep in mind that the best sonics are achieved by pushing the gear a bit. ‘Record level’ should be substantial but without peaking (partially dependent on the source material).

Additional information
Weight0.33 kg
Dimensions12.7 × 10.3 × 3.7 cm



  • MM & MC capable
  • Linear RIAA equalisation
  • Phono stage technology by Dr. Sykora
  • Line level input switchable
  • Recording level control
  • USB recording output to computer (Win & Mac)
  • Ultra low noise & low distortion levels
  • SMD circuitry
  • Metal casing protects against vibration and interference
  • Available in silver or black
  • Handmade in Europe


  • Input capacitance/input impedance, MC: 100ohms/120pF A
  • Input capacitance/input impedance, MM: 47kohms/120pF B
  • Gain MM/MC: 40dB/56dB Gain, line level input: 11dB
  • Max. output: 5Vrms / 1kHz
  • Noise floor, MM / MC: 94dB (A weighted) / 75dB (A weighted)
  • THD, MM / MC: <0,003% / <0,02%
  • RIAA-equalisation curve accuracy: 20Hz – 20kHz / max. 0,5dB
  • A/D converter: Burr Brown PCM2904 16-Bit Delta Sigma
  • Sampling rates: 32, 44,1 and 48kHz
  • USB output: 5 pin mini b connector
  • USB signal: digital serial data protocol USB 1.1
  • Inputs (Phono-In /Line-In): 1 pair RCA/phono sockets/3-pole 3,5mm co-axial jack
  • Analogue output: 1 pair RCA/phono sockets
  • Outboard power supply: 5V/1A DC
  • Power consumption: 300mA DC, <1W in standby

A: typical for low output MC cartridges, B: typical for MM or high output MC
*Input capacitance is irrelevant for low output MC cartridges.

Upgrades & Add-Ons…