• Pro-Ject: Tube Box S Phono Preamp
  • Pro-Ject: Tube Box S Phono Preamp
  • Pro-Ject: Tube Box S Phono Preamp
  • Pro-Ject: Tube Box S Phono Preamp

Tube Box S Phono Preamp

↳ great entry point for turntable tube electronics

while supplies last
Black sale $349.00 $449.00 Stock Email
Silver sale $349.00 $449.00
Earn up to 3490 Reward Points with this purchase! more info


  • high-end audiophile phono preamp with tube technology
  • this is a great entry level tube phono stage
  • boasts "lively and powerful with convincing soundstaging and emotional presentation"
  • improvements in Tube Box S model: improved circuitry and better components
  • gold plated RCA inputs and outputs
  • double mono triode output stage
  • high quality metal casing offers shielding from both vibration and electromagnetic interference


  • Tubes: 2 x ECC83 (12AX7A) Triode Output
  • Load Capacity: 50. 150, 270 and 370pF with 47k ohm settings only; 10,
  • 100, 1k, 2k ohm, typical for low output MC cartridges
  • Load Impedance: 47k ohm, typical for MM or high-output MC cartridges
  • Gain: 41dB, typical for MM or high-output MC cartridges
  • 51dB or 61dB typical for low-output MC cartridges
  • Noise MM: 84dB (94dB - A weighted)
  • Noise MC: 67 dB (75 dB A-Weighted)
  • THD MM: 0.01%
  • THD MC: 0.05%
  • RIAA EQ Curve Accuracy: 20 Hz - 20 kHz / max 0.4 dB
  • Power Consumption: 18 V / 470 mA AC
  • Power Supply: Mains-fed Outboard Power Supply
  • Output Voltage: 16 V / 1000 mA AC
  • Dimensions (WHD): 4.1 x 3 x 5 in., 103 x 74 x 112 mm
  • Weight: 1.8 lbs., 810 g


  • power supply

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