Pro-Ject Tube Box E Valve Phono Stage

Experience warm, analogue sound with this entry-level tube phono stage, designed for vinyl lovers seeking rich audio and flexible cartridge support.

• Precise passive & active RIAA equalisation
• Fully discreet circuit design without OpAmps
• Ultra low noise circuitry with FET input stage
• Well-filtrated high-voltage anode power supply
• MM & MC Compatibility
• Dual-mono electrical design

• Solid metal casing protects from interferences

Elegant Design Meets Practical Engineering

The Tube Box E brings classic tube warmth to your turntable setup in a sleek, miniature form. Its all-metal enclosure shields against unwanted interference, while the finely machined aluminium front panel adds a touch of sophistication. Available in silver or black, it blends seamlessly into any hi-fi system.

Pure Analogue Performance, Made Simple

Inside, a fully discrete circuit design avoids operational amplifiers (OpAmps), resulting in ultra-low noise and accurate RIAA equalisation. This means your records sound clearer and more natural, with lush mids and a relaxed tonal character. Dual mono circuitry enhances channel separation, delivering a more immersive stereo image.

Flexible Features for Vinyl Enthusiasts

Supporting both MM and MC cartridges, the Tube Box E offers front panel gain control and a subsonic filter to reduce rumble. Loading options are easily adjustable underneath, allowing precise matching to your cartridge. Replaceable ECC83 tubes invite sound-shaping through tube rolling, giving you control over your audio signature.

Specs

• nput Impedance (MM)
  47 kΩ
• Input Impedance (MC)
  Variable 10 - 2,000Ω
• Phono Stage Capacitance (MM)
  47, 147, 267, 367, 487 or 587 pF
• Phono Stage Gain (MM)
  40, 43, 50, 53 dB
• Phono Stage Gain (MC)
  50, 53, 60, 63 dB
• Phono Stage Equalization Options
  RIAA
• Subsonic Filter
  at 20Hz with 18dB/octave
• RIAA Accuracy (20Hz - 20kHz)
  +/- 0,5 dB
• Valves
  2 x ECC83
• THD (MM Input)
  <0,03 %
• THD (MC Input)
  <0,07 %
• Noise Floor (MM)
  77 dBA
• Noise Floor (MC)
  65 dBA
• RCA Input(s)
  1 x RCA Pair
• Fixed Analogue Output(s)
  1 x RCA Pair
• External Power Supply Rating
  18V-1A DC
• Maximum Power Consumption
  <1 W
• Additional Dimensions (W x H x D)
  With Sockets: 103 x 73 x 131 mm
• Dimensions (W x H x D)
  103 x 73 x 115 mm
• Weight
  Without Power Supply: 4.5 kg