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Product Description

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The Pro-Ject Tube Box Series 2

is a MM/MC Tube Phonostage with Discrete Circuitry & High-End Tube Sonics

Tube Box S2 uses fully discrete circuitry – no operational amplifiers here (aka Op-Amps, used in simpler, more affordable designs but with some sacrifice to sound quality). The standard, user-replaceable tubes sound stellar out of the box, though the design opens the gates for sound-shaping via tube rolling should you want to take it a step further.

Tube Box S2’s sonic presentation is full & relaxed with a blossoming midrange more typical of much more expensive designs. The stage welcomes most MM & MC cartridges on the market with a wide range of gain, loading & capacitance settings. The S2 series’ 2-layer aluminum/steel enclosure shields the circuitry from vibration and electromagnetic interference for more music, less noise.

  • Suitable for MM and MC cartridges
  • Precise RIAA equalization in two parts, passive/active
  • Fully discreet circuit design without OpAmps
  • 2x ECC83 tubes (replaceable)
  • Front-sided Subsonic filter button
  • Front-sided Gain control
  • Ultra low noise circuitry with FET input stage
  • Dual mono circuitry for optimized channel separation
  • Polystyrene capacitors used where possible
  • Gold-plated RCA in- and outputs
  • External power adaptor and multiple internal power supplies
  • Well-filtrated high-voltage anode power supply
  • Sandwich aluminum/metal casing protects from vibrations and electromagnetic interference
  • Available in silver or black
  • Handmade in Europe

Features & Specs Line Circle

TUBES
2 x ECC83 (12AX 7A)
INPUT IMPEDANCE
10ohms, 100ohms, 1kohm, 2kohms A,
INPUT CAPACITANCE/IMPEDANCE
47pF, 147pF, 267pF, 367pF,487pF and 587pF*/47kohms B
INPUT GAIN
40dB,43dB B ; 50dB, 53dB and 60dB, 63dB A
TUBES
2 x ECC83 (12AX 7A)
INPUT IMPEDANCE
10ohms, 100ohms, 1kohm, 2kohms A,
INPUT CAPACITANCE/IMPEDANCE
47pF, 147pF, 267pF, 367pF,487pF and 587pF*/47kohms B
INPUT GAIN
40dB,43dB B ; 50dB, 53dB and 60dB, 63dB A
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Product Descriptiondown arrow

Product Description

Line Circle

The Pro-Ject Tube Box Series 2

is a MM/MC Tube Phonostage with Discrete Circuitry & High-End Tube Sonics

Tube Box S2 uses fully discrete circuitry – no operational amplifiers here (aka Op-Amps, used in simpler, more affordable designs but with some sacrifice to sound quality). The standard, user-replaceable tubes sound stellar out of the box, though the design opens the gates for sound-shaping via tube rolling should you want to take it a step further.

Tube Box S2’s sonic presentation is full & relaxed with a blossoming midrange more typical of much more expensive designs. The stage welcomes most MM & MC cartridges on the market with a wide range of gain, loading & capacitance settings. The S2 series’ 2-layer aluminum/steel enclosure shields the circuitry from vibration and electromagnetic interference for more music, less noise.

  • Suitable for MM and MC cartridges
  • Precise RIAA equalization in two parts, passive/active
  • Fully discreet circuit design without OpAmps
  • 2x ECC83 tubes (replaceable)
  • Front-sided Subsonic filter button
  • Front-sided Gain control
  • Ultra low noise circuitry with FET input stage
  • Dual mono circuitry for optimized channel separation
  • Polystyrene capacitors used where possible
  • Gold-plated RCA in- and outputs
  • External power adaptor and multiple internal power supplies
  • Well-filtrated high-voltage anode power supply
  • Sandwich aluminum/metal casing protects from vibrations and electromagnetic interference
  • Available in silver or black
  • Handmade in Europe
Features & Specsdown arrow

Features & Specs Line Circle

TUBES
2 x ECC83 (12AX 7A)
INPUT IMPEDANCE
10ohms, 100ohms, 1kohm, 2kohms A,
INPUT CAPACITANCE/IMPEDANCE
47pF, 147pF, 267pF, 367pF,487pF and 587pF*/47kohms B
INPUT GAIN
40dB,43dB B ; 50dB, 53dB and 60dB, 63dB A
TUBES
2 x ECC83 (12AX 7A)
INPUT IMPEDANCE
10ohms, 100ohms, 1kohm, 2kohms A,
INPUT CAPACITANCE/IMPEDANCE
47pF, 147pF, 267pF, 367pF,487pF and 587pF*/47kohms B
INPUT GAIN
40dB,43dB B ; 50dB, 53dB and 60dB, 63dB A
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