Pro-ject Tube Box S2 Phono Preamplifier

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Pro-ject Tube Box S2 Phono Preamplifier

Tube Box S2 is our very first product to feature a fully discreet circuit design without using any operational amplifiers (OpAmps). It also is the first product to come with replaceable tubes for tube rolling and sound-shaping. This gives the customer many options to pick from and alter the sound signature to his preference. Tube Box S2 will give a full and relaxed laid back sound with lush mids, just like you would expect it from a much bigger high end tube phono pre-amplifier. It offers support for both MM and MC cartridges and comes with many gain settings to be switched on the front panel. Five variable input impedance settings are available to adjust to any MM cartridge, the 47k ohms input impedance setting is fixed and suited for high output MC cartridges. The aluminium/metal casing is adapted to our DS2 line in looks and protects against vibrations and electromagnetic interferences for superior sound.

A true high end solution in a much smaller package!

• Suitable for MM and MC cartridges

• Precise RIAA equalisation 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 alu/metal casing protects from vibrations and elec-tromagnetic interference

• Finishes: silver or black


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Customer Reviews

Based on 2 reviews

Awesome bit of kit love it

Barry Tindall
Project S2 Pre amp

Absolutely brilliant. I had a solid state pre amp feeding my valve main amp. I had been looking for a reasonably priced valve pre-amp to match my Project turntable. I saw this one and took the plunge. The sound is incredible, much more tone and depth. I can certainly hear the difference between the tube and solid state. Good value for money and great performance. Instructions on setting the impedance could be a little bit clearer but once that is sorted great little unit.