The Tube Box S2 is a premium phono stage for both Moving Magnet (MM) and Moving Coil (MC) cartridges. In order to achieve the best sound possible, it's become Pro-Ject's first product to feature a discrete circuit design without any operational amplifiers (op-amps).

The Tube Box S2 delivers a relaxed audio performance with lush mids in a full and enveloping sound stage, just like far more expensive pure-valve phono stages are capable of. Thanks to the built-in adjustable gain, capacitance, impedance and subsonic filter settings, it's possible to tune the device to perfectly complement almost any modern MM or MC cartridge. It's also possible to tune the sound further, as the Tube Box S2 is Pro-Ject's first ever product designed for the valves to be replacable - allowing for tube rolling or sound shaping.

The new S2 casing is a big additional asset to the design, as not only does it deliver the highest visual appeal, but it is also sturdy enough to protect the internal circuitry against unwanted interferences and vibrations, which can cause unpleasant listening experiences. The Tube Box S2 also benefits from protective cages around the valves - inspired by the superior Tube Box DS2 design

Inspired by high-end designs but available for a very appealing price, the Tube Box S2 is a real audiophile bargain.

Key Features:

Valve phono stage
Suitable for MM and MC cartridges
Precise RIAA equalisation in two parts, passive/active
Supplied with 2 x ECC83 valves
Gold-plated RCA in and outputs
Front-sided Subsonic filter button
Front-sided Gain control
Adjustable impedance and capacitance settings
Dual mono circuitry for optimized channel separation
Ultra low noise circuitry with FET input stage
Premium S2 chassis
Available in black or silver

Specs

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Valve Complement:	2x ECC83 (12AX7)
Input Impedance Settings:	10 / 100 / 470 / 1k / 2kΩ, fix 47kΩ
Capacitance Settings:	50pF / 150pF / 270pF / 370pF / 490pF / 590pF
Gain Settings:	40dB / 43dB / 50dB / 60dB / 63dB
Signal-to-Noise Ratio:	77dBA
THD+N:	< 0.0025%
RIAA Accuracy:	+/- 0,4dB/20Hz - 20kHz
Subsonic Filter:	20Hz at 12dB/octave
Input:	1x RCA
Output:	1x RCA
Dimensions:	103 x 37 x 119mm

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