pro-ject Tube Box S sings the pre-play stage
• febrile substance
• Fever level ECC83 (12AX7)
• Dual/mono Settings
• Fever grade poly propylene German Weimar capacitor
• The RIAA Recording Association standard balance
• Switch input impedance/capacitance
• 3 adjustable gain levels
• Subsonic filters
• Outstanding sound quality
• Size W*H*D: 103*74*115mm

Suitable for MM and MC cartridges
The RIAA equilibrium is divided into passive/active parts
Complete discreet circuit design without op amps
2 ECC83 tubes (replaceable)
Subsonic filter front button
Positive gain control
Ultra-low noise circuit with FET input stage

Dual mono circuits optimize channel separation
Use polystyrene capacitors whenever possible
Gold plated RCA input and output
External power adapters and multiple internal power supplies
Well-filtered high voltage anode power supply
Sandwich aluminum/metal housing protects against vibration and electromagnetic interference

Vacuum tube 2 x ECC83 (12AX 7A)
Input impedance 10 ohms, 100 ohms, 1 kohm, 2 kohms
Input capacitance/impedance 47pF, 147pF, 267pF, 367 pF, 487 pF and 587 pF * / 47 kohms, as well as other input impedance Settings, are unaffected!
Input gain 40 dB, 43 dB / 50 dB, 60 dB and 63 dB
Background noise is 80 dB at 40 dB input gain (A weighted) and 75dB at 50 dB and 63 dB input gain (A weighted)
THD < 0.02% at 40 dB input gain < 0.05% at 50 dB and 63 dB input gain
RIAA equalization curve accuracy Abweichung max. 0.4 dB / 20 Hz -20 kHz
20 Hz subsonic filter, 18 dB/octave
Enter je 1 Paar RCA/Cinch-Buchsen
Line level output 1 pair of RCA/phone jacks
Outboard power supply 18 V / 1.000 mA DC, suitable for your country's power supply
Power consumption 470 mA DC, standby <1W
Dimensions W xH x D with socket 103 x 73 x 131 mm
Weight 410 g

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 ohm 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.