Pro-Ject Tube Box S2 preamplifier, black

The Tube Box S2 features a fully discrete circuit design, without the use of any operational amplifiers (OpAmps). It is also a product that comes with interchangeable tubes for sound shaping. The Tube Box S2 will deliver a full and smooth sound with great midrange.

It supports both MM and MC cartridges and comes with multiple gain settings that can be switched on the front panel. There are 5 variable input impedance settings available to match each MM cartridge, the 47 kOhms input impedance setting is fixed and suitable for high power MC cartridges.

The aluminum housing is adapted to the DS2 line in appearance and protects against vibrations and electromagnetic interference for superior sound.

Additional features:

• Tubes: 2x ECC83 (12AX 7A);
• Input impedance: 10 Ohms, 100 Ohms, 1 kOhm, 2 kOhms;
• Input capacitance/impedance: 47 pF, 147 pF, 267 pF, 367 pF, 487 pF and 587 pF/ 47 kOhms;
• Input gain: 40 dB, 43 dB/50 dB, 60 dB and 63 dB;
• Noise floor: 80 dB (A weighted) at 40 dB input gain, 75 dB (A weighted) at 50 dB and 63 dB input gain;
• THD: <0.02% at 40 dB input gain <0.05% at 50 dB and 63 dB input gain;
• RIAA-equalization curve accuracy: +/- 0.4 dB/20 Hz - 20 kHz;
• Subsonic filter: at 20 Hz with 18 dB/octave;
• Outboard power supply: 18 V/1.000 mA DC, suitable for your country's mains supply;
• Power consumption: 470 mA DC, <1 W in standby.