Tube Box DS3 B

About the Tube Box DS3 B

The Tube Box DS3 B is a precision tube phono preamplifier designed by Pro-Ject Audio Systems, featuring balanced signal transmission with 5-pin mini XLR and standard XLR inputs and outputs. It uses 2x E88CC / 6922 vacuum tubes known for low noise and microphonics, delivering detailed lows and warm highs. The device offers stepless input impedance loading from 10 to 1000 Ohms and selectable capacitance settings (50, 150, 300, 400 pF), allowing seamless adjustment during playback to perfectly match a wide variety of cartridges. Gain can be set from 40 to 65 dB, with an additional +6 dB gain when using XLR output. The unit includes a subsonic filter at 20 Hz with 18 dB/octave slope and boasts a signal-to-noise ratio greater than 87 dBV (A-weighted) and THD below 0.03%. It is handmade in Europe with audiophile-grade components including polypropylene capacitors and offers a robust, interference-free balanced connection for superior sound quality. Dimensions are 206 x 70 x 194 mm and it weighs 1560 g without power supply.