Pro Ject Tube Box S2 preamp BlackInnovative miniature-sized phono preamplifier with tube output and high-end sound!

The Tube Box S2 is Pro-Ject's very first product to feature a fully discreet circuit design without using any operational amplifiers (OpAmps). It also is the first product that comes with replaceable tubes for tube rolling and sound-shaping. This gives customers many options to pick from to alter the sound signature to their preference. Tube Box S2 will give a full and relaxed laid back sound with lush mids, just as you would expect from a much bigger high-end tube phono pre-amplifier. It also offers support for both MM and MC cartridges and comes with many gain settings to be switched on the front panel. The Five different variable 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 the DS2 line in looks and protects against vibrations and electromagnetic interferences to obtain a superior sound.

Compatible upgrade power supply: Accu Box S2FeaturesSuitable for MM and MC cartridgesPrecise RIAA equalisation in two parts, passive/activeFully discreet circuit design without OpAmps2x ECC83 tubes (replaceable)Front-sided Subsonic filter buttonFront-sided Gain controlUltra low noise circuitry with FET input stageDual mono circuitry for optimized channel separationPolystyrene capacitors used where possibleGold-plated RCA in- and outputsExternal power adaptor and multiple internal power suppliesWell-filtrated high-voltage anode power supplySandwich alu/metal casing protects from vibrations and electromagnetic interferenceAvailable in silver or blackTechnical SpecificationsTubes 2 x ECC83 (12AX 7A)Input impedance 10 ohms, 100 ohms, 1 kohm, 2 kohmsInput capacitance/impedance 47pF, 147pF, 267pF, 367 pF, 487 pF and 587 pF* / 47 kohms, Together with other input impedance settings without any influence!

Input gain 40 dB, 43 dB / 50 dB, 60 dB und 63 dBNoise floor 80 dB (A weighted) at 40 dB input gain, 75dB (A weighted) at 50 dB and 63 dB input gainTHD