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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 customers many options to pick from and alter the sound signature to their preferences. 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.
Compatible upgrade power supply: Accu Box S2
FeaturesTubes | 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 Together with other input impedance settings without any influence! |
Input gain | 40 dB 43 dB / 50 dB 60 dB und 63 dB |
Noise floor | 80 dB (A weighted) at 40 dB input gain 75dB (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-equalisation curve accuracy | +/- 0.4 dB/20 Hz - 20 kHz |
Subsonic filter | at 20 Hz with 18 dB/octave |
Input | 1 pair RCA/phono sockets |
Line-level output | 1 pair RCA/phono sockets |
Outboard power supply | 18 V / 1.000 mA DC suitable for your country's mains supply |
Power consumption | 470 mA DC <1W in standby |
Dimensions W x H x D with sockets | 103 x 73 x 131 mm |
Weight | 410 g without power supply |
Manual [pdf]
Product Information [pdf]
Reviews
Colin Holter finds The Tube Box S2 hits a sweet spot
USA 03.2020
… This pre-amp sounds great right out of the box. Music played through this preamp sounds rich and full …
… stepping up to a high-quality pre-amp like this can definitely make an impact …
WATCH THE VIDEO: https://www.youtube.com/watch?v=qseEuSu4J20
Review
Stereoplay reviews the Tube Box S2
DE 03.2018:
Value blast! Flexible adjustable phono stage with interchangeable tubes. Doesn`t softer but excites with a dynamic punchy sound and great spatial representation.
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