TUBE BOX S2

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.

A true high end solution in a much smaller package!

Specifications:

• Tubes: 2 x ECC83 (12AX7A)
• Input Impedance: 10 ohms, 100 ohms, 1 kΩ, 2 kΩ
• Input Capacitance/Impedance:
  • Capacitance: 47pF, 147pF, 267pF, 367pF, 487pF, and 587pF*
  • Impedance: 47 kΩ, combined with other input impedance settings without any influence
• 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: 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, compatible with 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)

• Suitable for MM and MC cartridges
• Precise RIAA equalization in two stages, passive/active
• Fully discrete circuit design without OpAmps
• Features 2x ECC83 tubes (replaceable)
• Subsonic filter button conveniently located on the front panel
• Front-panel gain control
• Ultra-low noise circuitry with FET input stage
• Dual mono circuitry for optimal channel separation
• Polystyrene capacitors used wherever possible
• Gold-plated RCA inputs and outputs
• External power adapter with multiple internal power supplies
• Well-filtered high-voltage anode power supply
• Sandwich aluminum/metal casing for protection against vibrations and electromagnetic interference