Stellar right out of the box

The Tube Box S2 uses fully discrete circuitry, rather than operational amplifiers (aka Op-Amps, used in simpler, more affordable designs). The standard, user-replaceable tubes sound stellar out of the box, though the design opens the gates for sound-shaping via tube rolling should you want to take it a step further.

Beautiful mid-range 

The Tube Box S2’s sonic presentation is full & relaxed with a blossoming mid-range more typical of much more expensive designs. The stage welcomes most MM & MC cartridges on the market with a wide range of gain, loading & capacitance settings. The S2 series’ 2-layer aluminum/steel enclosure shields the circuitry from vibration and electromagnetic interference for more music, less noise.

Product highlights

• Suitable for MM and MC cartridges
• Precise RIAA equalization in two parts, passive/active
• Fully discreet circuit design without OpAmps
• 2x ECC83 tubes (replaceable)
• Front-sided Subsonic filter button
• Front-sided Gain control
• Ultra low noise circuitry with FET input stage
• Dual mono circuitry for optimized channel separation
• Polystyrene capacitors used where possible
• Gold-plated RCA in- and outputs
• External power adaptor and multiple internal power supplies
• Well-filtrated high-voltage anode power supply
• Sandwich aluminum/metal casing protects from vibrations and electromagnetic interference
• Available in silver or black
• Handmade in Europe

Specs

• Tubes: 2 x ECC83 (12AX 7A)
• Input impedance: 10ohms, 100ohms, 1kohm, 2kohms A,
• Input capacitance/impedance: 47pF, 147pF, 267pF, 367pF,487pF and 587pF*/47kohms B
• Input gain: 40dB,43dB B ; 50dB, 53dB and 60dB, 63dB A
• Noise floor: 80dB (A weighted) at 40dB input gain 75dB (A weighted) at 50 dB and 63dB input gain
• THD: <0,02% at 40dB input gain <0,05% at 50dB and 63dB input gain
• RIAA-equalisation curve accuracy: 20Hz – 20kHz / max. 0,4dB
• Subsonic filter: at 20Hz with 18dB/octave
• Input: 1 pair RCA/phono sockets
• Line-level output: 1 pair RCA/phono sockets
• Outboard power supply: 18V/1.000mA DC, suitable for your country’s mains supply
• Power consumption: 470mA DC, <1W in standby

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