Get High Fidelity Tube Smoothness, Great Looks, and MM/MC Support with Pro-Ject VC-S3 Fully discrete, ultra-low noise circuitry for perfect sound reproduction Dual mono designed with user replaceable ECC83 tubes RIAA equalization with passive and active options Handmade in Europe Sound that defies expectations Tube Box S2 uses fully discrete circuitry – no operational amplifiers here (aka Op-Amps, used in simpler, more affordable designs but with some sacrifice to sound quality). 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. Tube Box S2’s sonic presentation is full & relaxed with a blossoming midrange 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. Specifications General Weight: 1 lb Dimensions: 5.2" x 4" x 2.9" Tube Box S2 Full User Manual Pro-Ject 2 Year Warranty Phonostage Tubes: (x2) ECC83 (12AX 7A) Input impedance: 10Ω, 100Ω, 1kΩ, 2kΩ A Input capacitance/impedance: 47pF, 147pF, 267pF, 367pF, 487pF and 587pF/47kΩ B (Input capacitance is irrelevant for low output MC cartridges) 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: