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About the Tube Box SE II
The Pro-Ject Tube Box SE II uses two ECC83 (12AX7) triode tubes to provide high-quality amplification and RIAA equalization for both moving magnet (MM) and moving coil (MC) phono cartridges. It offers selectable input impedances for MM (120, 220, 340, 440 pF/47k ohms) and MC (17, 18, 20, 22, 69, 100, 220 ohms/120 pF) cartridges, with gain up to 60dB for MC. The device features a subsonic filter at 18Hz with 24dB/octave slope to reduce low-frequency noise and rumble. Its robust metal chassis shields internal electronics from vibration and electromagnetic interference, and it employs discrete dual-mono circuitry for optimal channel separation. Gold-plated RCA connectors ensure corrosion-free signal transfer. An outboard mains-fed power supply (16 VAC / 1,000 mA) is included to minimize noise. The unit measures approximately 4 x 2-3/4 x 6-1/4 inches and weighs about 2.3 lbs. It is a cost-effective solution for audiophiles seeking warm, detailed tube sound in a compact form factor.
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