ECC83-TK Vacuum Tube, Matched Quad

The ECC83-TK Matched Quad includes four performance-matched 12AX7 vacuum tubes for compatible input and inter-stage audio amplifier circuits. The high-gain, low-noise design supports consistent operation across equipment that requires a coordinated set of four tubes.

Clean headroom provides a balanced response with defined lows, a rich midrange and smooth highs, while producing harmonically rich overdrive when pushed. Each tube is rigorously tested, cryogenically treated and extensively burned in before being selected for the matched set.