26% under what the other stores charge
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The JJ ECC82 is a current-production 12AU7 dual triode built by JJ Electronic in Slovakia. It uses a short-plate design aimed at low noise and microphonics, which suits line stages, phono stages, mic preamps and driver positions. Each tube is screened for noise and microphonics on Amplitrex testers, and balanced-triode and matched-pair options exist for phase-inverter and push-pull use. Against NOS 12AU7s it is consistent and readily available; against other new-production 12AU7s it is known for a warm, neutral, detailed voice rather than a bright or overly lush one.
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Lowest price we've seen: $19.79 on Nov 13 at Amplified Parts. Tracked across 15 stores since Nov 13.
Ratings are very high, and owners describe the tube as quiet and clean with a warm, neutral tone. Buyers who use it in driver and phase-inverter positions report low microphonics.
The JJ ECC82 is a version of the classic 12AU7 preamp tube. It is most commonly used in driver applications. It is a high-current tube with a warm, neutral character and good detail.
It uses JJ's short plate design, which suits uses where noise and microphonics are critical, such as line stages, phono stages and mic preamps. Versions with balanced triodes for phase inverter use are also available, as well as balanced-and-matched pairs or multiples.
Preamp tubes are tested for noise and microphonics with Amplitrex testers driving an external amp. Tubes that do not pass the performance criteria are discarded or sent back to JJ Electronic for evaluation.