AI-generated product photo — not official manufacturer imagery.
Estimated price (community-sourced)
About the JD-502A
The Jolida JD-502A (also referred to as SJ/JD-502A) is a high-quality integrated tube amplifier praised for its robust performance and entry into tube audio. It features a built-in preamplifier, allowing direct connection from sources like CD players without needing a separate preamp. Equipped with custom wound audio transformers, ALPS potentiometer, and gold-plated RCA inputs, it operates in Ultra Linear Class AB mode with low feedback (around 5dB). Users highlight its bold, powerful sound with excellent dynamics, suitable for driving 4-8 ohm speakers. Tube complement includes 4x 6550/KT88 power tubes, 2x 12AX7A/ECC83 preamp tubes, and 2x 12AT7/ECC81 driver tubes. Bias is user-adjustable at 50mV ±5mV. Originally retailed around $1095, it's no longer manufactured but available used. Reviews note superior midrange warmth compared to solid-state amps, with options to swap to KT88 for enhanced dynamics.
Specifications
Key Specifications
Full structured specifications are available to members.
Sign up to see full specificationsSee the full picture as a member
Create a free account to see where to buy, full structured specifications, similar components, and the systems that pair this with other gear.
Sign up free