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JD-502A

Name: Jolida JD-502A
Brand: Jolida

Jolida

AmplifiersTube AmplifiersIntegrated AmplifiersDiscontinued

Estimated price (community-sourced)

$750

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

Power: 85W

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