JD-502A vs JD-202BRC
The JD-202BRC's power @ 8ω is 60W against the JD-502A's 85W. Both share signal-to-noise (85 dB), thd (1.000%), and output impedance (8Ω).
AI-generated product photo — not official manufacturer imagery.
AmplifiersTube AmplifiersIntegrated AmplifiersDiscontinued
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
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 85W @ 8Ω
- Amplifier Class
- AB
- Minimum Impedance
- 4Ω
- Input Sensitivity
- 0.6V RMS
- Input Impedance
- 100000Ω
Analog Output
Analog signal output specifications
- THD
- 1.000%
- SNR
- 85 dB
- Output Impedance
- 8Ω
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- RCA
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 430 × 190 × 380 mm (W × H × D)
- Weight
- 22 kg (49 lbs)
Key Specifications
Power: 85W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions