R8 vs Jolida (Shanghai) JD-502A
The JD-502A's power @ 8ω is 85W against the R8's 45W, its signal-to-noise 85 dB against 91 dB, and its output impedance 8Ω against 4Ω. Both share thd (1.000%).
AI-generated product photo — not official manufacturer imagery.
AmplifiersIntegrated AmplifiersTube Amplifiers
Estimated price (community-sourced)
$893
Around — community and catalog average, updates slowly
About the R8
The Willsenton R8 is a vacuum tube integrated amplifier in the R8 Series. It uses a push-pull Class AB design and supports switchable triode and ultra-linear operation. The amplifier is offered with KT88 power tubes and is also compatible with EL34 and 6550EH output tubes, with user-adjustable bias and a headphone output. It is designed for stereo hi-fi playback and includes selectable output impedance taps for 4 ohms and 8 ohms speakers.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 45W @ 8Ω
- Power @ 4Ω
- 45W @ 4Ω
- Amplifier Class
- AB
- Minimum Impedance
- 4Ω
- Input Sensitivity
- 0.4V RMS
- Input Impedance
- 100Ω
Analog Output
Analog signal output specifications
- THD
- 1.000%
- SNR
- 91 dB
- Output Impedance
- 4Ω
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 400 × 200 × 390 mm (W × H × D)
- Weight
- 30 kg (66 lbs)
Key Specifications
Power: 45W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions