JA80 vs Thrax Audio Heros
The Heros's power @ 8ω is 100W against the JA80's 90W, its output impedance 0.4Ω against 8Ω, and its weight 15 kg (33 lbs) against 35 kg (77 lbs). Both share class (A).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower AmplifiersTube Amplifiers
Estimated price (community-sourced)
$4,000 - $29,300
Around — community and catalog average, updates slowly
About the JA80
The Jadis JA80 is a French pure-Class-A valve monoblock power amplifier. The model originated in the 1980s and has appeared in several revisions; specifications differ between the original JA80 and the later JA80 MkII. The original version is generally specified at approximately 60 W RMS per monoblock, using four KT88-family output tubes, while the MkII is commonly specified at 60 W with conventional output tubes and up to 90 W when fitted with KT150 tubes. It uses transformer-coupled push-pull output stages, automatic bias, selectable loudspeaker impedance taps, and a single line-level RCA input per monoblock. The current Jadis product information identifies the JA80 as a continuing MkII product rather than a discontinued amplifier; therefore, this record refers to the JA80 MkII unless explicitly identified as original-version data.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 90W @ 8Ω
- Amplifier Class
- A
- Input Sensitivity
- 0.5V RMS
Analog Output
Analog signal output specifications
- Output Impedance
- 8Ω
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Digital Inputs
- RCA
- Analog Inputs
- RCA
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 625 × 240 × 260 mm (W × H × D)
- Weight
- 35 kg (77 lbs)
Key Specifications
Impedance: 8Ω
Power: 90W
Frequency: 20-27000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions