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JA80

Name: Jadis JA80
Brand: Jadis

Jadis

JA Series

AmplifiersPower AmplifiersTube Amplifiers

Estimated price (community-sourced)

$4,000 - $29,300

About the JA80

The Jadis JA80 is a pure Class A monoblock tube power amplifier, originally introduced in 1983 and repeatedly updated while retaining its flagship status in the Jadis range. It operates in a push-pull configuration with triple-load output transformers and automatic (autobias) biasing, and can be configured for a wide range of loudspeaker impedances via its output transformer taps. The JA80 is designed to work with various power pentodes, including KT120, KT90, KT88, 6550, 6CA7, and EL34, and in its Mk II iteration it adds full compatibility with KT150 output valves while maintaining up to 90 W per channel in pure Class A operation. Typical tube complement in Mk II form is 4x KT150 (or compatible pentodes) plus ECC82 and ECC83 driver tubes per channel, with bandwidth specified at approximately 20 Hz to 27 kHz and sensitivity around 500 mV.

Specifications

Key Specifications

Sensitivity: 500 dB

Impedance: 8Ω

Power: 90W

Frequency: 20-27000 Hz

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