Jadis I35
Jadis I35 valve integrated amplifier, fitted with an active preamplifier and delivering 30 watts in pure class A.
Description
The Jadis I35 is a valve integrated amplifier combining an active preamplification stage with a power stage operating in pure class A. This architecture allows it to drive speakers directly without the need for a separate preamplifier, whilst retaining the sonic qualities specific to valve amplifiers.
The power stage delivers up to 30 watts in class A, an operating mode renowned for its linearity and its ability to convey the nuances of musical signals. Automatic bias simplifies the adjustment and maintenance of the power valves, which may be KT88, KT120 or 6CA7 depending on the set installed, paired with ECC83 and ECC82 valves for the preamplification stage. The bandwidth extends from 20 Hz to 20 kHz at -3dB, with a sensitivity of 100 mV. The unit offers five line inputs and two speaker outputs, the latter allowing for bi-wiring of the speakers.
This model is aimed at valve sound enthusiasts seeking an integrated amplifier capable of simplifying a stereo system while retaining the sonic pleasure of a class A power stage, for systems where bi-wiring and a five line-input connectivity provide genuine flexibility of use.
Technical specifications
| Power | 30W class A |
| Bandwidth | 20Hz to 20kHz @-3dB |
| Sensitivity | 100mV |
| Valves | 4 x KT88/KT120/6CA7, 2 x ECC83, 3 x ECC82 |
| Connectivity | 5 line inputs, 2 speaker outputs (bi-wiring) |
| Dimensions (H × W × D) | 485x345x240mm |
| Weight | 34Kg |
What to check before buying used
The power valves (KT88, KT120 or 6CA7) and preamplification valves (ECC83, ECC82) are consumables to check as a priority: their condition directly affects class A operation, and their origin and wear should be verified. The automatic bias should be tested at power-up to ensure it correctly stabilises the bias current. A check of the line inputs and speaker outputs, particularly in a bi-wiring configuration, allows for verifying the absence of loose contacts on this amplifier, which may have run hot for extended periods during its use.
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