Jadis 845SE Triode Monoblock Amplifier Pair - New In Box - Super Rare


Super rare find from an avid Jadis collector who was in the process of putting together a huge Jadis system that was unfortunately never finished.

These are their 845SE tube based monoblocks amplifiers

We actually have another set of these amplifiers (currently available) that are barely used/mint, so we hooked them up to our Wilson X-1 Grand SLAAM speakers for testing. We were treated to the best dynamics and ease we've ever heard from them by FAR. 

This model is also no longer in production.

Retail price in 1992 was $20,000 ($38,000 in today's dollars).

These are also 110V which are even harder to find.

Type: Triode single ended monoblock 
Bias: Autobias 
Power: 20W class-A 
Bandwidth: 20Hz to 22kHz 
Sensitivity: 500mV 
Number of blocks:
Tubes list: 2 x 845, x2 6NS7, 2 x ECC83 
Dimensions: 26" x 12" x 9.5" (65 x 30 x 24 cm) 
Weight: 77 lbs. (35 kg)
Consumption: 200W per unit 

Complete list of Jadis pieces currently available from SkyFi:
845 SE Amplifier Pair 
845 SE Amplifier Pair - New
845 SE Amplifier Pair - New
JA800 6 Chassis Amplifier - New
JD1 CD Transport
JF2 4 Chassis Crossover - New [JF3]
JS1 MKII 2 Chassis DAC - New
JPS2 2 Chassis Preamp Line Stage 
Jadis JP200S [JP200MC] 4 Chassis Preamp - New

The SkyFi Testing Process for Tube Amplifiers:
We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Capacitors are checked for telltale sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and tubes are inspected for signs of stress overheating or cracking.

We then power up the unit carefully and run a simple 1k sine wave while monitoring the output on an oscilloscope for signs of distortion or noise. Finally we run the amplifier to its full rated power into the appropriate resistive load provided by our Sencore amplifier tester. If there is an issue, it will usually be noticeable at this point. If it all looks clean we will often test for THD (Total Harmonic Distortion) measured by our Keithley distortion meter, and compare it against the original manufacturers specifications. The amplifier the remains powered on to "burn in" on our test bench for a few hours to make sure there are no heat related issues. If there are balanced inputs available they will also be tested.

We also test all tubes for output gain and leakage on our calibrated B&K 747 tester against the original manufacturers specifications. If needed, the tubes will be replaced from our vast NOS (New Old Stock) vintage or modern inventory. 
Final testing involves pushing actual music thorough the amplifier. We've learned over time that some issues are only noticeable to a trained ear while listening to familiar source material. Our test bench has reference vintage Kef speakers that we're very familiar with which quickly reveal any discrepancies. Some amplifiers will then move into our listening room where they are tested with our in-house reference speakers of choice.

Please click here for detailed specifics regarding our specialized packing process that separates us from the rest.



Original Box





Not Applicable


Yes - Power

Physical Condition


Working Condition


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