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AccessoriesJJ Tesla / ECC83/ECC803S-JJ TESLA MATCHED PAIR
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All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.
The JJ ECC803S is a warm sounding large long anode plate designed ECC83. JJ has used long 17mm plate design used in the 1950s by Mullard with a longer fin to improve heat dissipation. The valve features gold plated grid, top getter and a spiral filament to reduce hum and noise.
The ECC803S is an excellent sounding valve which is ideally suited to audio applications. It produces a rich warm sound which is both thick and fat. The valve is musical and well balanced; it is easy to listen to with no harshness and it has plenty of detail in the upper mids with a fast smooth bass response.
Guitar Amplifiers
I would not use these in guitar combos or high gain stages this is because the long plate structure it is susceptible to the vibration and excessive microphonics. I would only use these in guitar heads with vintage voiced pre amp sections such as old Marshall Superlead heads.
For combos and High gain amps the JJ ECC83S is a better choice and will last longer. So we do not recommend the use of the ECC803S in these applications
Audio amplifiers.
This is a clear winner as the smooth openness of the sound is great at removing hardness from modern digital equipment. The valve provides excellent performance and a low cost upgrade to the Chinese 12AX7 that is supplied in modern Hi-Fi equipment.
We offer these in Specially Selected Balanced triode sections in matched pairs for Audio Phono stages, Phase splitters, Audio & Tube microphones.
These Balanced preamp valves are Dynamically Drive tested under real working condition and are matched on dB gain. They also have passed the following tests:
Gain (db) Drive Tested
Transconductance (gm) Drive Tested
Output Drive Tested
Noise 1 (signal to noise)
Noise 2 (Aural)
Microphonics Test 1(Ambient)
Microphonic Test 2 (Shock)
Cathode Test
Grid Leakage Test
All prices contained on this page are exclusive of VAT. This is currently charged at 20% and is payable by the UK only.
The JJ factory was born out of the ashes of the former Tesla factory.
They currently make a range of High quality valves based on some of Tesla most famous designs.
Special Matched PairsThe JJ ECC803S is a warm sounding large long anode plate designed ECC83. JJ has used long 17mm plate design used in the 1950s by Mullard with a longer fin to improve heat dissipation. The valve features gold plated grid, top getter and a spiral filament to reduce hum and noise.
The ECC803S is an excellent sounding valve which is ideally suited to audio applications. It produces a rich warm sound which is both thick and fat. The valve is musical and well balanced; it is easy to listen to with no harshness and it has plenty of detail in the upper mids with a fast smooth bass response.
Guitar Amplifiers
I would not use these in guitar combos or high gain stages this is because the long plate structure it is susceptible to the vibration and excessive microphonics. I would only use these in guitar heads with vintage voiced pre amp sections such as old Marshall Superlead heads.
For combos and High gain amps the JJ ECC83S is a better choice and will last longer. So we do not recommend the use of the ECC803S in these applications
Audio amplifiers.
This is a clear winner as the smooth openness of the sound is great at removing hardness from modern digital equipment. The valve provides excellent performance and a low cost upgrade to the Chinese 12AX7 that is supplied in modern Hi-Fi equipment.
We offer these in Specially Selected Balanced triode sections in matched pairs for Audio Phono stages, Phase splitters, Audio & Tube microphones.
These Balanced preamp valves are Dynamically Drive tested under real working condition and are matched on dB gain. They also have passed the following tests:
Gain (db) Drive Tested
Transconductance (gm) Drive Tested
Output Drive Tested
Noise 1 (signal to noise)
Noise 2 (Aural)
Microphonics Test 1(Ambient)
Microphonic Test 2 (Shock)
Cathode Test
Grid Leakage Test
Comments
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