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AccessoriesTesla / ECC83/E83CC-TESLA ORIGINAL WL FRAME GRID 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.
Special Matched Pair
The best sounding ECC83 Type along with the Telefunken ECC803S
The Original Tesla E83CC is simply the best made and best sounding Audio valve that is bettered only by the Telefunken ECC803S. Yes This valve is sonically better than the Mullard Ladder and Box Plate ECC83 & CV4004.
These original valves used the unique frame grid design of the famous Telefunken ECC803S.
These valve were simply made without compromise they were made with very tight mechanical tolerances with each component meticulously manufactured.
The benefits of this design are that it offers a wider frequency response with greater top end detail and more definition. The more expensive production process results in a valve that is super quiet, musical and superbly balanced and therefore is a super audio valve.
The valves have the Tesla factory code 37 which as from there plant in Zavod Trinec, Czechoslovakia and come in the original box.
In guitar amplifier applications the frame grid construction provides super low microphonics.
The high pitch ring when tapping a regular ECC83 type is replaced with a quiet Thud.
This is great in the V1 position of High gain amps or if you use a boost or drive pedal to get your drive tone as it completely gets rid of the mush and hardness.
The conclusion of our test was whatever your application high end audio, Studio equipment or guitar application this valve the original tesla cannot be bettered.
An explanation of the Frame grid construction from a former valve production engineer
Standard construction of a ECC83 type is to take two vertical grid rods and wrap the grid wire around rods. The grid wire has to have a minimum strength and be of a certain minimum diameter to provide structure integrity.
Frame grid construction consists of a solid frame with the grid wire wrapped around the frame. The frame is a solid structure and so does not rely on the grid wire to provide structural integrity.
This allows the use of extremely thin grid wires with tighter turns and a closer distance between grid and cathode. The result is better high frequency performance and reduced internal microphonics.
Frame grid construction valves are more expensive to produce and require higher production skill and quality control. The only true frame grid ECC83 types was the German Telefunkens ECC803S and Czech Tesla E83CC.
This is really the best ECC83 Type you can get and a bargain when you look at the price of original Telefunken ECC803S so get these while you can
We offer these in Specially Selected matched pairs for use in High grade Compressors and Audio Phono and Pre Stages
These 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.
Tesla started production in 1922 under its original name of Radioslavia Ltd in Czechoslovakia.
It has a long history of manufacturing high quality transmitting valves and defense equipment.
The Tesla factory was known for making some outstanding valves. The Original EL34 better in terms of microphonics and reliability than the famous Mullard EL34, hence Marshall used the Tesla EL34 from the mid 1970s onwards. The frame grid E83CC was due to its construction the most expensive of it type to produce. Still to this day it is one of the best sounding ECC83/12AX7 types ever made. These are just a few of an endless list of pioneering valves produced by this great Czechoslovakian factory that sadly is no longer with us.
Original Frame GridSpecial Matched Pair
The best sounding ECC83 Type along with the Telefunken ECC803S
The Original Tesla E83CC is simply the best made and best sounding Audio valve that is bettered only by the Telefunken ECC803S. Yes This valve is sonically better than the Mullard Ladder and Box Plate ECC83 & CV4004.
These original valves used the unique frame grid design of the famous Telefunken ECC803S.
These valve were simply made without compromise they were made with very tight mechanical tolerances with each component meticulously manufactured.
The benefits of this design are that it offers a wider frequency response with greater top end detail and more definition. The more expensive production process results in a valve that is super quiet, musical and superbly balanced and therefore is a super audio valve.
The valves have the Tesla factory code 37 which as from there plant in Zavod Trinec, Czechoslovakia and come in the original box.
In guitar amplifier applications the frame grid construction provides super low microphonics.
The high pitch ring when tapping a regular ECC83 type is replaced with a quiet Thud.
This is great in the V1 position of High gain amps or if you use a boost or drive pedal to get your drive tone as it completely gets rid of the mush and hardness.
The conclusion of our test was whatever your application high end audio, Studio equipment or guitar application this valve the original tesla cannot be bettered.
An explanation of the Frame grid construction from a former valve production engineer
Standard construction of a ECC83 type is to take two vertical grid rods and wrap the grid wire around rods. The grid wire has to have a minimum strength and be of a certain minimum diameter to provide structure integrity.
Frame grid construction consists of a solid frame with the grid wire wrapped around the frame. The frame is a solid structure and so does not rely on the grid wire to provide structural integrity.
This allows the use of extremely thin grid wires with tighter turns and a closer distance between grid and cathode. The result is better high frequency performance and reduced internal microphonics.
Frame grid construction valves are more expensive to produce and require higher production skill and quality control. The only true frame grid ECC83 types was the German Telefunkens ECC803S and Czech Tesla E83CC.
This is really the best ECC83 Type you can get and a bargain when you look at the price of original Telefunken ECC803S so get these while you can
We offer these in Specially Selected matched pairs for use in High grade Compressors and Audio Phono and Pre Stages
These 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
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