Tech Corner > Tubes

STC 4212E

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stevenvalve:
Have a look at a monster valve,  the 4212E, I scored just one tube, It looks unused, They are just massive, I think peter uses these.

https://www.youtube.com/watch?v=8LUIeZJEoAk

kajak12:
if only your man hood was that big you could be a star  ;)

Peter A:
Steve,

I certainly use these tubes.  One STC 4212E tube per monoblock.  The Chinese are making WE212 tubes.  Not cheap.

CullLowry:
What are the specifications for the tubes?
Also how i can build the AMP required for my application using this?
Can it is replaceable by transistor also?
If yes then which transistor?

https://www.7pcb.com

stevenvalve:
See attachment for STC 4212E circuit.  Peter is selling his amps if anyone is interested. They include extra E80CC, TT21, STC 4212E and 5R4WGT tubes. He is using Philips Holland E80CC input tube into a TT21 GEC tube driving the STC 4212E tube.  Using five 5R4GY tubes. Peter can give you more info. This amp must be the ultimate audio amplifier for horsepower using this giant valve / tube STC 4212E , it's a directly heated triode and in class A with 1500 volts on the anode can deliver 50 Watts. If you can find another in class B operation will deliver 960 Watts.  I will sell my new STC 4212E  if interested

http://www.r-type.org/exhib/aaa0287.htm

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