What sets the TAD EL84 apart from other tubes is its heavy duty construction, featuring a thick glass envelope as well as premium cathode and plate materials and gold grid wire. This is a great replacement for any EL84 based amplifier.

EL509 power tube, JJ Brand. Please note that this is an 8 pin tube that has no plate cap. It is not interchangeable with NOS EL509s.

The E34L has a slightly higher grid voltage rating (-13.5 to-16.5 vs -10 to -13.5 volts) than the traditional EL34 vacuum tube. The blue glass is purely for aesthetics. For the same idle plate current value, the E34L is typically biased with a more negative grid voltage than the EL34. This allows the E34L to offer more headroom (later breakup) than the traditional EL34. Available in Singles, Matched Pairs or Matched Quads - please select from list.

Octal power tube (Max Plate Watts = 25W) Sensational new high-gain (Gm) EL34 tube with very dynamic tone. Extra strong military grade construction with gold plate grid. Perfect for High-End HiFi and best choice for all Marshall®, Hiwatt®, Orange® etc. to achieve that big tone they became famous for. Very close to the legendary UK made Mullard EL34. The TAD EL34B-STR can replace any 6CA7 or KT77.