These tubes are brand new Electro-Harmonix 6CA7EH tubes that draw higher than normal plate current. We reject them in our matching process because most amps can not properly bias them so they would run too hot. These are good for those who work on their own equipment and will make resistor adjustments in the bias circuit to bring them into the appropriate bias range, or those who already have amplifiers with a very wide range of bias available. They test as new in all other respects and will carry our standard 90 day warranty.

Designed to the exacting specifications of the Philips 6CA7 tube, this classic tetrode returns to life in a big bottle design. The Electro Harmonix 6CA7 is built to withstand today's high-gain amps while still retaining the detailed tone and component integrity of the original. The 6CA7-EH A direct replacement, with military reliability, for any EL34.

From our review, "These tubes sound every bit as good as the old EI tubes and are probably my favorite tubes for Hiwatt guitar amplifiers."

Other Electro-Harmonix tubes       EL34 Tube Types