Electro Harmonix EL84 matched quad

€47.95
In stock

Electro-Harmonix EL84 matched quad
The small powerpentode used in many guitar amps of, among others, VOX, Fender and Mesa Boogie.
Set of four.

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More Information
Tube type EL84
Manufacturer/Brand Electro-Harmonix
Production New
Tube kind Powertube
Construction Pentode
Pin Layout Noval 9 pins
Country of Manufacture Russia

Electro-Harmonix EL84 matched quad
The EL84 developed in the Philips Physics Laboratory in Eindhoven (NatLab) and introduced in 1953 in Mullard radios. The EL84 was introduced as a cost effective alternative to the EL34 especially when it was used in so-called 'Table-top' radios where driver tubes could be omitted in these designs due to the easy control of the EL84. Now the EL84 is used in old VOX, Fender, Mesa Boogie guitar amplifiers and as a new application in headphone amplifiers.

Electro-Harmonix
Electro-Harmonix is a New York based company that has gained notoriety through guitar effect pedals. Started in 1968 by an audio technician and an ex-employee of IBM Mike Matthews, who is also a Rhytm & Blues pianist. In the nineties, Electro-Harmonix was taken over by the New Sensor company, which is also located in New York. New Sensor has its own tube plant in Saratov Russia where it has its tubes made under strict supervision from the EH USA. Now that Electro-Harmonix has 50 years of experience within the music world, we at TubeDirect are convinced we have chosen a reliable partner for the supply of new tubes.

In addition to the Electro-Harmonix EL34, we also sell versions of the EL34 from Mullard and TAD

Matched tubes
 
This set of tubes is matched. This means that the measured values of the tubes fall within the same range and thus perform equally.
This is important for two reasons:
1. To obtain the same gain factor per tube.
2. For the same amount of quiescent current per tube.
The first requirement speaks for itself and the second requirement prevents the one tube where a higher quiescent current or bias is needed to make it work in the linear region will also be worn out earlier. Both new tubes and our NOS tubes can be ordered separately.