Tung-Sol EL34B matched quad

In stock

Tung-Sol EL34B matched pair

The EL34, the pentode used in many guitar amplifiers by, among others, Marshall and in many audio amplifiers.
Set of two.

This item is in stock;
Ordered before 16 PM will be shipped the same workday;
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More Information
Tube type EL34
Manufacturer/Brand Tung-Sol
Production New
Tube kind Powertube
Construction Pentode
Pin Layout Noval 9 pins
Country of Manufacture Russia

Tung-Sol EL84 / 6BQ5
The EL34 developed in the Physics Laboratory of Philips in Eindhoven (NatLab) and introduced in 1949 by Mullard manufactures with the aforementioned patented surpressor grid making it together with the other four electrodes namely the Cathode, the Anode, the Steering Grid, the Screen Grid. so-called pentode tube arose, pentode derived from Ancient Greek Penta which means five.

Tung-Sol Lamp Works was founded in 1907 in Newark, NJ USA. The name Tung-Sol is a contraction of Tungsten or tungsten the element where the filaments in tubes and light bulbs are made and Sol what in Latin means sun. Advertising for Tung-Sol car bulbs Since the 1920s, Tung-Sol also started producing other electronic products, including electron tubes. Tung-Sol strived for perfection of its products by means of a manufacturing process under laboratory standards and strict quality control. The best known tube from Tung-Sol is the 6550 marketed in 1955 in response to the Genalex / Marconi KT88. The 6550 is a so-called 'beam tetrode' and can be found in amplifiers with a lot of power, for example in the Ampeq SVT bass amplifiers and Marshalls 50 and 100 Watt guitar amplifiers for the American market. We sell Tung-Sol 12AX7 as the 'premium choice' 12AX7 signal tube and try to have further NOS signal tubes in our range from Tung-Sol.

In addition to the our EL34B from Tung-Sol, we also sell the premium EL34 from Mullard, Electro Harmonix 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.