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Genalex Gold Lion EL84 / N709 / 6BQ5 reissue - precision matched

Genalex Gold Lion EL84 / N709 / 6BQ5 reissue - premium matched
Manufacturer: Genalex Gold Lion (reissue)
Originally made by Marconi-Osram Valve Co. (Genalex) in England, the famed N709 EL84 power tube is once again available. The Russian made reissue of the Genalex Gold Lion EL84 uses premium manufacturing materials such as gold plated grid wire and carbonized plate structures. The glass bottle and spacers have been engineered to reduce noise and microphonics.

These tubes have been burned in, tested at typical operating voltages on a laboratory grade Amplitrex AT1000, and precisely matched for both current draw (mA) and transconductance (Gm). Learn more about our burn-in and testing process here.

Price is for a single tube and includes burn-in and standard matching service. Tubes ship in Genalex Gold Lion retail boxes.

HIGHER VOLTAGE AMPLIFIERS--PLEASE NOTE

Many tube amplifiers run 6BQ5 / EL84 tube types over the specified maximum plate voltage ratings provided in manufacturer data sheets. This is not really a problem as long as the tubes are well matched at the actual operating voltages.

As you push a tube beyond its design limits, it increases the tube’s sensitivity to changes in the operating conditions. This means that tubes matched at 250v (plate) and 250v (screen) cannot be expected to match at 320v (plate) and 320v (screen) (these specs are the operating voltages of the Orange Tiny Terror and Vox AC30 amps). So we now offer the choice to pick tubes matched at these higher voltages.

If your amp has plate voltages above 320V, we recommend the Sovtek EL84M / 6BQ5WA which is designed for more demanding applications. We also recommend choosing the custom matching option to be sure your tubes will last as long as possible.

Precision Power Tube Matching

Our power tubes are burned in for 48 hours and tested on a laboratory grade Amplitrex AT1000 tube tester. We match tubes for both current draw (mA) and transconductance (Gm) at typical operating conditions (see #3 below) for no extra charge. We can also custom match power tubes at whatever specifications you provide (see #4 below).

The questions listed below allow you to provide optional information about your operating conditions that will help us select the best matched set of power tubes for your amplifier. Why this matters
1. What is the manufacturer and model of your amplifier?
2. How is your amp biased?   Why we ask
3. Which specifications are closest to your amp's operating conditions?  Why we ask
4. CUSTOM MATCHING ONLY: If you chose "Custom Match" above, please enter the power tube specifications for your amp
Plate Voltage
Screen Voltage
CAUTION

5. Feel free to provide more information (for example, guitarists may want to specify early or late breakup) in the comments section when you check out. Thank you!

Price per single tube: $26.50


Enter total number of tubes needed for your matched set

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Sovtek EL84M / 6BQ5WA - precision matched
The Sovtek EL84M / 6BQ5WA tube's rugged construction enables it to withstand higher plate current than other new production EL84 tube types and makes it a suitable replacement for 7189 tubes. Price includes extended burn-in and precision matching.
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TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio enthusiasts. Our website features secure payment options and fast, convenient shipping around the world.

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PLEASE NOTE: Orders placed Feb. 7-Feb. 20 will ship Tuesday Feb. 21.