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Originally made by Marconi-Osram Valve Co. (Genalex) in England, the famed N709 EL84 power tube is once again available.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.

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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

Unsure

Fixed Bias (power tubes are biased manually)

Auto Bias / Cathode Bias (no manual adjustment needed)

3. Which specifications are closest to your amp's operating conditions? Why we ask

Unsure (we will send you a standard matched set)

Standard Match (no additional cost)
Plate: 250 V
Screen: 250 V
Grid Bias: -7.3 V

Standard Match (no additional cost)
Plate: 320 V
Screen: 320 V
Grid Bias: -11.0 V

Custom Match ($6 per tube)
We will custom match a set of power tubes to the specifications you provide below (+ $6.00)

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

Quantity:

Related Products

Sovtek EL84M / 6BQ5WA - precision matched

Price: $14.50

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.