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Tung-Sol 6550 reissue - precision matched

Tung-Sol 6550 reissue - premium matched
Manufacturer: Tung-Sol (reissue)
These new production Tung-Sol 6550 power tubes are based on the original type 3 Tung-Sol 6550 made in the 1960s. They have triple getters, carbonized screens, gold-plated grids, and classic coke bottle shape. This Tung-Sol reissue is manufactured in Russia by New Sensor. 
 
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 testing and matching process here.

Price is for a single tube and includes burn-in and standard matching service. Tubes ship in Tung-Sol retail boxes.

Precision Power Tube Matching

Our power tubes are burned in and then tested on a laboratory grade Amplitrex AT1000 tube tester. We match tubes for both current draw (mA) and transconductance (Gm) at typical operating conditions (plate: 500V, screen: 300V, grid bias: -30.5V).

After burn in and testing, we hand select and custom match every power tube order we receive. To do this, each power tube set is also run on a custom, fully variable test fixture that can match the operating conditions of your amplifier based on the information you provide below. This enables us to do a final check of the power tube set's performance and matching under load. Why this matters
1. What is the manufacturer and model of your amplifier?
2. How is your amp biased?   Why we ask
3. Matching notes   Why we ask
If you know the plate, screen, and grid bias voltages your amplifier uses, please note them in the comments section when you check out and we will use this information when we select and match your power tube set. (If you don't know, don't worry--we can make an educated guess based on your amp's make and model, if we don't already know the voltages it uses.) If you are a guitarist, you can also specify if you prefer early or late breakup. Thanks!

CAUTION


Price per single tube: $34.00

Enter total number of tubes needed for your matched set

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SHIPPING SCHEDULE
Orders received
Nov 22-27 will
ship Nov 28-29
.

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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