Vacuum Tube - 6550, Tung-Sol Reissue
Copy of the original type 3 Tung-Sol 6550 made in the 1960s. Triple getter, carbonized screen, and gold plated grid. The current production benchmark of the classic 6550. Made in Saratov, Russia
Matched versions of this tube use Apex Matching
RoHS Compliant
Accessory Items:
Single or Matched | Our Part Number | UPC/EAN |
---|---|---|
Apex Matched Pair | T-6550-TUNG-MP | 609722129800 |
Apex Matched Quad | T-6550-TUNG-MQ | 609722129817 |
Apex Matched Sextet | T-6550-TUNG-MS | 609722129824 |
Single | T-6550-TUNG | 683274021140 |
Bulb Temperature | 250°C | ||
Capacitance, grid to plate | 0.8 pF | ||
Capacitance, input | 15 pF | ||
Capacitance, output | 10 pF | ||
Cathode Current (Ik) | 190 mA | ||
Grid 1 Voltage | -300 V | ||
Grid 2 Dissipation | 6 W | ||
Grid 2 Voltage, Pentode | 440 V | ||
Grid 2 Voltage, Triode | 500 V | ||
Grid Circuit Resistance (Rg), Fixed Bias | 50 kΩ | ||
Grid Circuit Resistance (Rg), Self Bias | 250 kΩ | ||
Heater Cathode Voltage, Negative | 300 V | ||
Heater Cathode Voltage, Positive | 100 V | ||
Heater Current | 1.6 A | ||
Heater Voltage | 6.3 V | ||
Plate Dissipation (Wa) | 42 W | ||
Plate Voltage (Ua) | 660 V |
Packaging Dimensions | Apex Matched Pair version | T-6550-TUNG-MP | 5.6 in. × 4.4 in. × 2.1 in. |
Apex Matched Quad version | T-6550-TUNG-MQ | 5.6 in. × 4.4 in. × 4.4 in. | |
Apex Matched Sextet version | T-6550-TUNG-MS | 6.4 in. × 5.6 in. × 4.4 in. | |
Single version | T-6550-TUNG | 2.1 in. × 2.1 in. × 5.5 in. | |
Weight (Packaging) | Apex Matched Pair version | T-6550-TUNG-MP | 0.45 lbs. |
Apex Matched Quad version | T-6550-TUNG-MQ | 0.9 lbs. | |
Apex Matched Sextet version | T-6550-TUNG-MS | 1.35 lbs. | |
Single version | T-6550-TUNG | 0.225 lbs. |
T-6550-TUNG-MP - Apex Matched Pair version | Bulb Temperature | 250°C |
Capacitance, grid to plate | 0.8 pF | |
Capacitance, input | 15 pF | |
Capacitance, output | 10 pF | |
Cathode Current (Ik) | 190 mA | |
Grid 1 Voltage | -300 V | |
Grid 2 Dissipation | 6 W | |
Grid 2 Voltage, Pentode | 440 V | |
Grid 2 Voltage, Triode | 500 V | |
Grid Circuit Resistance (Rg), Fixed Bias | 50 kΩ | |
Grid Circuit Resistance (Rg), Self Bias | 250 kΩ | |
Heater Cathode Voltage, Negative | 300 V | |
Heater Cathode Voltage, Positive | 100 V | |
Heater Current | 1.6 A | |
Heater Voltage | 6.3 V | |
Plate Dissipation (Wa) | 42 W | |
Plate Voltage (Ua) | 660 V | |
T-6550-TUNG-MQ - Apex Matched Quad version | Bulb Temperature | 250°C |
Capacitance, grid to plate | 0.8 pF | |
Capacitance, input | 15 pF | |
Capacitance, output | 10 pF | |
Cathode Current (Ik) | 190 mA | |
Grid 1 Voltage | -300 V | |
Grid 2 Dissipation | 6 W | |
Grid 2 Voltage, Pentode | 440 V | |
Grid 2 Voltage, Triode | 500 V | |
Grid Circuit Resistance (Rg), Fixed Bias | 50 kΩ | |
Grid Circuit Resistance (Rg), Self Bias | 250 kΩ | |
Heater Cathode Voltage, Negative | 300 V | |
Heater Cathode Voltage, Positive | 100 V | |
Heater Current | 1.6 A | |
Heater Voltage | 6.3 V | |
Plate Dissipation (Wa) | 42 W | |
Plate Voltage (Ua) | 660 V | |
T-6550-TUNG-MS - Apex Matched Sextet version | Bulb Temperature | 250°C |
Capacitance, grid to plate | 0.8 pF | |
Capacitance, input | 15 pF | |
Capacitance, output | 10 pF | |
Cathode Current (Ik) | 190 mA | |
Grid 1 Voltage | -300 V | |
Grid 2 Dissipation | 6 W | |
Grid 2 Voltage, Pentode | 440 V | |
Grid 2 Voltage, Triode | 500 V | |
Grid Circuit Resistance (Rg), Fixed Bias | 50 kΩ | |
Grid Circuit Resistance (Rg), Self Bias | 250 kΩ | |
Heater Cathode Voltage, Negative | 300 V | |
Heater Cathode Voltage, Positive | 100 V | |
Heater Current | 1.6 A | |
Heater Voltage | 6.3 V | |
Plate Dissipation (Wa) | 42 W | |
Plate Voltage (Ua) | 660 V | |
T-6550-TUNG - Single version | Bulb Temperature | 250°C |
Capacitance, grid to plate | 0.8 pF | |
Capacitance, input | 15 pF | |
Capacitance, output | 10 pF | |
Cathode Current (Ik) | 190 mA | |
Grid 1 Voltage | -300 V | |
Grid 2 Dissipation | 6 W | |
Grid 2 Voltage, Pentode | 440 V | |
Grid 2 Voltage, Triode | 500 V | |
Grid Circuit Resistance (Rg), Fixed Bias | 50 kΩ | |
Grid Circuit Resistance (Rg), Self Bias | 250 kΩ | |
Heater Cathode Voltage, Negative | 300 V | |
Heater Cathode Voltage, Positive | 100 V | |
Heater Current | 1.6 A | |
Heater Voltage | 6.3 V | |
Plate Dissipation (Wa) | 42 W | |
Plate Voltage (Ua) | 660 V |
Specification Sheet | All Models |
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Substitute Products
The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.
Product Reviews
Beautiful! I bought one to test, ultra-linear and strapped as a triode ... single ended with 5k load and 400 volts B+. Good performance.
Happy to report that I love the sound of these things in a Marshall Master Volume JMP. These replaced a pair of Winged C 6550 which i dropped on a cement floor while removing them to move the amp (bummer). These have every bit of the (very) bright, cutting, detailed sound of the Winged C that make the 6550 so worth using, but the lows, which can get very flubby and buzzy with the Svetlana or a GE are tighter and more detailed with these tubes. These also seem to have a somewhat softer, and/or more harmonically rich sound when overdriven, and are, for lack of a better phrase, less ragged sounding than Winged C or American made 6550 tubes. These are obviously made with the JCM800 in mind and they've done a great job. At this point I still would'nt use these to replace Winged C's in any other application, but these are my new tube of choice for Marshalls, where the Overdrive sound is what its all about.