Vacuum Tube - 6550, JJ Electronics
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Product Options
- Apex Matched Pair (T-6550-JJ-MP)
- Apex Matched Quad (T-6550-JJ-MQ)
- Apex Matched Sextet (T-6550-JJ-MS)
- Apex Burned-In Matched Pair (T-6550-JJ-MPB)
- Apex Burned-In Matched Quad (T-6550-JJ-MQB)
- Apex Burned-In Matched Sextet (T-6550-JJ-MSB)
This product has substitutes available! Check them out.
The JJ Electronic 6550 is a robust tube built in the rugged fashion that JJ is famous for. At 35 Watts, these tubes have a warm round tone with a thick and defined low end. The JJ 6550 is an excellent choice for bass heads, tube organs, and Hi-Fi amplifiers.
Matched versions of this tube use Apex Matching
Choose burned-in tubes for maximum stability and performance.
RoHS Compliant
Accessory Items:
| Single or Matched | Our Part Number | UPC/EAN | JJ Electronics Part Number |
|---|---|---|---|
| Apex Matched Pair | T-6550-JJ-MP | 609722127516 | |
| Apex Matched Quad | T-6550-JJ-MQ | 609722127523 | |
| Apex Burned-In Matched Pair | T-6550-JJ-MPB | 841358101953 | |
| Apex Matched Sextet | T-6550-JJ-MS | 609722127530 | |
| Apex Burned-In Matched Quad | T-6550-JJ-MQB | 841358101960 | |
| Apex Burned-In Matched Sextet | T-6550-JJ-MSB | 841358101977 | |
| Single | T-6550-JJ | 609722127509 | 6550 |
| Body Height | 110 mm | |
| Cathode Current (Ik) | ≤ 175 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Grid 1 voltage (Ug1) | ≥ -300 V, -14 V typical | |
| Grid 2 current (Ig2) | ≤ 12 mA | |
| Grid 2 dissipation (Wg2) | 6 W | |
| Grid 2 voltage (Ug2) | ≤ 400 V, 250 V typical | |
| Grid capacitance (cg1) | 14 pF | |
| Grid to Plate Capacitance (ca/g) | 0.85 pF | |
| Internal Resistance (Ri) | 16 kΩ | |
| Item Diameter | 43 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 12 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 35 W | |
| Plate Voltage (Ua) | ≤ 600 V, 250 V typical | |
| Transconductance (S) | 11.8 mA/V |
| Packaging Dimensions | Apex Burned-In Matched Pair version | T-6550-JJ-MPB | 5 in. × 3.8 in. × 1.9 in. |
| Apex Burned-In Matched Quad version | T-6550-JJ-MQB | 5 in. × 3.8 in. × 3.8 in. | |
| Apex Burned-In Matched Sextet version | T-6550-JJ-MSB | 5.6 in. × 5 in. × 3.8 in. | |
| Apex Matched Pair version | T-6550-JJ-MP | 5 in. × 3.8 in. × 1.9 in. | |
| Apex Matched Quad version | T-6550-JJ-MQ | 5 in. × 3.8 in. × 3.8 in. | |
| Apex Matched Sextet version | T-6550-JJ-MS | 5.6 in. × 5 in. × 3.8 in. | |
| Single version | T-6550-JJ | 1.9 in. × 1.9 in. × 5 in. | |
| Weight (Packaging) | Apex Burned-In Matched Pair version | T-6550-JJ-MPB | 0.38 lbs. |
| Apex Burned-In Matched Quad version | T-6550-JJ-MQB | 0.76 lbs. | |
| Apex Burned-In Matched Sextet version | T-6550-JJ-MSB | 1.14 lbs. | |
| Apex Matched Pair version | T-6550-JJ-MP | 0.38 lbs. | |
| Apex Matched Quad version | T-6550-JJ-MQ | 0.76 lbs. | |
| Apex Matched Sextet version | T-6550-JJ-MS | 1.14 lbs. | |
| Single version | T-6550-JJ | 0.19 lbs. |
| T-6550-JJ-MP - Apex Matched Pair version | Body Height | 110 mm |
| Cathode Current (Ik) | ≤ 175 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Grid 1 voltage (Ug1) | ≥ -300 V, -14 V typical | |
| Grid 2 current (Ig2) | ≤ 12 mA | |
| Grid 2 dissipation (Wg2) | 6 W | |
| Grid 2 voltage (Ug2) | ≤ 400 V, 250 V typical | |
| Grid capacitance (cg1) | 14 pF | |
| Grid to Plate Capacitance (ca/g) | 0.85 pF | |
| Internal Resistance (Ri) | 16 kΩ | |
| Item Diameter | 43 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 12 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 35 W | |
| Plate Voltage (Ua) | ≤ 600 V, 250 V typical | |
| Transconductance (S) | 11.8 mA/V | |
| T-6550-JJ-MQ - Apex Matched Quad version | Body Height | 110 mm |
| Cathode Current (Ik) | ≤ 175 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Grid 1 voltage (Ug1) | ≥ -300 V, -14 V typical | |
| Grid 2 current (Ig2) | ≤ 12 mA | |
| Grid 2 dissipation (Wg2) | 6 W | |
| Grid 2 voltage (Ug2) | ≤ 400 V, 250 V typical | |
| Grid capacitance (cg1) | 14 pF | |
| Grid to Plate Capacitance (ca/g) | 0.85 pF | |
| Internal Resistance (Ri) | 16 kΩ | |
| Item Diameter | 43 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 12 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 35 W | |
| Plate Voltage (Ua) | ≤ 600 V, 250 V typical | |
| Transconductance (S) | 11.8 mA/V | |
| T-6550-JJ-MS - Apex Matched Sextet version | Body Height | 110 mm |
| Cathode Current (Ik) | ≤ 175 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Grid 1 voltage (Ug1) | ≥ -300 V, -14 V typical | |
| Grid 2 current (Ig2) | ≤ 12 mA | |
| Grid 2 dissipation (Wg2) | 6 W | |
| Grid 2 voltage (Ug2) | ≤ 400 V, 250 V typical | |
| Grid capacitance (cg1) | 14 pF | |
| Grid to Plate Capacitance (ca/g) | 0.85 pF | |
| Internal Resistance (Ri) | 16 kΩ | |
| Item Diameter | 43 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 12 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 35 W | |
| Plate Voltage (Ua) | ≤ 600 V, 250 V typical | |
| Transconductance (S) | 11.8 mA/V | |
| T-6550-JJ-MPB - Apex Burned-In Matched Pair version | Body Height | 110 mm |
| Cathode Current (Ik) | ≤ 175 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Grid 1 voltage (Ug1) | ≥ -300 V, -14 V typical | |
| Grid 2 current (Ig2) | ≤ 12 mA | |
| Grid 2 dissipation (Wg2) | 6 W | |
| Grid 2 voltage (Ug2) | ≤ 400 V, 250 V typical | |
| Grid capacitance (cg1) | 14 pF | |
| Grid to Plate Capacitance (ca/g) | 0.85 pF | |
| Internal Resistance (Ri) | 16 kΩ | |
| Item Diameter | 43 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 12 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 35 W | |
| Plate Voltage (Ua) | ≤ 600 V, 250 V typical | |
| Transconductance (S) | 11.8 mA/V | |
| T-6550-JJ-MQB - Apex Burned-In Matched Quad version | Body Height | 110 mm |
| Cathode Current (Ik) | ≤ 175 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Grid 1 voltage (Ug1) | ≥ -300 V, -14 V typical | |
| Grid 2 current (Ig2) | ≤ 12 mA | |
| Grid 2 dissipation (Wg2) | 6 W | |
| Grid 2 voltage (Ug2) | ≤ 400 V, 250 V typical | |
| Grid capacitance (cg1) | 14 pF | |
| Grid to Plate Capacitance (ca/g) | 0.85 pF | |
| Internal Resistance (Ri) | 16 kΩ | |
| Item Diameter | 43 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 12 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 35 W | |
| Plate Voltage (Ua) | ≤ 600 V, 250 V typical | |
| Transconductance (S) | 11.8 mA/V | |
| T-6550-JJ-MSB - Apex Burned-In Matched Sextet version | Body Height | 110 mm |
| Cathode Current (Ik) | ≤ 175 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Grid 1 voltage (Ug1) | ≥ -300 V, -14 V typical | |
| Grid 2 current (Ig2) | ≤ 12 mA | |
| Grid 2 dissipation (Wg2) | 6 W | |
| Grid 2 voltage (Ug2) | ≤ 400 V, 250 V typical | |
| Grid capacitance (cg1) | 14 pF | |
| Grid to Plate Capacitance (ca/g) | 0.85 pF | |
| Internal Resistance (Ri) | 16 kΩ | |
| Item Diameter | 43 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 12 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 35 W | |
| Plate Voltage (Ua) | ≤ 600 V, 250 V typical | |
| Transconductance (S) | 11.8 mA/V | |
| T-6550-JJ - Single version | Body Height | 110 mm |
| Cathode Current (Ik) | ≤ 175 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Grid 1 voltage (Ug1) | ≥ -300 V, -14 V typical | |
| Grid 2 current (Ig2) | ≤ 12 mA | |
| Grid 2 dissipation (Wg2) | 6 W | |
| Grid 2 voltage (Ug2) | ≤ 400 V, 250 V typical | |
| Grid capacitance (cg1) | 14 pF | |
| Grid to Plate Capacitance (ca/g) | 0.85 pF | |
| Internal Resistance (Ri) | 16 kΩ | |
| Item Diameter | 43 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 12 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 35 W | |
| Plate Voltage (Ua) | ≤ 600 V, 250 V typical | |
| Transconductance (S) | 11.8 mA/V |
 Specification Sheet | All Models |
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