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Vacuum Tube - 6550, JJ Electronics

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Vacuum Tube - 6550, JJ Electronics

Starting at: $56.95

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  • Apex Burned-In Matched Quad (T-6550-JJ-MQB)
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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.

Apex Tube Matching
Matched versions of this tube use Apex Matching
Choose burned-in tubes for maximum stability and performance.
SKU:
T-6550-JJ
Item ID:
004596
Brand:
JJ Electronics, Apex Matched
Type:
Power, Burned In
RoHS Compliant
Part Numbers
Single or MatchedOur Part NumberUPC/EANJJ Electronics Part Number
Apex Matched PairT-6550-JJ-MP609722127516
Apex Matched QuadT-6550-JJ-MQ609722127523
Apex Burned-In Matched PairT-6550-JJ-MPB841358101953
Apex Matched SextetT-6550-JJ-MS609722127530
Apex Burned-In Matched QuadT-6550-JJ-MQB841358101960
Apex Burned-In Matched SextetT-6550-JJ-MSB841358101977
SingleT-6550-JJ609722127509 6550
Body Height110 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 Diameter43 mm
Item Height125 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 Information
Packaging DimensionsApex Burned-In Matched Pair versionT-6550-JJ-MPB5 in. × 3.8 in. × 1.9 in.
Apex Burned-In Matched Quad versionT-6550-JJ-MQB5 in. × 3.8 in. × 3.8 in.
Apex Burned-In Matched Sextet versionT-6550-JJ-MSB5.6 in. × 5 in. × 3.8 in.
Apex Matched Pair versionT-6550-JJ-MP5 in. × 3.8 in. × 1.9 in.
Apex Matched Quad versionT-6550-JJ-MQ5 in. × 3.8 in. × 3.8 in.
Apex Matched Sextet versionT-6550-JJ-MS5.6 in. × 5 in. × 3.8 in.
Single versionT-6550-JJ1.9 in. × 1.9 in. × 5 in.
Weight (Packaging)Apex Burned-In Matched Pair versionT-6550-JJ-MPB0.3836 lbs.
Apex Burned-In Matched Quad versionT-6550-JJ-MQB0.7672 lbs.
Apex Burned-In Matched Sextet versionT-6550-JJ-MSB1.1508 lbs.
Apex Matched Pair versionT-6550-JJ-MP0.3836 lbs.
Apex Matched Quad versionT-6550-JJ-MQ0.7672 lbs.
Apex Matched Sextet versionT-6550-JJ-MS1.1508 lbs.
Single versionT-6550-JJ0.1918 lbs.
T-6550-JJ-MP - Apex Matched Pair versionBody Height110 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 Diameter43 mm
Item Height125 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 versionBody Height110 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 Diameter43 mm
Item Height125 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 versionBody Height110 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 Diameter43 mm
Item Height125 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 versionBody Height110 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 Diameter43 mm
Item Height125 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 versionBody Height110 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 Diameter43 mm
Item Height125 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 versionBody Height110 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 Diameter43 mm
Item Height125 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 versionBody Height110 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 Diameter43 mm
Item Height125 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

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet518.94 KB
Questions? Contact us at [email protected], or give us a call at 480-296-0890
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Product Reviews

5.00 out of 5 based on 1 reviews
Pissed Plexi - June 23rd, 2023
5 out of 5

These 6550's sound just like the old ones they replaced. Excellent! I haven't tried any other version/brand as I am happy with the JJ's. Plug and play Apex matched pair into my cathode biased Marshall SC800H(with Lynch Module)sitting on my Fender Bassbreaker 212 cab loaded with a Redback/V30 mix. No pedals. Proper Marshall bark and kerrang. Will not be going back to EL34's or 6CA7's in this amp.

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.