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Preamp Tubes
12AT7/ ECC81
12AU7/ ECC82 / 5814
12AX7 / ECC83 / 7025
12AY7 / 6072
12BH7
12DW7 / ECC832 / 7247
6DJ8 / EF86 / 6 Volt
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Misc. Power Tubes
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5U4GB
5Y3
6X4
6CA4 / EZ81
Misc. Rectifier Tubes
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Ei
Electro Harmonix
Genalex - Gold Lion
Jan Military Tubes
JJ Electronics
Mullard
NOS Tubes
Penta Labs
Ruby Tubes
Sovtek
Svetlana
Tung-Sol
Tube Amp Doctor (TAD)
Valve Art
Gear
Accessories
Pre-Owned Gear
Tube Kits
Mesa Boogie
Marshall
Fender
Vox
Egnater
Peavey
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Manley Labs
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Pre-Owned Hifi
HH Scott
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Home
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6550 / KT88 / KT90
»
Ruby 6550A-STR
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Ruby 6550A-STR
Rating
Early Distortion
Average Distorion
Late Distortion
Options
Single(1 tube)
Matched Pair(2 tubes)
Matched Quad(4 tubes)
Matched Sextet(6 tubes)
Early Distortion / Single(1 tube)
Early Distortion / Matched Pair(2 tubes)
Early Distortion / Matched Quad(4 tubes)
Early Distortion / Matched Sextet(6 tubes)
Average Distorion / Single(1 tube)
Average Distorion / Matched Pair(2 tubes)
Average Distorion / Matched Quad(4 tubes)
Average Distorion / Matched Sextet(6 tubes)
Late Distortion / Single(1 tube)
Late Distortion / Matched Pair(2 tubes)
Late Distortion / Matched Quad(4 tubes)
Late Distortion / Matched Sextet(6 tubes)
$ 59.95
Quantity
This item is a recurring or deferred purchase. By continuing, I agree to the
cancellation policy
and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted.
is backordered. We will ship it separately in 10 to 15 days.
Ruby 6550A-STR. This Ruby tube is a Sino Chinese Shuguang copy of the straight bottle GE 6550 - selected by RUBY with their 6 month warranty!
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