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6550 / SV6550C SED "Winged C" new production - premium matched
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Price: Starting at $34.50
SOLD OUT - PLEASE CHECK BACK SOON!
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 Please note: SED 6550C / SV6550C tubes will not be available again until later this summer. In the mean time, we highly recommend the new production Tung-Sol 6550 or Genalex Gold Lion KT88 tubes as an alternative. Thanks for your patience.
This is the highly regarded SED 6550C / SV6550C. These current production tubes are constructed with a gold-plated molybdenum alloy grid and carbon-coated screen grid. All ratings of the SED SV6550C meet or exceed those of the original version; top-quality cathode materials and extensive aging yield outstanding performance in high-fidelity and musical-instrument amplifiers.
The SED SV6550C is made exclusively at the SED SPb factory in St. Petersburg and they bear the "Winged C" logo. This is the factory that made the famous Svetlana tubes before the New Sensor folks grabbed that name and started using it on other tubes not made by the original Svetlana factory in St. Petersburg. If you want the authentic Svetlana tubes, look for the "Winged C".
They have been burned in, thoroughly tested at 500v on the AT1000, and premium matched for both transconductance (Gm) and plate current (mA). Learn more about our burn-in and testing process here. This burn-in and matching service is included in the prices listed here.
Choose from precisely matched pairs, quads, sextets or octets. Higher quantities of matched tubes are available--please inquire for availability.
Photo is a sample from the lot. Tubes ship in the SED provided retail boxes.
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Price: Starting at $1,109.00
Sale Price: Starting at $909.38
The GE 6550A power tubes in this premium matched octet have crimped gray plates, 3 getters, metal collar bases, and matching date codes. Tubes test as new and are precisely matched. While supplies last!
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Price: Starting at $290.00
Sale Price: Starting at $237.80
The GE 6550A power tubes in this premium matched pair have gray plates, 3 getters, metal collar bases, and matching date codes. Tubes test as new and are precisely matched. While supplies last!
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Price: Starting at $540.00
Sale Price: Starting at $442.80
The GE 6550A power tubes in this premium matched quad have gray plates, 3 getters, metal collar bases, and matching date codes. Tubes test as new and are precisely matched. While supplies last!
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Price: $910.00
Sale Price: $746.20
You Save: $163.80 (18 %)
The GE 6550A power tubes in this premium matched sextet have gray plates, 3 getters, metal collar bases, and matching date codes. Tubes test as new and are precisely matched. While supplies last!
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Price: Starting at $34.50
Sale Price: Starting at $31.05
These new production Tung-Sol 6550 power tubes are based on the original type 3 Tung-Sol 6550 made in the 1960s. Prices include extended burn-in and precision matching.
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Price: Starting at $49.50
These KT88 power tubes are made exclusively at the SED SPb factory in St. Petersburg and they bear the "Winged C" logo. The current production SED SVKT88 tubes meet or exceed the original version. Prices include extended burn-in and precision matching.
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Price: Starting at $53.50
Sale Price: Starting at $48.15
These new production Genalex Gold Lion KT88 power tubes are based on the original Marconi-Osram Valve Co. made in the 1960s. Prices include extended burn-in and precision matching.
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Product Reviews
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TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar players, DIY tube audio enthusiasts, and audiophiles.
We also offer high quality and hard to find parts for DIY tube amplifier projects.
Our website features secure payment options and fast, convenient shipping around the world.
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