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6550 / 6550A GE - premium matched sextet
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Product Options
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The GE 6550A power tubes in this premium matched sextet have crimped gray plates, 3 getters, and metal collar bases. The white print on the glass has the GE logo, matching date codes, and 188-5 factory code (Owensboro, Ky). The glass is etched
with "6550A U.S.A." and the dot pattern characteristic of GE tubes. See "product options" for photos and more information about each sextet.
These tubes are unused other than a 48-hour burn-in period prior to testing them at 500 volts on the laboratory grade AT1000. It is very hard to find matched sextets of vintage power tubes like these--grab them while supplies last!
Tubes test as new and are precisely matched to within 5% or less for both transconductance (Gm) and plate current (mA). Tubes ship in white
boxes.
These tubes are sold as premium matches. Photos are of actual tubes. Coupon codes do not apply.
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Price: Starting at $34.50
These 6550 power tubes are made exclusively at the SED SPb factory in St. Petersburg and they bear the "Winged C" logo. The current production SED SV6550C tubes meet or exceed the original version. 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 $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 $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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