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Sylvania 6550 - matched pair

Sylvania 6550 - welded plates
Sylvania 6550 - welded plates
Price: $179.00
1 matched pair in stock
Item Number: 682_1
Manufacturer: Sylvania


What is the manufacturer and model of your amplifier?

The 1970s Sylvania 6550 power tubes in this precisely matched pair have welded gray plates, 3 getters,
and metal collar bases. The blue or green print on the glass has the PhilipsECG logo. 

Both tubes test as new and are matched for both current draw (mA) and transconductance (Gm). Our power tubes are burned in and tested on a laboratory grade Amplitrex AT1000 tube tester (fixed bias mode, manual setting). They are screened for shorts, gas, leakage, and noise. We test and match tubes for both current draw (mA) and transconductance (Gm) at typical operating conditions for no extra charge.


Tubes ship in new white boxes with test results
. These tubes are sold as a matched pair. Photo is a sample pair from the lot.
TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio enthusiasts. Our website features secure payment options and fast, convenient shipping around the world.

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