KT88 / 6550

A new geometry is utilized to reduce odd order harmonics for a sweet top end while the peak power is extended to improve low frequency response. Our new glass formula body ensures long life and improved reliability. The perfect choice when the authentic sound is needed.

The price applies to one tube.

To get matched tubes you must order the number of tubes that you need and select the needed matching-option. For example: to get two quartet you must order 8 tubes and select the "quartet" matching. If you need a pair then order two tubes and choose the "pair" selection.

This beam power tetrode can be used in place of 6550 and KT88. Sounds like great big EL34.

The price applies to one tube.

To get matched tubes you must order the number of tubes that you need and select the needed matching-option. For example: to get two quartet you must order 8 tubes and select the "quartet" matching. If you need a pair then order two tubes and choose the "pair" selection.

Very credible 6550 so far.
We recommend this 6550 for bass amps which are working with 6550 tubes, especially Ampegs.

The price applies to one tube.

To get matched tubes you must order the number of tubes that you need and select the needed matching-option. For example: to get two quartet you must order 8 tubes and select the "quartet" matching. If you need a pair then order two tubes and choose the "pair" selection.

A powerfull bass with crystal clear highs - this is the KT88 by JJ. This tubes works perfect with any kind of KT88 / 6550 amp

The price applies to one tube.

To get matched tubes you must order the number of tubes that you need and select the needed matching-option. For example: to get two quartet you must order 8 tubes and select the "quartet" matching. If you need a pair then order two tubes and choose the "pair" selection.

Bias probe for indirect measurement of quiescent bias current of a tube. The adapter is inserted between the tube and the socket and gets connected to a standard voltmeter (not included). Pay attention to the quality of the measuring device and sufficiently charged batteries!

The quiescent current is measured indirectly via a precision resistor integrated in the adapter. The advantages of this measuring method are harmless voltages at the measuring plugs, which are in the mV range, as well as short ways for the current, since it does not need to be fed through the measuring device (common practice with many measuring adapters of Far Eastern production). As a result, there is no risk of oscillations of the amplifier which can lead to possible damage of the tubes or the amplifier itself.

Sovtek KT88, NOT MATCHED.
This KT88 is discontinued.
 

Der Austausch der Röhren in der Vorstufe kann in der Regel schnell und problemlos und ohne zusätzliche Einstellarbeiten durchgeführt werden. Bei den Röhren in der Endstufe ist dies oftmals leider nicht so einfach möglich. Eine Lösung für das Problem bietet der Tube-Town Matching Service !

Copy of the original type 3 Tung-Sol 6550 made in the 1960’s.  Triple getter, carbonized screen, and gold plated grid.  The current production benchmark of the classic 6550.

The price applies to one tube.

To get matched tubes you must order the number of tubes that you need and select the needed matching-option. For example: to get two quartet you must order 8 tubes and select the "quartet" matching. If you need a pair then order two tubes and choose the "pair" selection.

With a massive plate dissipation of 70 watts, the Tung-Sol KT150 is the most powerful octal beam tetrode ever produced. 

The price applies to one tube.

To get matched tubes you must order the number of tubes that you need and select the needed matching-option. For example: to get two quartet you must order 8 tubes and select the "quartet" matching. If you need a pair then order two tubes and choose the "pair" selection.