6550 / KT88
6550 / KT88 TUBES
The 6550 and KT88 tubes are renowned for their exceptional quality and durability. They are widely used in high-fidelity amplifiers, offering rich sound reproduction and impressive power handling. Explore our selection to find the perfect match for your audio needs.

KT88 Svetlana Audio Tubes (NIB)
In Stock
The Svetlana™ KT88 is a glass envelope beam power tetrode. It is intended for audio frequency power amplification service.
New In the Box * No longer available for export
MFR: Svetlana, Russia
SKU: KT88-SVET
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KT88 Svetlana Audio Tubes Matched Pair (2) (6550) (NIB)
In Stock
The Svetlana™ KT88 is a glass envelope beam power tetrode. It is intended for audio frequency power amplification service.
New In the Box * No longer available for export
MFR: Svetlana, Russia
SKU: KT88-SVET-MP
Add to Cart

KT88 Svetlana Audio Tubes Matched Quad (4) (NIB)
In Stock
The Svetlana™ KT88 is a glass envelope beam power tetrode. It is intended for audio frequency power amplification service.
New In the Box * No longer available for export
MFR: Svetlana, Russia
SKU: KT88-SVET-MQ
Add to Cart

6550C Svetlana High Performance Audio Beam Power Pentode (NIB)
In Stock
The Svetlana™ 6550C is a glass envelope beam power pentode. It is intended for ultra linear audio frequency power amplification service. Close manufacturing specification tolerances and improved processing provide improved reliability and superior sonic performance.
New In Box * No longer available for export
MFR: Svetlana Electron Devices, Inc.
Made in Russia
SKU: SV6550C

6550C Svetlana High Performance Audio Beam Power Pentode Matched Pair (2) (NIB)
In Stock
The Svetlana™ 6550C is a glass envelope beam power pentode. It is intended for ultra linear audio frequency power amplification service. Close manufacturing specification tolerances and improved processing provide improved reliability and superior sonic performance.
New In Box * No longer available for export
MFR: Svetlana Electron Devices, Inc.
Made in Russia
SKU: SV6550C-MP

6550C Svetlana High Performance Audio Beam Power Pentode Matched Quad (4) (NIB)
In Stock
The Svetlana™ 6550C is a glass envelope beam power pentode. It is intended for ultra linear audio frequency power amplification service. Close manufacturing specification tolerances and improved processing provide improved reliability and superior sonic performance.
New In Box * No longer available for export
MFR: Svetlana Electron Devices, Inc.
Made in Russia
SKU: SV6550C-MQ

6550B-3 Svetlana High Performance Audio Beam Power Pentode (NIB)
In Stock
The 6550B is an early Svetlana variant of the 6550 made in the 80's.
New In Box * No longer available for export
MFR: Svetlana Electron Devices, Inc.
Made in Russia
SKU: SV6550B-3

6550B-3 Audio Classic High Performance Audio Beam Power Pentode (NIB)
In Stock
The 6550B is an early Svetlana variant of the 6550 made in the 80's.
New In Box * No longer available for export
MFR: Audio Classic
Made in Russia
SKU: 6550B-3