6550 / KT88

Designed for Audio service. This tube carries a 42 watt plate dissipation rating which provides for push/pull amplifier designs up to 100 watts output.
Size: 3.7" tall (base to top of tube) x 1.97" diameter, 4.24" Overall length

New Old Stock * No Longer Available for Export
MFR: Tung-Sol
Made in USA
SKU: 6550-TS-NOS-USA

See Data Sheet

• Low Hour Pull from Working Equipment
• Second Generation
• Three getters: 2 Side and 1 Top
• Solid Black Pates

Clean Used  * No Longer Available for Export
MFR: Tung-Sol
SKU: 6550-TUNG-BP-P

• Date code: 63-30
• Smooth Grey plates

New Old Stock * No longer available for export
MFR: General Electric Company
SKU: 6550-GE-63-NOS

• Date code: 63-30
• Smooth Grey plates

New Old Stock * No longer available for export
MFR: General Electric Company
SKU: 6550-GE-63-NOS

• Low hour pull
• 2 Top Getters
• 1 Side Getter

Used * No longer available for export
MFR: Grove Tubes
SKU: 6550-GT-P

• Low Hour Pull
• Tested on a Hockok 539C 
• Gm range 11250 -11500

Used * No longer available for export
MFR: Genalex
Made in Great Britain
SKU: SC1000-KT88-P

Size: 3.7" tall (base to top of tube) x 1.97" diameter, 4.24" Overall length.

New Production * No longer available for export
MFR: Tung-Sol
Made in Russia
SKU: 6550-TUNG-NOS-RUS

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

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