Tubes - Transmitting, Audio, Misc.
Please choose from the following TUBES Sub-Catagory choices:
572B![]() |
811A![]() |
6146![]() |
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4CX350 Series![]() |
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SOCKETS![]() |
CHIMNEYS![]() |
PLATE CAPS![]() |
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BOOKS![]() |
BASES![]() |
PARASITIC SUPPRESSOR![]() |

6550A RFP Beam Power Amplifier/Audio Tube (NOS)
In Stock
- 3.95" tall, base to top of tube
- 1.775" diameter
- 4.43", overall height
New Old Stock - No longer available for export
MFR: RF Parts Company
Made in China
SKU: 6550A-RFP

6550 Tung-Sol Beam Pentode Power Amplifier/Audio Tube (NOS)
In Stock
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-TUNG-NOS
See Data Sheet
Add to Cart

6550 Tung-Sol Beam Pentode Power Amplifier/Audio Tube USA (NOS/NIB)
In Stock
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 / New In Box * No Longer Available for Export
MFR: Tung-Sol
Made in USA
SKU: 6550-TS-NOS/NIB-USA
See Data Sheet
Add to Cart

6550 Tung-Sol Vintage Beam Power Amplifier/Audio Tube (Pull)
In Stock
These Tung_Sol tubes have 3 getters with smooth plates.
Size: 3.7" tall (base to top of tube) x 1.97" diameter, 4.24" Overall length
Clean Used * No longer available for export
MFR: Tung-Sol Made in USA
SKU: 6550-TUNG-P

6550 RCA Vintage Beam Power Amplifier/Audio Tube (NOS/NIB)
In Stock
These vintage RCA tubes have three getters and smooth plates with 3 holes.
New Old Stock / New In the Box * No longer available for export
MFR: RCA, USA
SKU: 6550-RCA

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

KT88 RF Parts Audio Tubes, Matched Pair (6550)
In Stock
KT88 RF Parts Audio Tubes,
MFR: China
SKU: KT88MP
Add to Cart