6550 from BOI AudioWorks
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6550

6550WE Tube from BOI AudioWorks

6550 Guide

Questions? See our 6550 Tube Guide

The 6550 tubes we carry are burned-in for 24 hours and matched under real operation condition.

We offer 6550 tubes in pair (2 tubes), quad (4 tubes) and sextet. Octet (set of 8) is also avilable for extra matching fee.


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6550C-EH Matched Pair

Electro-Harmonix $55.00
Excellent linearity, power and dissipation. Rugged with four pillar construction for mica supports. Excellent for guitar amps. Formed glass shape. Price is for a matched pair. 6550C-EH Matched Pair
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6550C-EH Matched Quad

Electro-Harmonix $110.00
Price is for a matched quad of Electro-Harmonix 6550EH. 6550C-EH Matched Quad
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6550C-EH Matched Sextet

Electro-Harmonix
Price is for a matched sextet (6 tubes) of Electro-Harmonix 6550EH. 6550C-EH Matched Sextet
Out of stock
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6550-JJ Matched Pair

JJ/Tesla $78.00
JJ 6550 is a replacement for any 6550. In our Marshall JMP, it had good amount of body to the sound, and stacked up quite well to NOS GE6550 tubes. Price is for a matched pair. 6550-JJ  Matched Pair
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6550 Tung-Sol RI Matched Pair

TungSol $68.00
Brand new release of the "Russian Issue" Tung-Sol 6550. Nice controlled punchy bass in HiFi amps, agressive and full tone in Marshalls. Has the retro-classic Tung-Sol shape. 6550 Tung-Sol RI Matched Pair
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6550 Tung-Sol RI Matched Quad

TungSol $136.00
Price is for a matching quad of newly issued Tung-Sol 6550. 6550 Tung-Sol RI Matched Quad
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6550 Tung-Sol RI Matched Sextet

TungSol $204.00
Price is for a matching sextet (6 tubes) new issued Tung-Sol 6550. 6550 Tung-Sol RI Matched Sextet
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6550WE-SOV Matched Pair

Sovtek $51.00
Back in stock by popular demand, and at a lower price!
Sovtek 6550WE is an excellent choice for guitar and bass amps. When pushed, it gives you that raw crunch. Also ideal for HiFi amplifier replacement purposes.
6550WE-SOV Matched Pair
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6550WE-SOV Matched Quad

Sovtek $102.00
Price is for a matching quad (set of 4 tubes) of Sovtek 6550WE 6550WE-SOV Matched Quad
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6550WE-SOV Matched Sextet

Sovtek $153.00
Price is for a matching sextet (set of 6 tubes) of Sovtek 6550WE. 6550WE-SOV Matched Sextet
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6550C-SV Matched Pair

Svetlana $57.00
Excellent sounding 6550C, quoted as best sounding by Ken Stevens of Convergent Audio Technology. Excellent reliability, great tonality. It's a great step up from Sovtek 6550WE. Price is for a matched pair. 6550C-SV Matched Pair
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6550C-SV Matched Quad

Svetlana $114.00
Price is for a matched quad of Svetlana 6550C. Super well made, heavy duty and excellent balanced sonics. 6550C-SV Matched Quad
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6550C-SV Matched Sextet

Svetlana $171.00
Price is for a matched sextet (6 tubes) of Svetlana 6550C. 6550C-SV Matched Sextet
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