6550 Vacuum Tubes > Matched Sets, TungSol, Svetlana and more - BOIAudioWorks from BOI AudioWorks
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6550

6550 Background

6550 Vacuum Tube from BOI AudioWorks Original 6550 tube was developed by Tung-Sol back in 1955.

6550 tube was an American counterpart to european KT88 tube. As such, 6550 tube is the designer's choice in high power audio amplifiers in USA.

Notably, It was found in most powerful of the amplifiers such as Ampeg SVT and Audio Research VT200 to name just a few.

6550 in stock

We carry high quality current production 6550 tubes to replace or upgrade 6550 tubes used in many modern amplifiers.

We stock 6550 tube sets in pairs (2 tubes), quads (4 tubes) and sextets (6). Please inquire about octet (8 tubes) set. Our 6550 tube sets are burned-in for 24 hours for maxmium stability, and matched under real operation condition for no additional fee.

Questions? See our 6550 Tube Guide


Electro-Harmonix

6550C-EH Matched Pair

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.

In stock
6550C-EH Matched Pair Buy Now $58.00

Electro-Harmonix

6550C-EH Matched Quad

Price is for a matched quad of Electro-Harmonix 6550EH.

In stock
6550C-EH Matched Quad Buy Now $116.00

Electro-Harmonix

6550C-EH Matched Sextet

Price is for a matched sextet (6 tubes) of Electro-Harmonix 6550EH.

In stock
6550C-EH Matched Sextet Buy Now $174.00

JJ/Tesla

6550-JJ Matched Pair

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.

In stock
6550-JJ Matched Pair Buy Now $78.00

JJ/Tesla

6550-JJ Matched Quad

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 quad.

In stock
6550-JJ Matched Quad Buy Now $156.00

JJ/Tesla

6550-JJ Matched Sextet

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 sextet.

Available to order
6550-JJ Matched Sextet Buy Now $234.00

TungSol

6550 Tung-Sol RI Matched Pair

Tung-Sol 6550 with retro-classic looks has good dynamics in in HiFi amps, agressive and full tone in Marshalls. Also great in Ampeg bass amps.

In stock
6550 Tung-Sol RI Matched Pair Buy Now $64.00

TungSol

6550 Tung-Sol RI Matched Quad

Price is for a matching quad.

In stock
6550 Tung-Sol RI Matched Quad Buy Now $128.00

TungSol

6550 Tung-Sol RI Matched Sextet

Price is for a matching sextet (6 tubes).

In stock
6550 Tung-Sol RI Matched Sextet Buy Now $192.00

Sovtek

6550WE-SOV Matched Pair

Sovtek 6550WE is a great value guitar and bass amps. When pushed, it gives you that raw crunch. Also ideal for HiFi amplifier tube replacement.

In stock
6550WE-SOV Matched Pair Buy Now $54.00

Sovtek

6550WE-SOV Matched Quad

Price is for a matching quad (set of 4 tubes) of Sovtek 6550WE

In stock
6550WE-SOV Matched Quad Buy Now $108.00

Sovtek

6550WE-SOV Matched Sextet

Price is for a matching sextet (set of 6 tubes) of Sovtek 6550WE.

In stock
6550WE-SOV Matched Sextet Buy Now $162.00

Svetlana

6550C-SV Matched Pair

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.

In stock
6550C-SV Matched Pair Buy Now $57.00

Svetlana

6550C-SV Matched Quad

Price is for a matched quad of Svetlana 6550C. Super well made, heavy duty and excellent balanced sonics.

In stock
6550C-SV Matched Quad Buy Now $114.00

Svetlana

6550C-SV Matched Sextet

Price is for a matched sextet (6 tubes) of Svetlana 6550C.

In stock
6550C-SV Matched Sextet Buy Now $171.00

SED/Winged-C

6550C-WC Matched Pair

Shipped as OEM original output tubes on many high-end amplifiers, SED6550C is the top choice for audiophile application with crisp top end and deep full bottom end response. On guitar and bass amps, SED6550C provides rich, clean, rull power with plenty of headroom. Price is for a matched pair.

Sold out - Please inquire
6550C-WC Matched Pair

SED/Winged-C

6550C-WC Matched Quad

Price is for a matched quad.

Sold out - Please inquire
6550C-WC Matched Quad
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