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Kt66

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Marconi kt66 tubes quad - tubes, nos

Marconi kt66 tubes quad - tubes, nos

$2799.00
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Genalex gold lion kt66 - genalex,

Genalex gold lion kt66 - genalex,

$99.99
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Genalex kt66 emitron vacuum - emitron,

Genalex kt66 emitron vacuum - emitron,

$150.00
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Lot kt66 tubes - lot, of

Lot kt66 tubes - lot, of

$4000.00
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Platinum factory match quad - factory,

Platinum factory match quad - factory,

$219.30
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Factory matched tung - factory, 7581a

Factory matched tung - factory, 7581a

$69.99
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Gec kt66 matched pair - matched, vacuum

Gec kt66 matched pair - matched, vacuum

$337.98
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Genalex gold lion kt66 vacuum - lion,

Genalex gold lion kt66 vacuum - lion,

$325.00
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Pair mullard kt66 vacuum - kt66,

Pair mullard kt66 vacuum - kt66,

$449.00
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Kt66 marconi 1969 nos - kt66, boxed

Kt66 marconi 1969 nos - kt66, boxed

$297.68
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Ruby kt66c kt66 audio power - ruby,

Ruby kt66c kt66 audio power - ruby,

$250.00
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Tad kt66 premium matched - kt66,

Tad kt66 premium matched - kt66,

$93.95
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Genalex gold lion - genalex,

Genalex gold lion - genalex,

$129.99
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Nos platinum match pair - match, kt66

Nos platinum match pair - match, kt66

$400.00
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Kt88c vacuum tube valve - vacuum,

Kt88c vacuum tube valve - vacuum,

$335.00
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Sovtek tubes 4 pack - kt-66, gt

Sovtek tubes 4 pack - kt-66, gt

$144.00
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Kt66 lve vintage retro - kt66,

Kt66 lve vintage retro - kt66,

$198.83
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Electronic kt66 beam power - jj,

Electronic kt66 beam power - jj,

$99.99
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Kt66 6l6 sovtek tube - kt66,

Kt66 6l6 sovtek tube - kt66,

$40.50
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Vintage crosley kt66 push pull - vintage,

Vintage crosley kt66 push pull - vintage,

$499.99
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Nos matched pair kt66 - nos,

Nos matched pair kt66 - nos,

$99.00
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Rare nos 6l6gc tube - tube, grey

Rare nos 6l6gc tube - tube, grey

$60.00
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Genalex gold lion - lion, new

Genalex gold lion - lion, new

$132.50
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Pair tad rt824 kt66 - pair,

Pair tad rt824 kt66 - pair,

$85.00
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Gec kt66 british - stock, in

Gec kt66 british - stock, in

$250.75
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Nos 1959 pair close - pair, matching

Nos 1959 pair close - pair, matching

$179.99
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Kt66 6l6 sovtek - 6l6, tube

Kt66 6l6 sovtek - 6l6, tube

$36.00
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Genalex gold lion kt66 power - kt66,

Genalex gold lion kt66 power - kt66,

$29.71
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Matched quad tube amp - matched,

Matched quad tube amp - matched,

$256.00
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2pcs matched audio tube - matched, vacuum

2pcs matched audio tube - matched, vacuum

$245.67
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Genalex gold lion custom - gold, tube

Genalex gold lion custom - gold, tube

$234.45
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Mullard kt88 power vacuum - kt88,

Mullard kt88 power vacuum - kt88,

$300.00
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Kt66 marshall premium matched - marshall,

Kt66 marshall premium matched - marshall,

$210.15
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New reissue genalex gold - new,

New reissue genalex gold - new,

$71.97
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Brand new tung sol - new, reissue

Brand new tung sol - new, reissue

$160.00
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Gec kt66 pair vacuum - kt66,

Gec kt66 pair vacuum - kt66,

$398.00
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Sunvalley mono blocks tubes - mono,

Sunvalley mono blocks tubes - mono,

$1795.00
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Kt66 power vacuum tube - jj,

Kt66 power vacuum tube - jj,

$55.95
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Quad kt66 power vacuum - jj,

Quad kt66 power vacuum - jj,

$223.80
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Shuguang kt66 z - 2,

Shuguang kt66 z - 2,

$107.80
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Matched pair shuguang kt66 - pair,

Matched pair shuguang kt66 - pair,

$89.99
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Strong genelex gold - strong, kt66

Strong genelex gold - strong, kt66

$149.99
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Kt66 genalex - genalex,

Kt66 genalex - genalex,

$500.00
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6l6gc kt66 general electric - 6l6gc/kt66,

6l6gc kt66 general electric - 6l6gc/kt66,

$299.99
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Kt66 genalex gold - kt66,,

Kt66 genalex gold - kt66,,

$259.00
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6l6gc kt66 general electric - electric, ge

6l6gc kt66 general electric - electric, ge

$349.99
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Kt66 ars replaces - ,

Kt66 ars replaces - ,

$40.95
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Kt66 genalex pair - genalex,

Kt66 genalex pair - genalex,

$550.00
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Genalex gold lion kt66 new - genalex,

Genalex gold lion kt66 new - genalex,

$69.50
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Kt66 guitar tubes matched - pm,

Kt66 guitar tubes matched - pm,

$79.25
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New current matched pair - current,

New current matched pair - current,

$153.35
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Clean super matched - 2,

Clean super matched - 2,

$179.00
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Kt66 tube - kt66,

Kt66 tube - kt66,

$600.00
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2pcs matched audio tube - audio,

2pcs matched audio tube - audio,

$248.99
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Vintagenos sylvania 6l6g - 1x,

Vintagenos sylvania 6l6g - 1x,

$949.00
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Electron tube tubes new - electron,

Electron tube tubes new - electron,

$400.00
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Matched quad kt77 power - jj,

Matched quad kt77 power - jj,

$95.00
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Tube amplifier display stand - amplifier,

Tube amplifier display stand - amplifier,

$19.99
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New matched pair psvane - 1,

New matched pair psvane - 1,

$281.06
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Kt66 lve vintage - retro, style

Kt66 lve vintage - retro, style

$101.68
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Genalex gold lion kt66 - lion, power

Genalex gold lion kt66 - lion, power

$67.95
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7581a kt66 6l6gc power - 6l6gc,

7581a kt66 6l6gc power - 6l6gc,

$75.00
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Tube amp higher temp dampers - temp,

Tube amp higher temp dampers - temp,

$22.99
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Matched pair tube amp - pair, doctor

Matched pair tube amp - pair, doctor

$128.00
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New tung sol - tung-sol, kt66

New tung sol - tung-sol, kt66

$178.00
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Genalex gold lion kt66 - genalex,

Genalex gold lion kt66 - genalex,

$246.98
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Genalex gold lion kt66 power - genalex,

Genalex gold lion kt66 power - genalex,

$274.99
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New reissue genalex - new, lion

New reissue genalex - new, lion

$75.42
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Genalex gold lion kt66 - genalex, 6l6

Genalex gold lion kt66 - genalex, 6l6

$55.00
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Kt66 electronic matched - kt66,, jj

Kt66 electronic matched - kt66,, jj

$57.79
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Kt66 electronic matched - jj, electronic,

Kt66 electronic matched - jj, electronic,

$114.58
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Pair kt66 power - power, vacuum

Pair kt66 power - power, vacuum

$111.90
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Gec kt66 nos - kt66, pair

Gec kt66 nos - kt66, pair

$475.00
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Kt66 marconi pair - marconi, used

Kt66 marconi pair - marconi, used

$368.18
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Brand new tung sol - new, tung-sol

Brand new tung sol - new, tung-sol

$105.73
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Jtm tube guitar - jtm,

Jtm tube guitar - jtm,

$1649.00
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6l6g 5881 6p3p - us,

6l6g 5881 6p3p - us,

$288.00
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Genalex gold lion - genalex, kt66

Genalex gold lion - genalex, kt66

$285.00
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6p3s tubes matched - tubes, nos

6p3s tubes matched - tubes, nos

$69.00
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Newest sophia electric kt66 - sophia,

Newest sophia electric kt66 - sophia,

$199.99
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Kt66 genalex gold - kt66,,

Kt66 genalex gold - kt66,,

$129.50
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New current matched pair - pair, (2)

New current matched pair - pair, (2)

$150.77
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Kt66 tube amp - amp, premium

Kt66 tube amp - amp, premium

$50.95
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Sextet genalex gold - sextet, of

Sextet genalex gold - sextet, of

$407.70
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Vintage genalex gec kt66 - genalex,

Vintage genalex gec kt66 - genalex,

$269.00
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New current matched quad - matched, (4)

New current matched quad - matched, (4)

$305.12
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Brand new tung sol reissue - brand,

Brand new tung sol reissue - brand,

$107.54
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Vintage genalex gec - ,

Vintage genalex gec - ,

$249.00
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Kt66 electronic matched - kt66,,

Kt66 electronic matched - kt66,,

$229.16
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Nos matched pair - matched, rca

Nos matched pair - matched, rca

$199.95
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Quad genalex gold lion - of,

Quad genalex gold lion - of,

$271.80
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Rft 6l6 6l6gc - rft, 6l6g

Rft 6l6 6l6gc - rft, 6l6g

$279.00
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For el34 6v6 - 6l6, chassis

For el34 6v6 - 6l6, chassis

$19.82
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Nos marconi osram mwt kt66 - osram,

Nos marconi osram mwt kt66 - osram,

$277.97
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4pcs matched quad - 4pcs,

4pcs matched quad - 4pcs,

$169.99
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Relco mullard genalex kt66 - relco,

Relco mullard genalex kt66 - relco,

$1495.00
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Looking for more kt66?

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📊96 listings · from $19.82 · avg $320.31

Browse 96 kt66 listings currently in our index. Prices range from $19.82 to $4000, with an average of $320.31. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about kt66 →

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Everything you need to know about kt66

Whether you are looking for a brand-new or second-hand kt66, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at $19.82, while premium listings can reach $4000 — giving you a wide budget spread to work with. The average price of $320.31 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

🔍 kt66 Search live on eBay