For Sale USA

Kt66

4

Kt66 for sale on largest auction and classifieds sites

Home / / Kt66 refurbished & used for sale | For Sale USA
Matched pair groove tubes - matched,

Matched pair groove tubes - matched,

$50.00
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Genalex gold lion kt66 power - genalex,

Genalex gold lion kt66 power - genalex,

$99.99
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Tad kt66 premium matched - premium,

Tad kt66 premium matched - premium,

$93.95
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Vacuum tubes valves kt66 - vacuum, ef86

Vacuum tubes valves kt66 - vacuum, ef86

$500.00
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Rare nos mullard el37 tube - nos,

Rare nos mullard el37 tube - nos,

$150.00
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Matched pair gec cv1075 - gec,

Matched pair gec cv1075 - gec,

$650.00
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Pair mullard kt66 vacuum tubes - kt66,

Pair mullard kt66 vacuum tubes - kt66,

$399.00
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Sunvalley mono blocks tubes - sunvalley,

Sunvalley mono blocks tubes - sunvalley,

$1795.00
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Lot kt66 tubes - of,

Lot kt66 tubes - of,

$3750.00
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Electronic kt66 beam power - kt66,

Electronic kt66 beam power - kt66,

$99.99
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Factory matched tung sol - factory,

Factory matched tung sol - factory,

$69.99
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Matched pair tube - matched,

Matched pair tube - matched,

$128.00
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Kt66 cv1075 gec matched - kt66,

Kt66 cv1075 gec matched - kt66,

$663.75
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2pcs lot new kt66 - 2pcs/lot,

2pcs lot new kt66 - 2pcs/lot,

$213.38
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Matched quad tube - tube, amp

Matched quad tube - tube, amp

$256.00
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Rare nos 6l6 - nos, 6l6g

Rare nos 6l6 - nos, 6l6g

$332.85
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Pair tad rt824 kt66 - rt824, vacuum

Pair tad rt824 kt66 - rt824, vacuum

$85.00
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Gec kt66 matched pair - gec,

Gec kt66 matched pair - gec,

$338.98
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Genalex gold lion kt66 - genalex,

Genalex gold lion kt66 - genalex,

$325.00
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Nos platinum match - pair, kt66

Nos platinum match - pair, kt66

$400.00
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Sovtek tubes 4 pack - kt-66, gt

Sovtek tubes 4 pack - kt-66, gt

$144.00
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Rare nos 6l6gc tube grey - nos, ge

Rare nos 6l6gc tube grey - nos, ge

$60.00
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Platinum factory match quad - platinum,

Platinum factory match quad - platinum,

$219.30
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Kt66 lve vintage retro style - lve,

Kt66 lve vintage retro style - lve,

$198.83
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Nos matched pair - of, kt66

Nos matched pair - of, kt66

$99.00
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Genalex gold lion kt66 - kt66, power

Genalex gold lion kt66 - kt66, power

$29.71
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Genalex gold lion kt66 - genalex, power

Genalex gold lion kt66 - genalex, power

$129.99
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Gec kt66 british old stock - kt66,

Gec kt66 british old stock - kt66,

$250.75
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Kt88c vacuum tube valve - vacuum, 4pcs

Kt88c vacuum tube valve - vacuum, 4pcs

$335.00
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Vintage crosley kt66 push pull - kt66,

Vintage crosley kt66 push pull - kt66,

$499.99
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Kt66 grey glass matched quad - glass,

Kt66 grey glass matched quad - glass,

$1100.00
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Gec kt66 pair vacuum - kt66,

Gec kt66 pair vacuum - kt66,

$398.00
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Electron tube tubes - tubes,, new

Electron tube tubes - tubes,, new

$400.00
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Brand new tung sol - tung-sol, reissue

Brand new tung sol - tung-sol, reissue

$160.00
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Marconi kt66 tubes - tubes, quad

Marconi kt66 tubes - tubes, quad

$2799.00
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Nos 1959 pair - pair, matching

Nos 1959 pair - pair, matching

$179.99
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Genalex gold lion - genalex, new

Genalex gold lion - genalex, new

$132.50
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Kt66 6l6 sovtek tube gray - 6l6,

Kt66 6l6 sovtek tube gray - 6l6,

$36.00
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Matched pair vacuum tube - 1,

Matched pair vacuum tube - 1,

$119.61
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Ruby kt66c kt66 - ruby,

Ruby kt66c kt66 - ruby,

$250.00
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Kewtech kt66dl 1 - kt66dl, 12-in-1

Kewtech kt66dl 1 - kt66dl, 12-in-1

$799.99
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New reissue genalex gold - new,

New reissue genalex gold - new,

$71.97
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6p3s tubes matched - tubes, quad

6p3s tubes matched - tubes, quad

$69.00
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Matched pair shuguang - pair,

Matched pair shuguang - pair,

$89.99
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6l6gc kt66 general electric - 6l6gc/kt66,

6l6gc kt66 general electric - 6l6gc/kt66,

$299.99
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Matched pair vacuum tube - pair,

Matched pair vacuum tube - pair,

$131.51
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New current matched pair - matched, (2)

New current matched pair - matched, (2)

$153.35
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Tube amp higher temp - temp, dampers

Tube amp higher temp - temp, dampers

$22.99
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Kt66 electronic matched - jj,

Kt66 electronic matched - jj,

$114.58
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Matched pair shuguang kt66 - pair,

Matched pair shuguang kt66 - pair,

$88.74
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Kt66 genalex gold - kt66,,

Kt66 genalex gold - kt66,,

$259.00
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Shuguang kt66 z - x, kt66-z

Shuguang kt66 z - x, kt66-z

$107.80
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7581a kt66 6l6gc power tube - 7581a,

7581a kt66 6l6gc power tube - 7581a,

$75.00
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Genalex gold lion kt66 new - genalex,

Genalex gold lion kt66 new - genalex,

$285.00
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Heathkit peerless - w‑5m, —

Heathkit peerless - w‑5m, —

$1295.00
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Kt66 ars replaces - 1,

Kt66 ars replaces - 1,

$40.95
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Tube amplifier display stand - display,

Tube amplifier display stand - display,

$19.99
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New tung sol 7581a kt66 - tung-sol,

New tung sol 7581a kt66 - tung-sol,

$178.00
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Tad kt66 premium - tad,

Tad kt66 premium - tad,

$49.95
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Pair kt66 power vacuum - pair, jj

Pair kt66 power vacuum - pair, jj

$111.90
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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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Kt66 guitar tubes matched - pm,

Kt66 guitar tubes matched - pm,

$79.25
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Genalex gold lion kt66 power - -,

Genalex gold lion kt66 power - -,

$67.95
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Brand new tung sol reissue - brand,

Brand new tung sol reissue - brand,

$51.32
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Kt66 lve vintage retro - kt66, style

Kt66 lve vintage retro - kt66, style

$99.95
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Strong genelex gold lion - strong,

Strong genelex gold lion - strong,

$149.99
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Tube amp dampers for - tube,

Tube amp dampers for - tube,

$12.99
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Kt66 cv1075 gec - kt66, cup

Kt66 cv1075 gec - kt66, cup

$297.56
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Kt66 6l6 sovtek tube - kt66, gray

Kt66 6l6 sovtek tube - kt66, gray

$40.50
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Brand new tung sol - brand, reissue

Brand new tung sol - brand, reissue

$105.73
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6l6gc kt66 general - 6l6gc/kt66, electric

6l6gc kt66 general - 6l6gc/kt66, electric

$219.99
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Vintage genalex gec kt66 - vintage, /

Vintage genalex gec kt66 - vintage, /

$269.00
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Kt66 tube amp doctor premium - kt66,,

Kt66 tube amp doctor premium - kt66,,

$50.95
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Vintage genalex gec - 1,

Vintage genalex gec - 1,

$249.00
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2pcs matched audio - matched,

2pcs matched audio - matched,

$248.99
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Genalex gold lion kt66 - lion, power

Genalex gold lion kt66 - lion, power

$246.98
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6l6gc kt66 general electric - 6l6gc/kt66,

6l6gc kt66 general electric - 6l6gc/kt66,

$349.99
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Nos marconi osram - nos, kt66

Nos marconi osram - nos, kt66

$277.97
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Vintagenos 6l6g - 1x,

Vintagenos 6l6g - 1x,

$949.00
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Genalex gold lion kt66 - gold,

Genalex gold lion kt66 - gold,

$54.00
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Gec kt66 nos - gec, pair

Gec kt66 nos - gec, pair

$475.00
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Vintagenos sylvania 6l6g - sylvania,

Vintagenos sylvania 6l6g - sylvania,

$949.00
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Kt66 marconi 1969 - nos, boxed

Kt66 marconi 1969 - nos, boxed

$299.36
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Clean super matched pair - matched,

Clean super matched pair - matched,

$179.00
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Rft 6l6 6l6gc 6l6g - rft,

Rft 6l6 6l6gc 6l6g - rft,

$279.00
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Kt66 electronic matched - jj,

Kt66 electronic matched - jj,

$57.79
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Kt66 genalex gold lion - genalex,

Kt66 genalex gold lion - genalex,

$129.50
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For el34 6v6 6l6 - for,

For el34 6v6 6l6 - for,

$19.82
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Kt66 cv1075 gec nos - cv1075,

Kt66 cv1075 gec nos - cv1075,

$665.25
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New current matched pair - current,

New current matched pair - current,

$150.77
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Sextet genalex gold lion - genalex,

Sextet genalex gold lion - genalex,

$407.70
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Tomiko audio output - 5k,

Tomiko audio output - 5k,

$205.00
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New reissue genalex - new,

New reissue genalex - new,

$75.42
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Relco mullard genalex - mullard, kt66

Relco mullard genalex - mullard, kt66

$1495.00
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Tad premium selected factory - premium,

Tad premium selected factory - premium,

$399.00
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📊96 listings · from $12.99 · avg $334.32

Browse 96 kt66 listings currently in our index. Prices range from $12.99 to $3750, with an average of $334.32. 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 $12.99, while premium listings can reach $3750 — giving you a wide budget spread to work with. The average price of $334.32 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