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Kt66

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Kt66 for sale on largest auction and classifieds sites

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Marconi kt66 vintage - marconi,

Marconi kt66 vintage - marconi,

£85.00
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Pin dual bias current probes - dual,

Pin dual bias current probes - dual,

£49.99
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Vintage gec marconi osram - /,

Vintage gec marconi osram - /,

£650.00
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4pcs el34 kt88 - 6l6, 6v6

4pcs el34 kt88 - 6l6, 6v6

£35.98
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Kt66 original marshall spares - kt66,

Kt66 original marshall spares - kt66,

£120.00
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Gec kt66 electronic tube - electronic,

Gec kt66 electronic tube - electronic,

£75.00
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Vintage gec kt66 closely - vintage, kt66's

Vintage gec kt66 closely - vintage, kt66's

£499.36
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Kt66 valve - kt66, (electronic

Kt66 valve - kt66, (electronic

£37.10
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Matched pair gec cv1075 - matched,

Matched pair gec cv1075 - matched,

£371.69
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Kt66 gold tad original - gold,

Kt66 gold tad original - gold,

£75.00
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Kt66 osram vintage grey - grey, glass

Kt66 osram vintage grey - grey, glass

£74.00
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Kt66 gec vintage grey glass - kt66,

Kt66 gec vintage grey glass - kt66,

£74.00
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Kt66 gec new and unused - new,

Kt66 gec new and unused - new,

£129.00
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Sovtek 1622 kt66 - 1622, tetrode

Sovtek 1622 kt66 - 1622, tetrode

£40.00
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Amptata tube tester - amptata, bias

Amptata tube tester - amptata, bias

£65.99
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Vintage nos gec brown - nos,

Vintage nos gec brown - nos,

£149.95
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Partridge output transformer - partridge,

Partridge output transformer - partridge,

£589.00
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Kt66 gec vintage grey - kt66,

Kt66 gec vintage grey - kt66,

£74.00
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Grampian 462 kt66 valve tube - grampian,

Grampian 462 kt66 valve tube - grampian,

£295.00
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Kt66 original marshall spares - original,

Kt66 original marshall spares - original,

£60.00
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Gec kt66 vacuum tube valve - vacuum,

Gec kt66 vacuum tube valve - vacuum,

£75.00
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Kt66 guitar tubes matched - pm,

Kt66 guitar tubes matched - pm,

£60.00
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Partridge output transformer - output,

Partridge output transformer - output,

£499.00
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Kt66 lve vintage - kt66, style

Kt66 lve vintage - kt66, style

£150.00
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Perfectly matched pair - perfectly, genalex

Perfectly matched pair - perfectly, genalex

£263.16
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Matched quad gec cv1075 - (4pcs),

Matched quad gec cv1075 - (4pcs),

£739.67
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Golden dragon kt66 super - golden,

Golden dragon kt66 super - golden,

£120.00
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Shuguang china kt66 cv1075 - china,

Shuguang china kt66 cv1075 - china,

£15.00
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Kt66 gold tad original - kt66,

Kt66 gold tad original - kt66,

£150.00
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Matched pair gec kt66 - matched, with

Matched pair gec kt66 - matched, with

£260.70
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Kt66 original marshall spares - kt66,

Kt66 original marshall spares - kt66,

£30.00
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Kt66 lve vintage retro style - retro,

Kt66 lve vintage retro style - retro,

£75.00
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Matched pair gec brown - kt-66,

Matched pair gec brown - kt-66,

£299.95
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Vintage nos osram brown - osram, kt-66

Vintage nos osram brown - osram, kt-66

£179.95
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Rare trix t621 kt66 valve - trix,

Rare trix t621 kt66 valve - trix,

£995.00
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Marconi kt66 grey - grey, black

Marconi kt66 grey - grey, black

£49.00
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Kt66 quad vintage - vintage, top

Kt66 quad vintage - vintage, top

£549.00
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Vintage nos osram brown - osram, kt-66

Vintage nos osram brown - osram, kt-66

£199.95
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807 fu7 5933 6l6 kt88 - 5933,

807 fu7 5933 6l6 kt88 - 5933,

£16.03
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Marconi kt66 cv1075 clear - cv1075,

Marconi kt66 cv1075 clear - cv1075,

£49.99
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Matched pair kt66 - matched,

Matched pair kt66 - matched,

£80.00
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Matched pair brimar - brimar, foreign

Matched pair brimar - brimar, foreign

£45.00
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Kt66 valves matched - kt66,

Kt66 valves matched - kt66,

£139.32
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Gec kt66 cv1075 - kt66,

Gec kt66 cv1075 - kt66,

£160.00
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Matched pair marconi - matched, /

Matched pair marconi - matched, /

£299.95
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Matched quad brimar foreign - matched,

Matched quad brimar foreign - matched,

£100.00
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Gec kt66 grey glass valve - gec,

Gec kt66 grey glass valve - gec,

£125.00
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Vintage 6l6 tubes valves - tubes,

Vintage 6l6 tubes valves - tubes,

£89.10
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Vintage usa made - made, 7581

Vintage usa made - made, 7581

£54.78
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New tubes gec kt66 - new,

New tubes gec kt66 - new,

£669.05
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Vintage gec brown base - vintage, kt-66

Vintage gec brown base - vintage, kt-66

£134.95
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Kt66 genalex factory - genalex,

Kt66 genalex factory - genalex,

£127.95
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Kt66 matched pair - kt66, boxed

Kt66 matched pair - kt66, boxed

£120.00
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Mullard 6l6g el35 - mullard,

Mullard 6l6g el35 - mullard,

£39.99
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Valve tube boxes size x10pcs - tube,

Valve tube boxes size x10pcs - tube,

£6.00
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Kt66 vintage valve - kt66,

Kt66 vintage valve - kt66,

£160.00
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Vintage usa valve tube pin - tube, 8

Vintage usa valve tube pin - tube, 8

£3.80
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Gec kt66 grey smoke - ,

Gec kt66 grey smoke - ,

£120.00
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Gec kt66 grey glass - kt66,

Gec kt66 grey glass - kt66,

£100.00
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Kt66 gec vintage grey glass - vintage,

Kt66 gec vintage grey glass - vintage,

£450.00
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5881 6l6 kt66 pair - 5881,

5881 6l6 kt66 pair - 5881,

£69.95
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Kt66 osram valve grey - kt66,

Kt66 osram valve grey - kt66,

£55.00
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Kt66 valves matched quad - kt66,

Kt66 valves matched quad - kt66,

£267.00
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Kt66 marconi mov twin - kt66,

Kt66 marconi mov twin - kt66,

£180.00
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6l6gb sylvania tubes - ,

6l6gb sylvania tubes - ,

£178.41
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Osram kt66 cv1075 grey - kt66,

Osram kt66 cv1075 grey - kt66,

£125.00
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Rare anos genalex - anos,

Rare anos genalex - anos,

£334.52
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Osram kt66 grey - osram, glass

Osram kt66 grey - osram, glass

£125.00
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Gec osram kt66 grey - gec,

Gec osram kt66 grey - gec,

£130.00
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Kt66 vt75 gec vintage - kt66, coke

Kt66 vt75 gec vintage - kt66, coke

£1000.00
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Mwt marconi kt66 - mwt,

Mwt marconi kt66 - mwt,

£125.00
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Osram gec kt66 - osram, grey

Osram gec kt66 - osram, grey

£120.00
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Genalex gold lion kt66 power - genalex,

Genalex gold lion kt66 power - genalex,

£31.18
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Matched pair kt66 clear - matched,

Matched pair kt66 clear - matched,

£450.00
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Kt66 vintage vlaves - g.e.c,

Kt66 vintage vlaves - g.e.c,

£160.00
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Kewtech multifunction tester - kewtech,

Kewtech multifunction tester - kewtech,

£52.00
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Valve tube boxes size - valve, x10pcs

Valve tube boxes size - valve, x10pcs

£7.50
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Kt66 gec twin halo - halo, getters

Kt66 gec twin halo - halo, getters

£180.00
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Colomor kt66 nos - valve, tube

Colomor kt66 nos - valve, tube

£30.00
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Vintage nos marconi - vintage, kt-66

Vintage nos marconi - vintage, kt-66

£174.95
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Valve tube pin octal base - pin,

Valve tube pin octal base - pin,

£4.20
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Gec kt66 grey - gec,

Gec kt66 grey - gec,

£100.00
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Osram kt66 cv1075 - cv1075, grey

Osram kt66 cv1075 - cv1075, grey

£125.00
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Factory matched pair new kt66 - matched,

Factory matched pair new kt66 - matched,

£94.30
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Reissue genalex gold - reissue,

Reissue genalex gold - reissue,

£124.60
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Amptata tube tester bias - t3,

Amptata tube tester bias - t3,

£56.63
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Kt66 gec colomor - kt66, used

Kt66 gec colomor - kt66, used

£100.00
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Nos marconi osram - osram, mwt

Nos marconi osram - osram, mwt

£215.36
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Kt66 grey glass blk base - grey, blk.

Kt66 grey glass blk base - grey, blk.

£280.00
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Vintage kt66 u52 - kt66,

Vintage kt66 u52 - kt66,

£42.30
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7851a kt66 6l6gc usa new - kt66,

7851a kt66 6l6gc usa new - kt66,

£70.00
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Kt66 vintage osram grey - kt66,

Kt66 vintage osram grey - kt66,

£250.00
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National 7581a kt66 - national, tube

National 7581a kt66 - national, tube

£65.00
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Gec kt66 grey smoke - glass, e

Gec kt66 grey smoke - glass, e

£130.00
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Genalex kt66 vacuum tube - vacuum,

Genalex kt66 vacuum tube - vacuum,

£142.73
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Williamson mono valve - williamson,

Williamson mono valve - williamson,

£2800.00
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📊96 listings · from £3.8 · avg £205.7
⚠️ These listings were last updated more than 21 days ago. Search for fresh listings

Browse 96 kt66 listings currently in our index. Prices range from £3.8 to £2800, with an average of £205.7. 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 £3.8, while premium listings can reach £2800 — giving you a wide budget spread to work with. The average price of £205.7 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