For Sale UK

Kt66 tubes

4

Kt66 tubes for sale on largest auction and classifieds sites

Home / Specialized Computing / Kt66 tubes refurbished & used for sale | For Sale UK
Marconic kt66 valves tubes - valves,

Marconic kt66 valves tubes - valves,

£618.70
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Sovtek 1622 kt66 - 1622, beam

Sovtek 1622 kt66 - 1622, beam

£40.00
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Relco mullard genalex kt66 - relco,

Relco mullard genalex kt66 - relco,

£1325.16
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Pin dual bias current probes - bias,

Pin dual bias current probes - bias,

£49.99
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Gec kt66 electronic tube - kt66,

Gec kt66 electronic tube - kt66,

£75.00
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Matched pair marconi gec - pair,

Matched pair marconi gec - pair,

£299.95
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Matched pair gec brown - pair,

Matched pair gec brown - pair,

£299.95
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Factory matched pair - factory, kt66

Factory matched pair - factory, kt66

£94.30
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Vintage gec kt66 closely - vintage, kt66's

Vintage gec kt66 closely - vintage, kt66's

£499.36
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Marconi kt66 vintage audio - kt66,

Marconi kt66 vintage audio - kt66,

£85.00
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Kt66 valve - kt66, tube)

Kt66 valve - kt66, tube)

£37.10
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Kt66 original marshall spares - kt66,

Kt66 original marshall spares - kt66,

£120.00
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Kt66 lve vintage - vintage, style

Kt66 lve vintage - vintage, style

£150.00
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Marconi kt66 grey - glass,, black

Marconi kt66 grey - glass,, black

£49.00
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Gec kt66 vacuum tube - vacuum,

Gec kt66 vacuum tube - vacuum,

£75.00
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Kt66 quad vintage - quad,

Kt66 quad vintage - quad,

£549.00
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Kt66 gold tad - kt66,

Kt66 gold tad - kt66,

£75.00
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Matched pair gec cv1075 - matched, (2pcs)

Matched pair gec cv1075 - matched, (2pcs)

£406.26
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Kt66 guitar tubes matched - pm,

Kt66 guitar tubes matched - pm,

£60.00
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New tubes gec kt66 cv1075 - new,

New tubes gec kt66 cv1075 - new,

£664.80
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Matched pair brimar foreign - pair,

Matched pair brimar foreign - pair,

£40.00
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Kt66 original marshall spares - kt66,

Kt66 original marshall spares - kt66,

£60.00
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Pcs gec valve tube boxes - 10,

Pcs gec valve tube boxes - 10,

£25.00
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Kt66 gold tad original - kt66,

Kt66 gold tad original - kt66,

£150.00
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6l6gt kt66 7581 - kt66,

6l6gt kt66 7581 - kt66,

£45.00
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Grampian 462 kt66 - 462,

Grampian 462 kt66 - 462,

£295.00
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Kt66 lve vintage retro - lve, style

Kt66 lve vintage retro - lve, style

£75.00
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Matched quad brimar foreign - matched,

Matched quad brimar foreign - matched,

£100.00
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Vintage usa valve tube pin - vintage,

Vintage usa valve tube pin - vintage,

£3.80
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Gold lion kt66 vacuum tubes - gold,

Gold lion kt66 vacuum tubes - gold,

£143.60
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Matched pair kt66 - kt66,

Matched pair kt66 - kt66,

£450.00
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Kt66 original marshall spares - kt66,

Kt66 original marshall spares - kt66,

£30.00
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Matched pair kt66 new - pair,

Matched pair kt66 new - pair,

£80.00
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Vintage nos marconi - vintage, /gec

Vintage nos marconi - vintage, /gec

£174.95
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Vintage gec kt66 cv1075 - kt66,

Vintage gec kt66 cv1075 - kt66,

£125.00
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Gec kt66 valve - valve, double

Gec kt66 valve - valve, double

£120.00
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Golden dragon kt66 - dragon, super

Golden dragon kt66 - dragon, super

£120.00
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Kt66 gec new and - gec,

Kt66 gec new and - gec,

£129.00
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807 fu7 5933 - fu7,

807 fu7 5933 - fu7,

£16.03
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Gec kt66 matched pair vacuum - gec,

Gec kt66 matched pair vacuum - gec,

£267.38
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Kt66 genalex factory matched - ,

Kt66 genalex factory matched - ,

£127.95
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Rare trix t621 - rare,

Rare trix t621 - rare,

£850.00
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Vintage nos osram brown - osram,

Vintage nos osram brown - osram,

£199.95
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Reissue genalex gold lion kt66 - genalex,

Reissue genalex gold lion kt66 - genalex,

£100.47
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Marconi kt66 cv1075 - marconi, clear

Marconi kt66 cv1075 - marconi, clear

£49.99
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Mullard ecc82 ecc81 ez80 x25 - ecc82,

Mullard ecc82 ecc81 ez80 x25 - ecc82,

£219.00
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Colomor kt66 nos - valve, tube

Colomor kt66 nos - valve, tube

£30.00
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Vintage nos osram brown - nos, kt-66

Vintage nos osram brown - nos, kt-66

£179.95
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Gec kt66 twin halo - twin, at

Gec kt66 twin halo - twin, at

£340.00
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Gec cv1075 kt66 twin - , halo

Gec cv1075 kt66 twin - , halo

£160.00
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Valve tube boxes size - valve,

Valve tube boxes size - valve,

£6.00
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Kt66 clear glass - glass, blk.

Kt66 clear glass - glass, blk.

£280.00
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Gec kt66 grey - smoke, glass

Gec kt66 grey - smoke, glass

£100.00
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Vintage gec brown base - kt-66,

Vintage gec brown base - kt-66,

£134.95
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Vintage nos gec - nos,

Vintage nos gec - nos,

£149.95
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Osram gec kt66 grey - osram,

Osram gec kt66 grey - osram,

£120.00
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Valve tube boxes - 4, x10pcs

Valve tube boxes - 4, x10pcs

£7.50
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Rare marconi kt66 vt75 fat - marconi,

Rare marconi kt66 vt75 fat - marconi,

£300.00
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Kt66 matched pair new boxed - new,

Kt66 matched pair new boxed - new,

£120.00
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Kt66 clear glass blk - kt66,

Kt66 clear glass blk - kt66,

£325.00
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Vintage 6l6 tubes valves - vintage, /

Vintage 6l6 tubes valves - vintage, /

£89.10
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Kt66 professional vacuum - kt66,

Kt66 professional vacuum - kt66,

£65.00
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5881 6l6 kt66 pair - 6l6, (x2)

5881 6l6 kt66 pair - 6l6, (x2)

£69.95
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Gec kt66 grey smoke - grey, j

Gec kt66 grey smoke - grey, j

£100.00
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Kt66 marconi mov - twin, getters

Kt66 marconi mov - twin, getters

£180.00
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Gec kt66 cv1075 2xo getters - cv1075,

Gec kt66 cv1075 2xo getters - cv1075,

£160.00
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Kt66 grey glass - grey,

Kt66 grey glass - grey,

£400.00
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Marconi gec kt66 - gec,

Marconi gec kt66 - gec,

£120.00
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Mwt marconi kt66 grey glass - marconi,

Mwt marconi kt66 grey glass - marconi,

£125.00
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Osram kt66 grey glass - glass, valve

Osram kt66 grey glass - glass, valve

£125.00
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Gec kt66 grey glass - kt66, valve

Gec kt66 grey glass - kt66, valve

£125.00
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Kt66 valves matched pair - kt66,

Kt66 valves matched pair - kt66,

£139.32
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Gec kt66 grey smoke - gec,

Gec kt66 grey smoke - gec,

£120.00
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Gec kt66 grey glass - glass, black

Gec kt66 grey glass - glass, black

£100.00
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Mullard 6l6g el35 kt66 cv1286 - 6l6g,

Mullard 6l6g el35 kt66 cv1286 - 6l6g,

£39.99
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Mullard original tube valve - mullard,

Mullard original tube valve - mullard,

£15.00
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Kt66 clear glass blk base - glass, blk.

Kt66 clear glass blk base - glass, blk.

£400.00
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Near mint 7581a kt66 - (2),

Near mint 7581a kt66 - (2),

£132.95
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Kt66 gec twin halo getters - kt66,

Kt66 gec twin halo getters - kt66,

£180.00
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Valve tube pin octal base - octal,

Valve tube pin octal base - octal,

£4.20
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Pair kt66 grey glass - m.pair,

Pair kt66 grey glass - m.pair,

£700.00
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Kt66 gec nos boxed - kt66,

Kt66 gec nos boxed - kt66,

£225.00
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Kt66 clear glass blk - clear, base

Kt66 clear glass blk - clear, base

£400.00
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Golden dragon kt66 - golden,

Golden dragon kt66 - golden,

£60.00
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Marconi kt66 amplifier - marconi,

Marconi kt66 amplifier - marconi,

£82.86
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Kt66 valve jj - (tube),

Kt66 valve jj - (tube),

£75.48
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Gec cv1075 kt66 - , twin

Gec cv1075 kt66 - , twin

£160.00
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Osram kt66 cv1075 - osram,

Osram kt66 cv1075 - osram,

£125.00
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Kt66 used tubes one - one, matching

Kt66 used tubes one - one, matching

£214.54
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Matched quad kt77 power - quad,

Matched quad kt77 power - quad,

£97.50
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Valve tube pin gold - valve, 8

Valve tube pin gold - valve, 8

£2.24
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Pair kt66 grey glass black - ,

Pair kt66 grey glass black - ,

£875.00
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Osram kt66 cv1075 - kt66,

Osram kt66 cv1075 - kt66,

£125.00
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Osram kt66 cv1075 - cv1075, grey

Osram kt66 cv1075 - cv1075, grey

£125.00
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Tube adapter 6p41s 7868 - tube, to

Tube adapter 6p41s 7868 - tube, to

£70.90
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Gec kt66 tube - gec, pair

Gec kt66 tube - gec, pair

£1046.54
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📊96 listings · from £2.24 · avg £196.87

Browse 96 kt66 tubes listings currently in our index. Prices range from £2.24 to £1325.16, with an average of £196.87. 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 tubes →

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Everything you need to know about kt66 tubes

Whether you are looking for a brand-new or second-hand kt66 tubes, 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 £2.24, while premium listings can reach £1325.16 — giving you a wide budget spread to work with. The average price of £196.87 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.

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