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Kt66

4

Kt66 for sale on Ireland's largest auction and classifieds sites

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Marconi kt66 grey glass - , brown

Marconi kt66 grey glass - , brown

€120.00 · Buy It Now

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Gec kt66 tube quad same - quad,

Gec kt66 tube quad same - quad,

€2095.77 · Buy It Now

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Kt66 matched pair vacuum - pair,

Kt66 matched pair vacuum - pair,

€113.91 · Buy It Now

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Amptata tube tester - tester, bias

Amptata tube tester - tester, bias

€65.99 · Buy It Now

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Matched pair marconi gec - marconi,

Matched pair marconi gec - marconi,

€299.95 · Buy It Now

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Vintage osram kt66 valve - osram,

Vintage osram kt66 valve - osram,

€120.00 · Buy It Now

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Gec kt66 vacuum tube valve - vacuum,

Gec kt66 vacuum tube valve - vacuum,

€75.00 · Buy It Now

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Gec kt66 electronic tube - gec,

Gec kt66 electronic tube - gec,

€75.00 · Buy It Now

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Matched pair gec brown - matched,

Matched pair gec brown - matched,

€299.95 · Buy It Now

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Marconi kt66 vintage audio - kt66,

Marconi kt66 vintage audio - kt66,

€85.00 · Buy It Now

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Kt66 original marshall spares - original,

Kt66 original marshall spares - original,

€120.00 · Buy It Now

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Kt66 gold tad original - kt66,

Kt66 gold tad original - kt66,

€75.00 · Buy It Now

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Kt66 original marshall - kt66, spares

Kt66 original marshall - kt66, spares

€60.00 · Buy It Now

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Pin dual bias current - bias, probes

Pin dual bias current - bias, probes

€49.99 · Buy It Now

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Gec kt66 tube pair same - tube,

Gec kt66 tube pair same - tube,

€1048.15 · Buy It Now

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Kt66 gec new and - new, unused

Kt66 gec new and - new, unused

€129.00 · Buy It Now

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Marconi kt66 cv1075 clear - cv1075,

Marconi kt66 cv1075 clear - cv1075,

€49.99 · Buy It Now

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Kt66 gold tad original - kt66,

Kt66 gold tad original - kt66,

€150.00 · Buy It Now

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Kt66 gec vintage grey - vintage, glass

Kt66 gec vintage grey - vintage, glass

€150.00 · Buy It Now

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Matched pair gec - matched, kt66

Matched pair gec - matched, kt66

€260.70 · Buy It Now

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Kt66 osram vintage - grey, glass

Kt66 osram vintage - grey, glass

€150.00 · Buy It Now

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Kt66 gec vintage - vintage, grey

Kt66 gec vintage - vintage, grey

€150.00 · Buy It Now

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Kt66 original marshall spares - kt66,

Kt66 original marshall spares - kt66,

€30.00 · Buy It Now

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Kt66 lve vintage - lve,

Kt66 lve vintage - lve,

€75.00 · Buy It Now

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Kt66 valve - tube),

Kt66 valve - tube),

€45.42 · Buy It Now

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Golden dragon kt66 super - dragon,

Golden dragon kt66 super - dragon,

€120.00 · Buy It Now

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Rare trix t621 - kt66, valve

Rare trix t621 - kt66, valve

€995.00 · Buy It Now

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Matched pair brimar - brimar, foreign

Matched pair brimar - brimar, foreign

€45.00 · Buy It Now

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Genalex kt66 vacuum tube - kt66, made

Genalex kt66 vacuum tube - kt66, made

€145.81 · Buy It Now

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Matched quad brimar foreign - quad,

Matched quad brimar foreign - quad,

€100.00 · Buy It Now

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Grampian 462 kt66 valve - grampian,

Grampian 462 kt66 valve - grampian,

€295.00 · Buy It Now

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Kt66 lve vintage - kt66, retro

Kt66 lve vintage - kt66, retro

€150.00 · Buy It Now

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Marconi kt66 grey - marconi,

Marconi kt66 grey - marconi,

€49.00 · Buy It Now

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Gec kt66 grey - kt66, tube

Gec kt66 grey - kt66, tube

€125.00 · Buy It Now

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Gec kt66 cv1075 - cv1075,

Gec kt66 cv1075 - cv1075,

€160.00 · Buy It Now

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Kt66 gec twin halo - kt66,

Kt66 gec twin halo - kt66,

€180.00 · Buy It Now

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Kt66 genalex factory - kt66,

Kt66 genalex factory - kt66,

€127.95 · Buy It Now

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Gec kt66 clear - clear, valve

Gec kt66 clear - clear, valve

€150.00 · Buy It Now

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Psvane el34ph electron tube - el34ph,

Psvane el34ph electron tube - el34ph,

€104.17 · Buy It Now

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4pcs el34 kt88 6l6 - el34, 5881

4pcs el34 kt88 6l6 - el34, 5881

€35.98 · Buy It Now

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Valve tube boxes size - size, x10pcs

Valve tube boxes size - size, x10pcs

€6.00 · Buy It Now

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Shuguang china kt66 - shuguang, cv1075

Shuguang china kt66 - shuguang, cv1075

€15.00 · Buy It Now

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Vintage gec kt66 - gec, kt66's

Vintage gec kt66 - gec, kt66's

€516.70 · Buy It Now

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Matched quad kt77 - matched,

Matched quad kt77 - matched,

€100.24 · Buy It Now

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Kt66 valves matched pair - jj,

Kt66 valves matched pair - jj,

€139.32 · Buy It Now

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Kt66 matched pair - jj,

Kt66 matched pair - jj,

€120.00 · Buy It Now

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Rare marconi kt66 vt75 fat - marconi,

Rare marconi kt66 vt75 fat - marconi,

€300.00 · Buy It Now

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National 7581a kt66 tube - national,

National 7581a kt66 tube - national,

€65.00 · Buy It Now

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Vintage usa valve tube - vintage,

Vintage usa valve tube - vintage,

€3.80 · Buy It Now

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5881 6l6 kt66 pair tested - (x2),

5881 6l6 kt66 pair tested - (x2),

€69.95 · Buy It Now

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Marconi kt66 valves - marconi, )

Marconi kt66 valves - marconi, )

€281.50 · Buy It Now

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Vintage nos marconi - vintage, /gec

Vintage nos marconi - vintage, /gec

€174.95 · Buy It Now

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Brimar foreign 6l6gt kt66 7581 - foreign,

Brimar foreign 6l6gt kt66 7581 - foreign,

€20.00 · Buy It Now

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Gec cv1075 kt66 twin - , halo

Gec cv1075 kt66 twin - , halo

€160.00 · Buy It Now

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Kt66 gec vintage grey glass - vintage,

Kt66 gec vintage grey glass - vintage,

€450.00 · Buy It Now

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Sovtek vintage vacuum - kt-66,

Sovtek vintage vacuum - kt-66,

€27.33 · Buy It Now

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Mullard 6l6g el35 kt66 - mullard,

Mullard 6l6g el35 kt66 - mullard,

€39.99 · Buy It Now

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Sovtek 1622 kt66 beam tetrode - 1622,

Sovtek 1622 kt66 beam tetrode - 1622,

€40.00 · Buy It Now

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Factory matched pair - factory,

Factory matched pair - factory,

€94.30 · Buy It Now

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Osram kt66 grey glass valve - grey,

Osram kt66 grey glass valve - grey,

€125.00 · Buy It Now

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Kt66 marconi mov - kt66,

Kt66 marconi mov - kt66,

€180.00 · Buy It Now

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Gec kt66 valve - valve, for

Gec kt66 valve - valve, for

€100.00 · Buy It Now

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Strong genelex gold lion kt66 - gold,

Strong genelex gold lion kt66 - gold,

€136.69 · Buy It Now

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Vintage genalex kt66 - vintage,

Vintage genalex kt66 - vintage,

€359.96 · Buy It Now

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Gec kt66 twin - gec, at

Gec kt66 twin - gec, at

€160.00 · Buy It Now

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Osram kt66 cv1075 grey - kt66,

Osram kt66 cv1075 grey - kt66,

€125.00 · Buy It Now

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Gec cv1075 kt66 - gec,

Gec cv1075 kt66 - gec,

€125.00 · Buy It Now

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Matched pair kt66 new valve - matched,

Matched pair kt66 new valve - matched,

€80.00 · Buy It Now

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Matched pair kt66 clear - pair,

Matched pair kt66 clear - pair,

€450.00 · Buy It Now

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Kt66 7581a valve vacuum - ge, /

Kt66 7581a valve vacuum - ge, /

€79.95 · Buy It Now

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Pair mullard kt66 - pair,

Pair mullard kt66 - pair,

€500.30 · Buy It Now

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Marconi kt66 amplifier - kt66,

Marconi kt66 amplifier - kt66,

€82.86 · Buy It Now

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Mwt marconi kt66 - marconi, grey

Mwt marconi kt66 - marconi, grey

€125.00 · Buy It Now

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Sovtek tubes quad set - kt-66,

Sovtek tubes quad set - kt-66,

€182.25 · Buy It Now

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Valve tube boxes size - valve, 4

Valve tube boxes size - valve, 4

€7.50 · Buy It Now

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Osram kt66 grey glass valve - grey,

Osram kt66 grey glass valve - grey,

€125.00 · Buy It Now

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Vintage genalex kt66 matched - vintage,

Vintage genalex kt66 matched - vintage,

€400.06 · Buy It Now

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Gec kt66 twin - halo, at

Gec kt66 twin - halo, at

€160.00 · Buy It Now

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Vintage gec kt66 - gec, cv1075

Vintage gec kt66 - gec, cv1075

€125.00 · Buy It Now

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Gec kt66 grey - grey, smoke

Gec kt66 grey - grey, smoke

€100.00 · Buy It Now

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Kt66 valves matched quad - kt66, jj

Kt66 valves matched quad - kt66, jj

€267.00 · Buy It Now

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New tubes gec kt66 - 2,

New tubes gec kt66 - 2,

€683.48 · Buy It Now

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Kt66 clear glass - kt66,

Kt66 clear glass - kt66,

€280.00 · Buy It Now

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Icon audio stereo - stereo, 40/6l6

Icon audio stereo - stereo, 40/6l6

€1099.50 · Buy It Now

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7851a kt66 6l6gc usa new - 7851a,

7851a kt66 6l6gc usa new - 7851a,

€70.00 · Buy It Now

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Rare gec osram kt66 vt75 - rare,

Rare gec osram kt66 vt75 - rare,

€400.00 · Buy It Now

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Gec kt66 valve - gec,

Gec kt66 valve - gec,

€7.59 · Buy It Now

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Genalex gold lion kt66 new - genalex,

Genalex gold lion kt66 new - genalex,

€117.55 · Buy It Now

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Marconi gec kt66 grey smoke - gec,

Marconi gec kt66 grey smoke - gec,

€120.00 · Buy It Now

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Osram kt66 cv1075 grey - osram,

Osram kt66 cv1075 grey - osram,

€125.00 · Buy It Now

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Gec cv1075 kt66 twin - twin, halo

Gec cv1075 kt66 twin - twin, halo

€160.00 · Buy It Now

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Gec kt66 grey smoke - kt66, glass

Gec kt66 grey smoke - kt66, glass

€100.00 · Buy It Now

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Colomor kt66 nos valve tube - colomor,

Colomor kt66 nos valve tube - colomor,

€30.00 · Buy It Now

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Valve tube pin octal base - pin,

Valve tube pin octal base - pin,

€4.20 · Buy It Now

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Rare nos 7581a - ge,

Rare nos 7581a - ge,

€168.59 · Buy It Now

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Gec kt66 tube - gec, nib

Gec kt66 tube - gec, nib

€518.83 · Buy It Now

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📊96 listings · from €3.8 · avg €199.81

Browse 96 kt66 listings currently in our index. Prices range from €3.8 to €2095.77, with an average of €199.81. 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 →

Try this: nathe bit | sonos play 5 | mgb wire wheel hubs | vauxhall vivaro rear view mirror | servants bell box | garrard silver | white metal truck kits | peugeot 306 spoiler | asz engine | corner bench

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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 €2095.77 — giving you a wide budget spread to work with. The average price of €199.81 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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