For Sale

Kt66

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Kt66 for sale on largest auction and classifieds sites

Home / Specialized Computing / Kt66 for sale – 96 used, around €150 | For Sale
Marconi kt66 pair tested - -,

Marconi kt66 pair tested - -,

€175.00
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Gec kt88 pentode - gec, tube

Gec kt88 pentode - gec, tube

€250.00
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Pin dual bias current - 8-pin,

Pin dual bias current - 8-pin,

€49.99
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Cherished number kt66hum kt66 - number,

Cherished number kt66hum kt66 - number,

€567.70
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Gec kt66 tinted glass - gec, fully

Gec kt66 tinted glass - gec, fully

€70.00
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Mullard ecl82 tube tannoy - mullard,

Mullard ecl82 tube tannoy - mullard,

€65.00
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Osram kt66 valve - tube., looks

Osram kt66 valve - tube., looks

€172.30
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Kt66 lve vintage - lve,

Kt66 lve vintage - lve,

€150.00
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Kt66 original marshall spares - kt66,

Kt66 original marshall spares - kt66,

€120.00
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Kt66 original marshall spares - marshall,

Kt66 original marshall spares - marshall,

€60.00
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Marconi kt66 pair tested - pair,

Marconi kt66 pair tested - pair,

€150.00
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Shuguang black treasure - shuguang, kt66-z

Shuguang black treasure - shuguang, kt66-z

€249.26
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Kt66 gold tad original - kt66,

Kt66 gold tad original - kt66,

€75.00
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Osram kt66 beam tetrode - osram, power

Osram kt66 beam tetrode - osram, power

€200.00
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Marconi kt66 grey glass - kt66, glass,

Marconi kt66 grey glass - kt66, glass,

€44.00
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Gec kt88 pentode - gec,

Gec kt88 pentode - gec,

€250.00
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Kt66 lve vintage retro - kt66,

Kt66 lve vintage retro - kt66,

€75.00
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Matched pair gec cv1075 - (2pcs),

Matched pair gec cv1075 - (2pcs),

€485.80
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Kt66 genalex factory matched - kt66,

Kt66 genalex factory matched - kt66,

€127.95
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Matched pair marconi gec - matched,

Matched pair marconi gec - matched,

€299.95
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Gec kt66 electronic tube - gec,

Gec kt66 electronic tube - gec,

€50.00
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Matched pair gec kt66 with - matched,

Matched pair gec kt66 with - matched,

€260.70
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Pcs gec valve - pcs,

Pcs gec valve - pcs,

€25.00
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Kt66 gec new - kt66, from

Kt66 gec new - kt66, from

€129.00
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Gec kt66 grey - grey, tube

Gec kt66 grey - grey, tube

€125.00
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Kt66 cv1075 gec - nos, boxed

Kt66 cv1075 gec - nos, boxed

€500.00
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Kt66 vt75 gec vintage - gec, coke

Kt66 vt75 gec vintage - gec, coke

€1000.00
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Osram kt66 grey glass valve - osram,

Osram kt66 grey glass valve - osram,

€125.00
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Matched pair shuguang - pair, 6550a

Matched pair shuguang - pair, 6550a

€156.69
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Marconi kt66 cv1075 clear - marconi,

Marconi kt66 cv1075 clear - marconi,

€49.99
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Valve tube boxes size - tube, 4

Valve tube boxes size - tube, 4

€7.50
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Gec cv1075 kt66 - gec, kb/z

Gec cv1075 kt66 - gec, kb/z

€200.00
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Marconi osram gec - , fat

Marconi osram gec - , fat

€30.00
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Kt66 gec valve tube grey - tube,

Kt66 gec valve tube grey - tube,

€160.00
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Gec kt66 grey glass valve - glass,

Gec kt66 grey glass valve - glass,

€125.00
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Gec kt66 grey glass valve - valve, tube

Gec kt66 grey glass valve - valve, tube

€125.00
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Kt66 marconi 1969 nos - kt66,

Kt66 marconi 1969 nos - kt66,

€225.00
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Vintage nos gec brown - nos,

Vintage nos gec brown - nos,

€149.95
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Kt41 osram england - kt41,

Kt41 osram england - kt41,

€40.00
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Matched pair kt66 new valve - ,

Matched pair kt66 new valve - ,

€80.00
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Valve tube boxes size x10pcs - boxes, 3

Valve tube boxes size x10pcs - boxes, 3

€6.00
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Kt66 gec twin halo getter - twin,

Kt66 gec twin halo getter - twin,

€225.00
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Vintage usa valve tube pin - usa,

Vintage usa valve tube pin - usa,

€3.80
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Kt66 clear glass - glass, base

Kt66 clear glass - glass, base

€400.00
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Golden dragon kt66 super - golden,

Golden dragon kt66 super - golden,

€120.00
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Gec kt66 clear glass valve - clear,

Gec kt66 clear glass valve - clear,

€125.00
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Matched quad brimar foreign - matched,

Matched quad brimar foreign - matched,

€100.00
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Kt66 gold tad original - kt66,

Kt66 gold tad original - kt66,

€150.00
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Gec kt66 clear - clear, valve

Gec kt66 clear - clear, valve

€125.00
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Vintage nos osram - vintage, /gec

Vintage nos osram - vintage, /gec

€174.95
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Kt66 cv1075 gec - kt66, smoked

Kt66 cv1075 gec - kt66, smoked

€250.00
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Matched pair brimar - pair,

Matched pair brimar - pair,

€40.00
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Kt66 cv1075 gec nos - gec,

Kt66 cv1075 gec nos - gec,

€1000.00
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Kt66 valves matched - -, pair

Kt66 valves matched - -, pair

€139.32
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Kt66 professional vacuum - 2,

Kt66 professional vacuum - 2,

€59.80
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Grampian 462 kt66 valve - 462,

Grampian 462 kt66 valve - 462,

€295.00
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Gec kt66 grey - gec, valve

Gec kt66 grey - gec, valve

€125.00
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Matched pair kt66 clear - pair,

Matched pair kt66 clear - pair,

€450.00
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Gec kt66 cv1075 2xo - gec,

Gec kt66 cv1075 2xo - gec,

€160.00
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Valve tube pin octal base - pin,

Valve tube pin octal base - pin,

€4.20
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Rare vintage osram - vintage, osram/gec

Rare vintage osram - vintage, osram/gec

€199.95
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Rare marconi kt66 vt75 fat - kt66,

Rare marconi kt66 vt75 fat - kt66,

€300.00
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Rare gec osram - gec, vt75

Rare gec osram - gec, vt75

€300.00
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Vintage gec osram - gec, kt66

Vintage gec osram - gec, kt66

€73.50
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Matched pair gec brown - pair,

Matched pair gec brown - pair,

€299.95
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Kt66 clear glass - clear,

Kt66 clear glass - clear,

€325.00
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Kt66 valves matched quad - valves,

Kt66 valves matched quad - valves,

€267.00
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Brimar foreign 6l6gt kt66 - brimar,

Brimar foreign 6l6gt kt66 - brimar,

€18.00
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5881 6l6 kt66 pair - kt66, tested

5881 6l6 kt66 pair - kt66, tested

€69.95
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Kewtech kt66dl 1 - kt66dl, 12-in-1

Kewtech kt66dl 1 - kt66dl, 12-in-1

€1195.00
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Mullard original tube valve - tube,

Mullard original tube valve - tube,

€15.00
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Kt66 grey glass blk base - grey,

Kt66 grey glass blk base - grey,

€400.00
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Kt66 clear glass - clear, base

Kt66 clear glass - clear, base

€280.00
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Vintage gec kt66 cv1075 - cv1075, grey

Vintage gec kt66 cv1075 - cv1075, grey

€125.00
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Kt66 gec colomor valve used - kt66,

Kt66 gec colomor valve used - kt66,

€100.00
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Marconi osram vt75 kt66 fat - marconi/osram,

Marconi osram vt75 kt66 fat - marconi/osram,

€300.00
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Kt66 grey glass blk base - blk.,

Kt66 grey glass blk base - blk.,

€280.00
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807 fu7 5933 - fu7, to

807 fu7 5933 - fu7, to

€16.03
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Pair kt66 grey glass - m.pair,

Pair kt66 grey glass - m.pair,

€700.00
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Kt66 marconi mov twin - marconi,

Kt66 marconi mov twin - marconi,

€180.00
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7581a kt66 nos valve - 7581a,

7581a kt66 nos valve - 7581a,

€120.00
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Gec cv1075 kt66 twin halo - kt66,

Gec cv1075 kt66 twin halo - kt66,

€160.00
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Kt66 guitar tubes - pm, matched

Kt66 guitar tubes - pm, matched

€60.00
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Gec kt66 cv1075 pan - gec, getter

Gec kt66 cv1075 pan - gec, getter

€130.00
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Kewtech multifunction tester - kewtech,

Kewtech multifunction tester - kewtech,

€52.00
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Rare gec osram - gec, fat

Rare gec osram - gec, fat

€300.00
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Kt66 cv1075 gec clear glass - kt66,

Kt66 cv1075 gec clear glass - kt66,

€130.00
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Gec cv1075 kt66 - , halo

Gec cv1075 kt66 - , halo

€160.00
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Kt66 osram valve grey glass - kt66,

Kt66 osram valve grey glass - kt66,

€55.00
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Gec kt66 twin halo - kt66,

Gec kt66 twin halo - kt66,

€340.00
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Shuguang china kt66 - shuguang, cv1075

Shuguang china kt66 - shuguang, cv1075

€15.00
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Osram kt66 grey glass - osram,

Osram kt66 grey glass - osram,

€125.00
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Gec cv1075 kt66 grey glass - gec,

Gec cv1075 kt66 grey glass - gec,

€200.00
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Colomor kt66 nos valve - e,

Colomor kt66 nos valve - e,

€30.00
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Gec kt66 tube quad same - gec,

Gec kt66 tube quad same - gec,

€2093.05
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Kewtech 1 multifunction - kewtech,

Kewtech 1 multifunction - kewtech,

€1434.70
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📊96 listings · from €3.8 · avg €229.2
⚠️ These listings were last updated more than 19 days ago. Search for fresh listings

Browse 96 kt66 listings currently in our index. Prices range from €3.8 to €2093.05, with an average of €229.2. 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: tube tester | ecc82 brimar | renault megane ii | kt88 | el84 tubes | honda crx del sol | valve tester | cathode ray tube | voltage selector | 572b

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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 €2093.05 — giving you a wide budget spread to work with. The average price of €229.2 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