Kt66
Kt66 for sale on Ireland's largest auction and classifieds sites
Kt66 original marshall matched - original, - €42.30
- Free postage - New and Used
- Free postage - New and Used
Boxed gec kt66 valve - gec, gray - €90.00
Boxed gec kt66 • Valve gray glass • Round brown base - Free postage - New and Used
Boxed gec kt66 • Valve gray glass • Round brown base - Free postage - New and Used
Vintage gec kt66 brown - kt66, base - €134.21
Vintage gec kt66 • Brown base gray • Bottom made england - Free postage - New and Used
Vintage gec kt66 • Brown base gray • Bottom made england - Free postage - New and Used
Boxed osram kt66 - boxed, gray - €90.00
Boxed osram kt66 • Label date code • November 1955 gray - Free postage - New and Used
Boxed osram kt66 • Label date code • November 1955 gray - Free postage - New and Used
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Kt66 national electronic - kt66, - €50.62
Left photos have • Twin halo getters • Right are single - Free postage - New and Used
Left photos have • Twin halo getters • Right are single - Free postage - New and Used
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48 listings · from €6 · avg €207.99
Browse 48 kt66 listings currently in our index. Prices range from €6 to €2086.12, with an average of €207.99. 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 →
Kt66 original marshall spares - kt66, - €120.00
Kt66 original marshall • Spares these are • Best value quality - Free postage - New and Used
Kt66 original marshall • Spares these are • Best value quality - Free postage - New and Used
Gec kt66 valve - gec, gray - €90.00
Gec kt66 valve • Date code august • 1952 pan getter - Free postage - New and Used
Gec kt66 valve • Date code august • 1952 pan getter - Free postage - New and Used
Kt66 original marshall - marshall, spares - €60.00
Kt66 original marshall • Spares these are • Best value quality - Free postage - New and Used
Kt66 original marshall • Spares these are • Best value quality - Free postage - New and Used
Kt66 gold tad original - kt66, - €150.00
Kt66 marshall gold • Tad matched selected • Spares new unused - Free postage - New and Used
Kt66 marshall gold • Tad matched selected • Spares new unused - Free postage - New and Used
Golden dragon kt66 super - kt66, - €120.00
Golden dragon kt66 • Super matched pairs • Valves valve tube - Free postage - New and Used
Golden dragon kt66 • Super matched pairs • Valves valve tube - Free postage - New and Used
Matched pair gec kt66 - matched, - €180.00
Closely matched pair • Marconi kt66 valves • Date code april - Free postage - New and Used
Closely matched pair • Marconi kt66 valves • Date code april - Free postage - New and Used
Matched pair brimar foreign - matched, - €50.00
Matched pair 6l6gt • Kt66 7581 valves • Tubes brimar foreign - Free postage - New and Used
Matched pair 6l6gt • Kt66 7581 valves • Tubes brimar foreign - Free postage - New and Used
Kt66 genalex factory matched - , - €127.95
Genalex kt66 factory • Matched pair new • Vacuum tube valve - Free postage - New and Used
Genalex kt66 factory • Matched pair new • Vacuum tube valve - Free postage - New and Used
Pin dual bias current - 8-pin, - €49.99
Ct1 box douk • Audio order measure • Cathode current power - Free postage - New and Used
Ct1 box douk • Audio order measure • Cathode current power - Free postage - New and Used
Gec kt66 tube quad - gec, - €2086.12
More black around • Used valve • Wires - Free postage - New and Used
More black around • Used valve • Wires - Free postage - New and Used
Boxed matched pair gec kt66 - pair, - €380.00
Boxed matched pair • Gec kt66 valves • Which appear hardly - Free postage - New and Used
Boxed matched pair • Gec kt66 valves • Which appear hardly - Free postage - New and Used
Boxed nos gec kt66 valve - nos, - €120.00
Boxed nos gec • Kt66 valve date • Code 7816 week - Free postage - New and Used
Boxed nos gec • Kt66 valve date • Code 7816 week - Free postage - New and Used
Gec kt66 valve clear glass - gec, - €100.00
Gec kt66 valve • Rubbed print date • Spot welded gray - Free postage - New and Used
Gec kt66 valve • Rubbed print date • Spot welded gray - Free postage - New and Used
Osram marconi kt66 gec - osram/marconi, grey - €151.50
Bought this new • Old stock many • Years ago never - Free postage - New and Used
Bought this new • Old stock many • Years ago never - Free postage - New and Used
Kt66 original marshall - kt66, - €30.00
Kt66 original marshall • Spares these are • Best value quality - Free postage - New and Used
Kt66 original marshall • Spares these are • Best value quality - Free postage - New and Used
Kt66 lve vintage retro - retro, style - €150.00
Computer matched quad • Selected gold tested • Tubes made china - Free postage - New and Used
Computer matched quad • Selected gold tested • Tubes made china - Free postage - New and Used
Boxed nos gec kt66 - boxed, - €150.00
Boxed nos gec • Kt66 valve date • Code may 1962 - Free postage - New and Used
Boxed nos gec • Kt66 valve date • Code may 1962 - Free postage - New and Used
Tad kt66 amplifier - amplifier, valve - €18.00
Tube amp doctor • Kt66 bought this • New about years - Free postage - New and Used
Tube amp doctor • Kt66 bought this • New about years - Free postage - New and Used
Boxed nos gec - kt66, valve - €180.00
Boxed nos gec • Kt66 valve date • Code 7319 week - Free postage - New and Used
Boxed nos gec • Kt66 valve date • Code 7319 week - Free postage - New and Used
Kt66 matched pair new boxed - jj, - €120.00
Matched pair tubes • New unused boxed - Free postage - New and Used
Matched pair tubes • New unused boxed - Free postage - New and Used
Valve tube boxes size - tube, x10pcs - €6.00
Valve tube boxes • Have divider keep • Secure suit 6l6g - Free postage - New and Used
Valve tube boxes • Have divider keep • Secure suit 6l6g - Free postage - New and Used
Partridge williamson kt66 - williamson, - €365.00
Item sold spare • Parts repair very • Large heavy 22kgs - Free postage - New and Used
Item sold spare • Parts repair very • Large heavy 22kgs - Free postage - New and Used
Kt66 gec new - gec, from - €189.00
Avo tested current • Shorts leaks etc • Believed new based - Free postage - New and Used
Avo tested current • Shorts leaks etc • Believed new based - Free postage - New and Used
Boxed nos 6l6gc - nos, kt66 - €100.00
Boxed nos ge6l6gc • Kt66 valve white • Print glass etched - Free postage - New and Used
Boxed nos ge6l6gc • Kt66 valve white • Print glass etched - Free postage - New and Used
Matched quad gec - gec, kt66 - €675.00
Closely matched quad • Marconi kt66 valves • Twin ring getters - Free postage - New and Used
Closely matched quad • Marconi kt66 valves • Twin ring getters - Free postage - New and Used
Matched pair gec - pair, - €275.00
Matched pair gec • Kt66 tubes valves • Clear glass brown - Free postage - New and Used
Matched pair gec • Kt66 tubes valves • Clear glass brown - Free postage - New and Used
Gec cv1075 kt66 valve - gec, - €100.00
Tested 4900 mhos - Free postage - New and Used
Tested 4900 mhos - Free postage - New and Used
Kt66 gold tad original - gold, - €75.00
Kt66 marshall gold • Tad matched selected • Spares new unused - Free postage - New and Used
Kt66 marshall gold • Tad matched selected • Spares new unused - Free postage - New and Used
Boxed nos gec - nos, marconi - €180.00
Date code april • 1965 spot welded • Gray plates clear - Free postage - New and Used
Date code april • 1965 spot welded • Gray plates clear - Free postage - New and Used
Boxed marconi osram cv1075 - boxed, - €80.00
Date codes january • 1963 pan getter • Spot welded gray - Free postage - New and Used
Date codes january • 1963 pan getter • Spot welded gray - Free postage - New and Used
Boxed nos gec - boxed, valve - €170.00
Boxed nos gec • Kt66 valve date • Code 7220 week - Free postage - New and Used
Boxed nos gec • Kt66 valve date • Code 7220 week - Free postage - New and Used
Nos gec kt66 valve - gec, - €150.00
Nos gec kt66 • Valve date code • 7152 week 1971 - Free postage - New and Used
Nos gec kt66 • Valve date code • 7152 week 1971 - Free postage - New and Used
National 7581a kt66 - national, - €65.00
National 7581a kt66 • Tube valve new • Vintage part that - Free postage - New and Used
National 7581a kt66 • Tube valve new • Vintage part that - Free postage - New and Used
Gec kt66 tube - gec, batch - €1043.32
More black around • Used valve • Wires - Free postage - New and Used
More black around • Used valve • Wires - Free postage - New and Used
2pcs lot new kt66 - 2pcs/lot, kt66-z - €194.80
Hello dear friend - Free postage - New and Used
Hello dear friend - Free postage - New and Used
Kt66 lve vintage retro - retro, style - €75.00
Computer matched pair • Selected gold tested • Tubes made china - Free postage - New and Used
Computer matched pair • Selected gold tested • Tubes made china - Free postage - New and Used
Vintage marconi gec 66 - vintage, - €84.95
Good strong used • Valve avo nos • Specs 65.0 6.3 - Free postage - New and Used
Good strong used • Valve avo nos • Specs 65.0 6.3 - Free postage - New and Used
National electronics kt66 - national, - €19.95
- Free postage - New and Used
- Free postage - New and Used
Matched pair kt66 new - matched, - €80.00
Valves these are • Specially selected valve • Tubes gold class - Free postage - New and Used
Valves these are • Specially selected valve • Tubes gold class - Free postage - New and Used
Colomor kt66 nos valve - kt66, tube - €30.00
Colomor kt66 test • Results this valve - Free postage - New and Used
Colomor kt66 test • Results this valve - Free postage - New and Used
Vintage gec clear glass - gec, - €650.14
- Free postage - New and Used
- Free postage - New and Used
2pcs el34 kt88 6l6 6v6 - 2pcs, - €17.99
This 8pin probes • Just can working • Amptata tester tool - Free postage - New and Used
This 8pin probes • Just can working • Amptata tester tool - Free postage - New and Used
Gec kt66 tube - gec, - €516.44
This valve was • Obviously tested you • Can see one - Free postage - New and Used
This valve was • Obviously tested you • Can see one - Free postage - New and Used
Try this: pioneer speakers | ecc82 brimar | tascam reel reel | panasonic rf | sony tc | grundig melody boy | kenwood receiver | philips record player | radiograms | ferrograph logic 7
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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 48 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 €6, while premium listings can reach €2086.12 — giving you a wide budget spread to work with. The average price of €207.99 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.