300b tube
300b tube for sale on Ireland's largest auction and classifieds sites
Browse 48 300b tube listings currently in our index. Prices range from £3.89 to £975.06, with an average of £250.68. 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 300b tube →
Budget picks — under £143
- Free postage - New and Used
Silicone damper ring • 18mm 6a2 6k4 • 6z4 39mm 2a3 - Free postage - New and Used
Silicone damper ring • 18mm 6a2 6k4 • 6z4 39mm 2a3 - Free postage - New and Used
2mm thick double • Sided gold plated • Pcb board fit - Free postage - New and Used
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Ux4 valve plug • Base not socket • 300b 2a3 572b - Free postage - New and Used
- Free postage - New and Used
Very high quality • Pin black plastic • Nos usa made - Free postage - New and Used
300b chinese these • Look new but • Test used tube - Free postage - New and Used
Looks new but • Tests used emission • Our usual tube - Free postage - New and Used
Audio amplifier suitable • Occasion where output • Power required 10w - Free postage - New and Used
Mint 100 testing • Sovtek 300b triode • Audio tube tested - Free postage - New and Used
Amplifier 2pcs 300b • 5687 hifi resistors • Pcb 178mm 193mm - Free postage - New and Used
300b cossor logo • Made lin lai • China nos will - Free postage - New and Used
300b directly heated • Type cathode triode • Used class audio - Free postage - New and Used
Hello everyone are • Experienced company that • Specializes selling various - Free postage - New and Used
- Free postage - New and Used
Mid-range — £152 to £286
Keeping tradition genalex • Provide highest quality • Tubes new sensor - Free postage - New and Used
Reasonable layout circuit • Reproduce classic style • 300b tube amplifier - Free postage - New and Used
2pcs 300b hifi • Factory matched tested • 100 bra new - Free postage - New and Used
300b cossor matched • Pair tubes gold • Pin ceramic base - Free postage - New and Used
Rate item arrived • Factory matched tested • United kingdom model - Free postage - New and Used
- Free postage - New and Used
300b electro harmonix • Factory matching double • Checked accuracy all - Free postage - New and Used
300b billington gold • Special matched pair • Nos tube valve - Free postage - New and Used
- Free postage - New and Used
Fix any issues • Till you satisfied - Free postage - New and Used
Have two pairs • Golden dragon 300b • Since sold amplifier - Free postage - New and Used
Electron tube 300b • Valves new factory • Matched pair high - Free postage - New and Used
Have two pairs • Golden dragon 300b • Since sold amplifier - Free postage - New and Used
This was brought • New from western • Electric unfortunately arrival - Free postage - New and Used
Rate item arrived • Matched pair cossor • Vacuum tubes300b model - Free postage - New and Used
Matched pair premium • Shuguang treasure 300b • Vacuum tube replace - Free postage - New and Used
Premium — over £300
300b sovtek made • Ussr matched pair • Tubes tube 5mm - Free postage - New and Used
Very hard source • Electronic authorized dealer - Free postage - New and Used
- Free postage - New and Used
Toroidal design provides • High efficiency low • Noise minimal hum - Free postage - New and Used
300b matched pair • Pcs these have • Beautiful mid range - Free postage - New and Used
Price piece buy • Bulk choose quantity • Please message all - Free postage - New and Used
Carel pco5 airedale • Programmable controller chilling • Heating systems made - Free postage - New and Used
Tube multiple model • Selectable fix any • Issues till you - Free postage - New and Used
Western electric original • 300b used 314 • Side tip discolored - Free postage - New and Used
Not you can • Change bias resistor • Enjoy deliciously rich - Free postage - New and Used
Two sophia electric • Princess 300b tubes • Nominal spec 100 - Free postage - New and Used
Two sophia electric • Princess 300b tubes • Nominal spec 100 - Free postage - New and Used
Sale pair psvane • Acme 300b tubes • Mint condition this - Free postage - New and Used
Linlai elite series • Vacuum tube end - Free postage - New and Used
Triode trk 300 • 300b single tube • Ended circuit using - Free postage - New and Used
- Free postage - New and Used
Try this: 6550 tube | 6l6 tube | 807 valve | black white portable tv | ecc83 valve | ez81 valve | ferrograph reel reel | garrard plinth | gec kt88 | glass valve
🔥 Best eBay deals on 300b tube
See all listings on eBay →These 48 listings for 300b tube are the lowest-priced items currently in our index. Prices are sorted ascending so you can quickly gauge the market before going further.
4pcs 4 Pin U4A Bakelite Vacuum
£4
4-20pcs Vacuum Tube Silicone
Silicone damper ring • 18mm 6a2 6k4 • 6z4 39mm 2a3
£5
4-20pcs Vacuum Tube Silicone
Silicone damper ring • 18mm 6a2 6k4 • 6z4 39mm 2a3
£5
Everything you need to know about 300b tube
Whether you are looking for a brand-new or second-hand 300b tube, 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 £3.89, while premium listings can reach £975.06 — giving you a wide budget spread to work with. The average price of £250.68 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.