Filters
Price
Pricing
Shipping
Condition
Clear all filters

Save big on Sale Bargains - Up to 82% off on 300B Tubes

TODAY'S BEST DEALS
TOP DEAL
2x NOS 300B JJ Tubes Factory matched Pair Vavle New old Stock Made in Slovak Rep
2x NOS 300B JJ Tubes Factory matched Pair Vavle New old Stock Made in Slovak Rep
eBay
£299.00
SEE DETAILS
Amplifier Valve tubes PSVANE 300B-N 300B HiFi Matched pair New tested=2 pcs
Amplifier Valve tubes PSVANE 300B-N 300B HiFi Matched pair New tested=2 pcs
£172.99
eBay
Info
Matched Pair  300B New Valve Tubes Gold Class Made By Shuguang China
Matched Pair 300B New Valve Tubes Gold Class Made By Shuguang China
£210.00
eBay
Info
Matched Quad 300B ShuGuang HiFi Vacuum Tubes Amplifier New Tested 300B Psvane
Matched Quad 300B ShuGuang HiFi Vacuum Tubes Amplifier New Tested 300B Psvane
£184.00
eBay
Info
PSVANE Mark II 300B Premium Vacuum Tubes 300B-T Matched pair(2pcs)
PSVANE Mark II 300B Premium Vacuum Tubes 300B-T Matched pair(2pcs)
£348.00
eBay
Info
Matched Pair (2 tubes) Electro Harmonix 300B tubes,Gold Grid,NEW
Matched Pair (2 tubes) Electro Harmonix 300B tubes,Gold Grid,NEW
£143.81
eBay
Info
KR AUDIO KR-300B BALLOON VACUUM TUBES (23% VAT incl) (MATCHED PAIR) BEST300B.COM
KR AUDIO KR-300B BALLOON VACUUM TUBES (23% VAT incl) (MATCHED PAIR) BEST300B.COM
£799.00
eBay
Info
Matched Pair PSVANE Vacuum Tubes 300B-T Mark II Classic TII
Matched Pair PSVANE Vacuum Tubes 300B-T Mark II Classic TII
£385.00
eBay
Info
Matched Pair PSVANE Vacuum Tubes 300B HiFi-Series
Matched Pair PSVANE Vacuum Tubes 300B HiFi-Series
£160.00
eBay
Info
Matched Pair (2 tubes) Electro Harmonix 300B tubes,Gold Grid,NEW
Matched Pair (2 tubes) Electro Harmonix 300B tubes,Gold Grid,NEW
£176.40
eBay
Info
KR AUDIO KR-300B 2 NEW VACUUM TUBES (23% VAT incl) (MATCHED PAIR) BEST300B.COM
KR AUDIO KR-300B 2 NEW VACUUM TUBES (23% VAT incl) (MATCHED PAIR) BEST300B.COM
£659.00
eBay
Info
TRON Atlantic 300B Power Amplifier with Emission Labs 300B tubes.
TRON Atlantic 300B Power Amplifier with Emission Labs 300B tubes.
£6250.00
eBay
Info
New Version Shuguang Treasure 300B-Z Vacuum Tubes Matched Pair Brand New
New Version Shuguang Treasure 300B-Z Vacuum Tubes Matched Pair Brand New
£245.00
eBay
Info
Brand New 2PCS PSVANE 300B-T MKII Vacuum Tubes Grade Matched Pair HIFI tube
Brand New 2PCS PSVANE 300B-T MKII Vacuum Tubes Grade Matched Pair HIFI tube
£312.99
eBay
Info
4 Pin UX4 Ceramic Tubes Socket for 2A3, 300B, etc.  With Gold plated contacts
4 Pin UX4 Ceramic Tubes Socket for 2A3, 300B, etc. With Gold plated contacts
£5.75
eBay
Info
Matched pair Psvane 300B-T MKII classic grade Vacuum Tubes 300B
Matched pair Psvane 300B-T MKII classic grade Vacuum Tubes 300B
£249.99
eBay
Info
2x Cary Audio Design Branded 300B Amplifier Power Valves / Vacuum Tubes
2x Cary Audio Design Branded 300B Amplifier Power Valves / Vacuum Tubes
£300.00
eBay
Info
Matched Pair Psvane Gold 300B -TⅡ New Mark Ⅱ Series 300B Vacuum Tubes
Matched Pair Psvane Gold 300B -TⅡ New Mark Ⅱ Series 300B Vacuum Tubes
£278.00
eBay
Info
Matched Pair Classic Grade Psvane 300B-T Mark II Vacuum Electronic Tube Tubes
Matched Pair Classic Grade Psvane 300B-T Mark II Vacuum Electronic Tube Tubes
£292.00
eBay
Info
New 1pc Psvane WE300B Vacuum Tubes 1:1 WE300B amplifier DIy tube 300B
New 1pc Psvane WE300B Vacuum Tubes 1:1 WE300B amplifier DIy tube 300B
£298.99
eBay
Info
1 Matched pair Amplifier Valves Vacuum Tubes Shuguang WE300B PLUS Replace 300B
1 Matched pair Amplifier Valves Vacuum Tubes Shuguang WE300B PLUS Replace 300B
£528.99
eBay
Info
Matched Pair WE300B New Tested Nature Sound 300B Western Electric Vacuum Tubes
Matched Pair WE300B New Tested Nature Sound 300B Western Electric Vacuum Tubes
£395.00
eBay
Info
300B SVETLANA WINGED C MATCHED PAIR VALVE/TUBE (LC2)
300B SVETLANA WINGED C MATCHED PAIR VALVE/TUBE (LC2)
£400.00
eBay
Info
300B BILLINGTON GOLD CHINESE 2PIECES MATCHED PAIR TUBE VALVE
300B BILLINGTON GOLD CHINESE 2PIECES MATCHED PAIR TUBE VALVE
£202.00
eBay
Info
Finished 300B Tube Amplifier Left and Right Channel Split Pure Class A Tube Amp
Finished 300B Tube Amplifier Left and Right Channel Split Pure Class A Tube Amp
£470.00
eBay
Info
4pc Shuguang 300B-98 Matched Quad 300B Vacuum Tube  Bakelite Base Tube AMP DIY
4pc Shuguang 300B-98 Matched Quad 300B Vacuum Tube Bakelite Base Tube AMP DIY
£230.99
eBay
Info
One (1) 300B WESTERN ELECTRIC Hi-Fi Amp Vacuum Tube - recently tested ✰✦
One (1) 300B WESTERN ELECTRIC Hi-Fi Amp Vacuum Tube - recently tested ✰✦
£3125.00
eBay
Info
PSVANE UK 300B-L 300BL Vacuum Tube Replace 300B Hifi DIY Factory Matched Pair*1
PSVANE UK 300B-L 300BL Vacuum Tube Replace 300B Hifi DIY Factory Matched Pair*1
£199.00
eBay
Info
4pc Shuguang 300B-98 Matched Quad 300B Vacuum Tube Ceramic Base Tube AMP DIY
4pc Shuguang 300B-98 Matched Quad 300B Vacuum Tube Ceramic Base Tube AMP DIY
£245.99
eBay
Info
 New 2PCs PSVANE 300B-N HiFi Vacuum Tube Directly-Heated  Cathode Triode 300B
New 2PCs PSVANE 300B-N HiFi Vacuum Tube Directly-Heated Cathode Triode 300B
£156.99
eBay
Info
New 4PCs PSVANE 300B-N HiFi Vacuum Tube Matched quad Triode power tube 300B
New 4PCs PSVANE 300B-N HiFi Vacuum Tube Matched quad Triode power tube 300B
£312.99
eBay
Info
Psvane Acme Series 300B Vacuum Tube Matched Pair All New
Psvane Acme Series 300B Vacuum Tube Matched Pair All New
£799.99
eBay
Info
Matched Pair Psvane 300B -N 300B HiFi New Tested Vacuum Tube For Tube Amplifier
Matched Pair Psvane 300B -N 300B HiFi New Tested Vacuum Tube For Tube Amplifier
£168.00
eBay
Info
Matched Pair New Tested 300B-L 300B UK Style Psvane Vacuum Tube For Amp
Matched Pair New Tested 300B-L 300B UK Style Psvane Vacuum Tube For Amp
£220.99
eBay
Info
2x Shuguang Natural Sound 300B-T Matched Pair Vacuum Tube replace 300B-98 WE300B
2x Shuguang Natural Sound 300B-T Matched Pair Vacuum Tube replace 300B-98 WE300B
£290.00
eBay
Info
4pcs Golden Voice GV 300B Matched Quad Valve Tube
4pcs Golden Voice GV 300B Matched Quad Valve Tube
£255.00
eBay
Info
4pcs Golden Voice GV 300B+ Matched Quad Valve Vaccum Tube
4pcs Golden Voice GV 300B+ Matched Quad Valve Vaccum Tube
£340.00
eBay
Info
4 x Psvane HiFi 300B Vacuum Tube Amplifier , New Tested 300B Matched Quad
4 x Psvane HiFi 300B Vacuum Tube Amplifier , New Tested 300B Matched Quad
£184.00
eBay
Info
2pcs 1 Matched Pair  Psvane 300B-T Classic Grade Amplifier  vacuum tube 300B
2pcs 1 Matched Pair Psvane 300B-T Classic Grade Amplifier vacuum tube 300B
£245.99
eBay
Info
2pcs/ 1 Matched Pair Psvane 300B Valve Tube for HIFI DIY tube amplifier
2pcs/ 1 Matched Pair Psvane 300B Valve Tube for HIFI DIY tube amplifier
£325.99
eBay
Info
PX4 EML 2 NEW VACUUM TUBES BEST300B.COM (MATCHED PAIR)
PX4 EML 2 NEW VACUUM TUBES BEST300B.COM (MATCHED PAIR)
£1099.00
eBay
Info
Matched Pair Svetlana Electron Devices (SED) 300B tube, NOS from 1998, Brand New
Matched Pair Svetlana Electron Devices (SED) 300B tube, NOS from 1998, Brand New
£733.66
eBay
Info
1 New Matched Pair  Shuguang Treasure 300B-Z Vacuum Tube Replace 300B
1 New Matched Pair Shuguang Treasure 300B-Z Vacuum Tube Replace 300B
£225.99
eBay
Info
1  Matched Pair  Shuguang Natural Sound 300B-T Tube AMP DIY  vacuum Tube 300B
1 Matched Pair Shuguang Natural Sound 300B-T Tube AMP DIY vacuum Tube 300B
£296.99
eBay
Info
520B-V3 EML 2 NEW VACUUM TUBES (23% VAT incl) (MATCHED PAIR) BEST300B.COM
520B-V3 EML 2 NEW VACUUM TUBES (23% VAT incl) (MATCHED PAIR) BEST300B.COM
£939.00
eBay
Info
KR AUDIO PX-4 2 NEW VACUUM TUBES (MATCHED PAIR) BEST300B.COM
KR AUDIO PX-4 2 NEW VACUUM TUBES (MATCHED PAIR) BEST300B.COM
£669.00
eBay
Info
KR AUDIO KR 242 2 NEW VACUUM TUBES (MATCHED PAIR) BEST300B.COM (VAT included)
KR AUDIO KR 242 2 NEW VACUUM TUBES (MATCHED PAIR) BEST300B.COM (VAT included)
£849.00
eBay
Info
KR AUDIO KR 211 2 NEW VACUUM TUBES (23% VAT incl) (MATCHED PAIR) BEST300B.COM
KR AUDIO KR 211 2 NEW VACUUM TUBES (23% VAT incl) (MATCHED PAIR) BEST300B.COM
£859.00
eBay
Info
Matched Pair Psvane WE300B 1:1 Western Electric 300B Vacuum Tube Amplifier
Matched Pair Psvane WE300B 1:1 Western Electric 300B Vacuum Tube Amplifier
£510.00
eBay
Info
Matched Pair ShuGuang WE300B 1:1 Western Electric 300B Vacuum Tube Amplifier
Matched Pair ShuGuang WE300B 1:1 Western Electric 300B Vacuum Tube Amplifier
£405.00
eBay
Info
BEST300B.COM KR AUDIO KR-45 2 NEW VACUUM TUBES (23% VAT incl) (MATCHED PAIR)
BEST300B.COM KR AUDIO KR-45 2 NEW VACUUM TUBES (23% VAT incl) (MATCHED PAIR)
£689.00
eBay
Info
2pcs Shuguang WE300B PLUS Matched Pair replace Western Electric 300B vacuum tube
2pcs Shuguang WE300B PLUS Matched Pair replace Western Electric 300B vacuum tube
£508.00
eBay
Info
New 1 Matched pair PSVANE A300B Acme Series audio amp Vacuum Tube 300B-Z WE300B
New 1 Matched pair PSVANE A300B Acme Series audio amp Vacuum Tube 300B-Z WE300B
£748.99
eBay
Info
274B MESH EML NEW VACUUM TUBE (23% VAT incl) BEST300B.COM
274B MESH EML NEW VACUUM TUBE (23% VAT incl) BEST300B.COM
£439.00
eBay
Info
5U4G MESH EML NEW VACUUM TUBE (23% VAT incl) BEST300B.COM
5U4G MESH EML NEW VACUUM TUBE (23% VAT incl) BEST300B.COM
£459.00
eBay
Info
Matched Pair PSVANE WE300B Tube Western Electric 1:1 Replica
Matched Pair PSVANE WE300B Tube Western Electric 1:1 Replica
£799.00
eBay
Info