33s30b

OldSound

6SN7GT RCA VALVE 33S30B 5692 B65 13D2 CV1988 DOUBLE TRIODE AUDIO PREAMPLIFIER... OldSound €259 48% Dec 3, 2025

OldSound

B65 OSRAM MARCONI VALVE 33S30B 5692 QA2408 13D2 CV1988 ORIGINAL UK RARE DOUBLE TRIODE... OldSound €349 17% Jun 23, 2025

OldSound

A2408 B65 OSRAM MARCONI VALVE 33S30B 5692 13D2 CV1988 ORIGINAL UK RARE DOUBLE TRIODE... OldSound €449 36% Jun 23, 2025

Yahoo Auctions

[ unused goods ]33S30B Standard vacuum tube [ 6SN7,6SL7,5692 ] standard 2 ps pair NO.1 Yahoo Auctions Auction bid
¥450,000 Jul 19, 2025

OldSound

6SN7GT FIVRE 33S30B 5692 B65 13D2 CV1988 VALVE PAIR DOUBLE TRIODE PREAMPLIFIER AUDIO... OldSound €894 60% Nov 17, 2023

OldSound

6SN7GT FIVRE VALVE (SYLVANIA Structure) PAIR 33S30B 5692 B65 13D2 CV1988 ECC32 DOUBLE... OldSound €219 Mar 31, 2026

OldSound

5692 RCA 33S30B 6SN7GT B65 13D2 CV1988 ECC32 UNITED ELECTRONIC VALVE DOUBLE TRIODE... OldSound €269 Sep 1, 2023

OldSound

6SN7GT BRIMAR BVA STC 33S30B 5692 B65 13D2 CV1988 MADE in ENGLAND DOUBLE TRIODE VALVE... OldSound €404 10% Jan 12, 2024

OldSound

5692 RCA 33S30B 6SN7GT B65 13D2 CV1988 ECC32 CEI VALVE DOUBLE TRIODE AUDIO PREAMPLIFIER... OldSound €279 8% Sep 1, 2023

OldSound

6SN7GT BRIMAR BVA 33S30B 5692 B65 13D2 CV1988 MADE in ENGLAND DOUBLE TRIODE VALVE AUDIO... OldSound €237 5% Jan 12, 2024

OldSound

6SN7GTA FIVRE VALVE (SYLVANIA Structure) 6SN7GT 33S30B 5692 B65 13D2 CV1988 ECC32... OldSound €59 Feb 13, 2026

OldSound

6SN7GTB GENERAL ELECTRIC VALVE (SYLVANIA) 6SN7GT 33S30B 5692 B65 13D2 CV1988 ECC32... OldSound €69 Feb 14, 2026

OldSound

VT-231 KEN-RAD VALVOLA PAIR 6SN7GT 33S30B 5692 B65 13D2 CV1988 ECC32 DOUBLE TRIODE... OldSound €299 Mar 30, 2026

OldSound

6SN7GTB GENERAL ELECTRIC TUBE 6SN7GT 33S30B 5692 B65 13D2 CV1988 ECC32 DOUBLE TRIODE... OldSound €109 Feb 13, 2026

OldSound

6SN7GT SICTE S.I.C.T.E. VALVE VT-231 33S30B 5962 B65 13D2 CV1988 DOUBLE TRIODE AUDIO... OldSound €79 Sep 1, 2023