5U4GB RCA low hours/like new 1970 (CT) a few white oxide flakes inside tube – getter like new 1% section balance

55/40

55/40

– top-rated 5U4G

Recommended for

– SET amps
– Wright Sound SET
– Audio Note P4 Balanced mono amps
– Dared MCP7 preamp with phono
– Singlepower
– Modwright Transporter
– Donald North Audio