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300B (Matched Pair / Options)

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JJ Valves

Name: 300B (Matched Pair / Options)
Brand: JJ Valves
SKU: 300B-JJ (Matched PAIR)
Price: 312.00 GBP
Availability: InStock

300B (Matched Pair / Options)

£312.00 £260.00

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In stock

SKU

300B-JJ (Matched PAIR)

Brand

JJ Valves

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JJ-300B Single + £156.00 £130.00

JJ-300B Pair + £312.00 £260.00

JJ-300B Quad + £624.00 £520.00

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JJ 300B Valves

The JJ 300B vacuum tube is a popular modern production version of the classic 300B triode, originally designed by Western Electric in the 1930s. It is favoured by audiophiles and tube amp enthusiasts for its smooth, warm, and detailed sound, particularly in single-ended triode (SET) amplifier circuits. Here's a meta-analysis of the JJ 300B valve, covering build quality, sound characteristics, technical specs, and user impressions.

JJ 300B Valves are supplied matched in Pairs, Quads, Sextets

We supply two readings so you can get the best JJ 300B at the best price.
PC (Plate current draw)
TC (Transconductance)
We do not rebrand these valves, and we certainly do not freeze them.

Country of Origin: Slovakia (JJ Electronic)
Construction: Solid internal structure, thick glass envelope, and robust-looking components.
Reliability: Generally considered reliable for daily use; typical lifespan ranges from 1,000–5,000 hours, depending on usage and biasing.
Socket Type: 4-pin (UX4 base)