PSVANE AIR 300B-AT Vacuum Tube
Direct-heated triode for expressive SET amplifiers and refined vocal systems
Screened before shipping - Secure packaging - Global shipping
Description
The PSVANE AIR 300B-AT is a direct-heated power triode for compatible single-ended and push-pull 300B amplifiers. It is aimed at listeners who want saturated tone, spacious imaging, and the fluid midrange that made the 300B family a classic hi-fi output tube.
AIR 300B-AT replacement notes
- PSVANE AIR 300B-AT is a 300B direct-heated triode for compatible single-ended and push-pull 300B amplifiers.
- Use it only in amplifier positions that specify 300B or explicitly support a 300B replacement path.
- AIR 300B-AT and Treasure 300B-Z should be evaluated as different series choices, not duplicate product pages.
Before ordering AIR 300B-AT
- Select matched pairs when the amplifier uses one 300B per channel or when channel balance is important.
- Confirm whether the amplifier requires manual bias, fixed bias, or a technician check after tube replacement.
- If you are replacing another direct-heated triode label, confirm compatibility before ordering.
Compatibility
Use only in amplifiers designed for 300B output tubes. Confirm bias requirements, plate voltage limits, socket wiring, and whether the amplifier requires matched pairs before installation.
Sound Signature
Rich and dimensional with expressive vocals, rounded harmonics, and a relaxed but controlled presentation for acoustic, jazz, and vocal music.
Testing & Matching
Selected for output-stage use and checked before shipment. Matched pairs are recommended for stereo 300B amplifiers.
Shipping & Warranty
Warranty
90-day warranty against manufacturing defects. DOA coverage included.
View warranty policy ->Buying questions
What does PSVANE AIR 300B-AT replace?
PSVANE AIR 300B-AT replaces 300B tube positions in compatible amplifiers that are designed for 300B operation.
Is AIR 300B-AT sold as a single tube or matched pair?
AIR 300B-AT can be selected according to the amplifier requirement. Matched pairs are recommended for stereo 300B use.
Can 300B replace 845?
No. 300B and 845 are different direct-heated triode families and should not be interchanged unless a circuit is designed for both.
What amplifier type is AIR 300B-AT for?
PSVANE AIR 300B-AT is mainly for compatible 300B SET amplifiers and selected 300B push-pull amplifiers.
Should I check bias before replacing 300B tubes?
Yes. Check the amplifier manual or ask a qualified technician before replacing 300B output tubes.
Related buying paths
Other PSVANE tube options
PSVANE Treasure KT88-Z Power Tube Matched Pair
Black-glass KT88 pair for compatible push-pull output stages
In Stock
PSVANE Treasure EL34-Z Power Tube Matched Pair
EL34 output tube pair for compatible push-pull hi-fi and guitar amplifiers
In Stock
PSVANE Treasure CV181-Z / 6SN7 Driver Tube Matched Pair
Octal dual-triode pair for compatible CV181 and 6SN7-family positions
In Stock