PSVANE 2A3 Replacement Tubes
High-performance triode tubes
How to choose PSVANE 2A3 tubes
2A3 is a direct-heated triode used in compatible low-power single-ended amplifiers and selected 2A3 output designs. Shop this category when your amplifier manual clearly specifies 2A3 output tubes.
Choose Treasure 2A3-Z when you need a matched pair for a compatible 2A3 amplifier. It should not be selected as a drop-in substitute for 300B, 45, or another direct-heated triode unless the amplifier was designed for that tube family.
Best fit
- 2A3 single-ended amplifiers that use one output tube per channel.
- Paired 2A3 output positions where matching supports channel balance.
- Listeners replacing existing 2A3 tubes with a Treasure-series matched pair.
Buying notes
- Confirm filament voltage, plate voltage, and bias requirements before replacing 2A3 tubes.
- Use matched pairs for stereo 2A3 amplifiers when both channels are being replaced.
- Do not interchange 2A3 and 300B unless the amplifier maker explicitly supports both families.
Direct-heated triode amplifiers can involve high voltage and specific operating points. Follow the manual or use a qualified technician.
