Sophia Electric 274A Mesh Plate Tubes
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Reviewed by Tone Audio (Issue 2)
Sophia Electric 274A mesh plate rectifier tube is identical to Sophia Electric 274B mesh plate rectifier tube except 274A is a 4-pin based tube vs. 274B is an 8-pin octal-based tube.
Note(*): Princess 274A mesh plate tube may require the first stage capacitor (capacitor input) to be less than 8MFD; otherwise, it would shorten the 274A life span (very much like smoking is bad for your health). It would not be a problem with common choke input. Please consult your amplifier maker or refer to a tube manual.
The maximum current capability for Sophia Electric 274A mesh plate tube is 90ma, suitable for tube pre-amp and mono-block 45 single ended and 2A3 mono-block single ended.
Pricing:
- Option 1: $299.99 per Princess 274A mesh plate tube with a one-year warranty.
- Option 2: $249.99 per Princess 274A mesh plate tube with a 30-day warranty.