Specification

User Reviews

Royal Princess™ 300B

Positive Feedback Review (click here for complete review): "...the Royal Princess is much better through the mid-range than the Western Electric was. It's also no contest in the bass, as the Royal Princess has better bass depth, definition, impact, and articulation than any vacuum tube—not just 300B tubes—I have ever encountered when driving my Tannoy Westminster Royal SE loudspeakers—it is simply incredible! The highs too, are extended, refined, and have a naturalness to them that is breathtaking to hear..." ––– Jeff Day (response to the review)

Sophia Electric applied all expertise learned from the past to this new flagship Royal Princess 300B model. It has the best virtues of both Princess mesh plate and Princess carbon plate 300B tubes and sound light-years ahead of any 300B tubes made in the history including both Sophia Electric Princess Carbon Plate 300B and Princess Mesh plate 300B tubes that won worldwide praises.

These Royal Princess 300B tubes are available to your local dealer’s show room for demo. Those, who can’t find a dealer in your area, can order from Sophia Electric directly 703-992-8546.

From the outside, the Royal Princess 300B tube looks similar to Carbon Plate Princess 300B (share the same glassware enclosure), however, the design philosophy is quite different and the internal design and material is different as well. You have to listen to it to hear the dramatic sonic upgrade. I am confident that you will report the positive outcome once you have tried the Royal Princess 300B tubes.