Electro Harmonix – B Power Vacuum Tube The B Power Vacuum Tube is a directly heated power triode for use in Hi-Fi amplifiers. Plate curves and static. Buy Electro-Harmonix B EH Vacuum Tube Duet Platinum Matched: Tubes – ✓ FREE DELIVERY possible on eligible purchases. Electro-Harmonix B power triode tube with gold pins. Made in Russia. Premium version of the B EH with gold grid wire for increased.

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The valves are actually rebadged Reflector units, made in the Saratov Factory in Russia. Still, this report was slowly taking shape. The midrange had good detail and delineation with a slightly subdued high frequency content.

It does not offer those last, final levels of detail, space, airiness etc, but it offers solid, balanced and excellent performance. This harmonic was previously marketed by Svetlana USA, who in recent times seems to have suffered finical difficulties. As a result of considerations such as that I have tried very much to bring out each valves individual sonic character relative to the others in the test, in addition to assigning “absolute” scores based on relative performance 300v my system.

The history of poor reliability however makes good backup from a reliable and reputable dealer a must, so a recommendation with some question marks is on order.


Both valves where identical so I do not think this was an isolated fault. Have one to sell? At current prices and in the current market I feel this Valve is overpriced. Okay, hand me the drool towel.

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Epectro power dissipation and better sound are claimed. Internal structures are a little different from normal. This valve offered a very balanced sound, perhaps slightly dark but with strong bass.

Image Unavailable Image not available for Color: Microphonics of this valve appear lower than average. Still, Jean Hiraga declared the B to be “the tube of the century” and in my view rightly so.

However the connection between Glass Bulb and base was worryingly loose and lacking in rigidity.

EH B Gold Grid Cryo and Matched Pair- Cryoset Online Store- Electro Harmonix

Now, Let the Games begin! Also, if speakers with a rather limited frequency range are employed the midrange quality alone may be deciding in subjectively preferred valve.

Compared to the plastic base Reflector B the sound is slightly brightened up. However, it should by no means be taken as the gospel. As it is generally not possible to borrow Valves for a few days and listen, you will have to go by comments of such as reviewers and people commenting in the Usenet and on Discussion Boards. So if your amplifier runs the output valve very hard this may be a better bet for long term reliability.


Internal structures look common and but the filaments are supported on coiled springs different from the Western Electric type valve.

Detail, especially these little background things are exceptionally well resolved. This valve may have needed “burn in”, however my experience has so far been that few valves change their sound dramatically after burn in.

This makes this B by far the cheapest currently offered. Made in Hunan China this valve is by now a veteran. DIY HiFi Supply will ship the valves internationally and are pleasant to deal with but for one little detail.

While I can recommend most Valves within this line-up with the exception of the JJ and because of pricing the Cetron and EHX they come in general all with the “make sure they match your system” health warning. ComiXology Thousands of Digital Comics. Item is in your Cart.

Get fast, free shipping with Amazon Prime. Internal structures look common and without unusual features. Valves where tested blind and given five minutes warm-up before playing the same musical sequence. Be the first to review this item.

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