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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Internal structures match the WE style very closely, the glass is quite thick and heavy. Their products are available from a number of sources under the Full Music and All Music label. The original blind group listening test that provided much of the harmonxi for this report was conducted on no lesser day then the 7 th of June – Election Day in the UK. Amazon Music Stream millions of songs.

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Box LaFox, IL This valve is tremendous value for money and offers evenly balanced sound slightly on the warm and dark side, thus suited best to overly bright systems. Videos Enjoy the Music.

This valve may have needed “burn in”, however my experience has so far been that few valves change their sound hafmonix after burn in. Learn more about Amazon Prime. My test pair was actually the replacement pair supplied for the Billie Kit Amplifier where it comes as standard.

Sorry, we’re having trouble showing recommendations right now. This report should have been written a little after that, but alas, many things intervened – not the least a love affair with the throes of young and foolish love Amazon Second Chance Pass it on, trade it in, give it a second life.

One advantage is that the solid anode version is a bit more rugged if run at very high dissipation. So please read the whole text harmonixx try putting my comments on relative sonics into the context of your taste and system.


Electro-Harmonix 300B

Sonically this valve clearly shows what made the reputation of the B – warm, expansive and open it offers great tonality – good Soundstaging, warmth, all those classic qualities. The test samples where purchased directly from Russia. In addition to the valves in my own harmonkx and those submitted by manufacturers and distributors I leaned heavily on friends and acquaintances to obtain a loan of B valves they had at hand to make the test as comprehensive as possible.

The soundstage delineation and depth electrl not ideal. Still, Jean Hiraga declared the B to be “the tube of the century” and in my view rightly so. On the contrary, the sonic characteristics of this valve may very well suit your system very well. The valves where pretty new but run in for around Hours. My own scoring is based on the use of the valves in a system 8 that essentially offers an in-room response from near 20Hz to way beyond 20KHz thanks to the large, high sensitivity loudspeakers, digital equalization and super tweeters I generally employ.

Even the legendary Western Electric B has been put back into production. If your system is already on the bright side this may be too much. So if your amplifier runs the output valve very hard this may be a better bet for long term reliability.

However the connection between Glass Bulb and base was worryingly loose and lacking in rigidity. This makes this B by far the cheapest currently offered. Sonically this valve failed to convince, sounding bright, harsh and edgy. Tonally the Svetlana B is evenly balanced with a beautifully delineated midrange and gorgeous sound staging. Balanced, detailed, direct harmonis and beautiful.

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Electro Harmonix B Melbourne Australia EH B

Microphonics of 300g valve appear lower than average. I could not sleep at night and finally had to visit my dentist who promptly decided root canal surgery was needed. Moreover, the friend who bought them still reports similar sonics many hours later. Please try again later. 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.


The Valve has a substantial ceramic base hagmonix in general appears well made. More power dissipation and better sound are claimed. Given the current pricing and performance this Valve comes recommended, with a caveat on the excessively bright tonal balance that will exclude this Valve from many systems. From a situation where there was basically no real choice we have come to one where the choice is huge and perplexing. As such some will work better in some systems than in others.

Amazon Drive Cloud storage from Amazon. Amazon Renewed Refurbished products with a warranty. Amazon Advertising Find, attract, and engage customers. Get to Know Us. Share Facebook Twitter Pinterest. Made in Hunan China this valve is by now a veteran. Ideally look for comments from people that own the same Amp and ideally the same speakers as you do.

Internal structures resemble the Sovtek valves, but the anodes are a shiny black finish.

In one of my amplifiers I can switch between many Valves including the The tonal balance is very even-handed, the soundstage is ridiculously extended and opened up. Compared to haarmonix ceramic base version this Valve sounded more subdues in the treble range, also having a slightly more constricted soundstage.

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Manufacturing was reasonable and consistency good.