JJ 300B Power Vacuum Tube (Matched)
Need matched power tubes? Don't worry! Price includes matching in any quantity you need for no extra charge. Need a matched pair? Just order "2" tubes. For a matched quad order "4" tubes. Matched sextets and octets are available as well.The JJ Electronics 300B vacuum power tube provides a lush, detailed, and harmonically rich sound. This tube boasts a classic 300B tube sound signature, a distinct emphasis on warmth and midrange presence. The midrange is where the JJ Electronics 300B power tube truly excels, providing an immersive listening experience that giving life to the music. The tube's bass response is robust, adding weight to the music without sacrificing clarity. High frequencies are presented with a refined sophistication, contributing to an overall balanced and pleasing audio presentation. The JJ Electronics 300B tube embraces the delicate balance between detail and musicality, making it suitable for a diverse range of genres.
JJ manufacturers this 300B tube with an extra heavy glass bottle and ceramic base.
Be sure to read the great 300B tube review and comparison from the Wall of Sound.
Other JJ Electronics tubes
300B Tube TypesAdditional Information and Downloads
Reviews:
300B Tube Reviews
Downloads:
JJ 300B Datasheet (PDF)
Download Adobe Acrobat PDF reader
Warranty Information and Return Policy
Warranty Period: 3 monthsAll our tubes are guaranteed for 3 months from the date of purchase. (Any exceptions will be noted on that tube's Warranty tab)
If you receive a tube that does not perform to the manufacturer's specifications, please do the following:
- contact us to get a return authorization
- return it via regular mail within 90 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.
Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.
We can not accept returns that don't have an authorization, are past 3 month, or are returned improperly.
These guidelines may be updated without notice.
Ratings & Reviews
4 reviews
JJ 300B | Fantastic affordable 300B
by Gavin
The JJ-300B is very durable and good sounding tube at a fraction of the cost of a WE 300b. Measures exactly like a WE 300B although it sounds very different. I actually prefer the JJ and EML 300B variants over WE. The JJ being the most affordable and EML sounding by far the best assuming you have deep pockets.
JJ 300B | Works fine but . . .
by Speedybik
This JJ-300B tubes have run my 300B Pro MDA (french WE91 version) for a very short period of time. Same thing with Sun Audio SV-300B. Flat sound without any magic or mystery 300B are supposed to sing. Compared with VA 4300B, Shuguang 300B-Z, or Shuguang 300B-98, those 3 were far away better. IMHO, the last choice you can make
Meaty, beaty, big and bouncy!
by Noam Bronstein
I recently reviewed the whole fleet of 300B tubes. The JJ is a big, heavy construction tube with a big, full sound - but still lively and fast. Excellent sonics overall. It had the best bass foundation, and was superb on percussion. For my full review see my website, www.wallofsound.ca
RE this tube
by RH Kowalski
I had purchased a pair of these 3 years ago and have no regrets. They sound great in my Cary 300SEI with good highs, mids, and bass. They are tough tubes as well.