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Catalog (vacuum tubes)

Tube-catalogue

“I received the tubes [TJ Fullmusic mesh plate ST 300B] in perfect condition and wow!!!! What a beautiful sound they produce.  Going right now through some John Coltrane and Miles Davis documents…unbelievable sound.” – RB, United States

“Sonically this valve [TJ 300B] was a revelation…  It offers that clarity, directness and openness I know from my 45’s but adds power and even more resolution. I love it. The tonal balance is very even-handed, the soundstage is ridiculously extended and opened up. Detail, especially these little background things are exceptionally well resolved” – EnjoytheMusic.com

Many buyers are amazed with the sound when they replace their tubes with TJ Fullmusic. They are manufactured in a small, specialized factory in Tianjin, China. Since year 2002, TJ Fullmusic has been our top seller. We always provide 12 months warranty for our TJ Fullmusic tubes. We did that in the past and we will continue to do so.

Read more :

How do we test our TJ Fullmusic Tubes?

TJ factory tour (2003)

 

List of tubes we carry:

TJ Fullmusic 300B (solid plate ST, mesh plate globe, mesh plate ST, Special Edition ST, CNE ST)

TJ Fullmusic 300B Solid Plate ST (Matched Pair)TJ Fullmusic 300B Mesh Plate Globe (Matched Pair)TJ Fullmusic 300B Mesh Plate ST (Matched Pair)TJ Fullmusic 300B Special Edition ST Shape (Matched Pair)TJ Fullmusic 300B CNE (Matched Pair)

2A3, 45, 12AX7, 12AU7, 12AY7, 6SN7, 6SL7, EL34, 6550, KT88 and NOS.

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Tube Test and Curve Matching

tube-matching

Do you want a perfect matched-pair or a perfect matched-quad?

Does your amp need tubes  within a certain bias arrange or plate current range?

Get what you need. Check the test results and the curves before buying. Quote the tube number when you place an order. We will serve it for you but it’s first-come-first-serve.

300B etc. are done, other tubes will follow.

TJ Fullmusic 300B CNE ST (Dome) Shape Matched Pair

TJ Fullmusic 300B CNE ST (Dome) Shape Matched Quad

TJ Fullmusic 300B Mesh Plate Globe Shape Matched Pair

TJ Fullmusic 300B Mesh Plate Globe Shape Matched Quad

TJ Fullmusic 300B Mesh Plate ST (Dome) Shape Matched Pair

TJ Fullmusic 300B Mesh Plate ST (Dome) Shape Matched Quad

TJ Fullmusic 300B SE ST (Dome) Shape Matched Pair

TJ Fullmusic 300B SE ST (Dome) Shape Matched Pair

TJ Fullmusic 300B SE ST (Dome) Shape Matched Quad

TJ Fullmusic 300B Solid Plate ST (Dome) Shape Matched Pair

TJ Fullmusic 300B Solid Plate ST (Dome) Shape Matched Quad

TJ Fullmusic 45 Matched Pair

TJ Fullmusic 2A3 Matched Pair

TJ Fullmusic 6SN7 Matched Pair

TJ Fullmusic 6SL7 Matched Pair

TJ Fullmusic 12AX7 Matched Pair

TJ Fullmusic 12AU7 Matched Pair

TJ Fullmusic 101D Matched Pair

TJ Fullmusic 102D Matched Pair

TJ Fullmusic KT88 Matched Quad

TJ Fullmusic Clearance

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How do we test our TJ Fullmusic tubes?

Tube tester (curve trace)

We curve trace test each TJ Fullmusic tube by our Amplitrex AT1000 tube tester.

Results are exported to a spreadsheet for comparison and matching. Below is a interactive sheet to show the curve and test result of each tube. You can check the test reports before you place your order.

The graph will take a while to upload especially if you are browsing in mobile device.

How to use? Look up the tube ID in 300B-DB sheet. Then go back to 300B-chart sheet and input the tube ID there. If you want to compare only two tubes, you can input “2” for the C and D tube to hide tube C and tube D.

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Chilling at the Bee­Hive: A Group Test of Nine Different 300B Valves

300b
To Be or Not Be – 
Those are the 300 Questions Here

 

…Hence, just because a valve has received here a score overall of 90 out of 100 it is not just the only one worth buying, it may not necessarily match your taste and system as well as another person’s system and taste. Equally, just because a valve has received a low score it should be excluded from consideration. On the contrary, the sonic characteristics of this valve may very well suit your system very well. So please read the whole text and try putting my comments on relative sonics into the context of your taste and system.

 

Now, Let the Games begin!

 

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TJ Full Music Factory Tour

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Factory Background

The TJ factory in Tianjan province manufactures WE replicas with a few interesting and creative variations. 300B tubes are available as ST or Globe style with the Globe offering both solid and mesh-style (perforated) anode. The factory is a private enterprise (no state involvement) and the owner, Mr. Liu is a veteran of the tube industry having worked for many years in the Beijing Tube Factory. He graduated from university in 1955 in the field of vacuum tube technology and holds a number of QC patents in that field. He has previously produced CRTs for NEC. The TJ name is quite new to the West but has a well established following and solid reputation amongst audiophiles in Japan.

2003 Tianjin Tube Factory Tour

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Apr 2003, in the midst of the SARS epidemic, saw me on a plane to Beijing and from there 1hr by car to Tianjin. Transportation provided by Opera/Consonance. Liu of Opera (not to be confused with Mr Liu of TJ tube factory) came along as tour guide. Mr Liu met us and we got straight down to business the usual way in China: lunch. The visit started with a meal at a famous Tianjin seafood restaurant. Fish steaks braised in Coke (the drink) is Tianjin’s signature dish. The city is on the northern coast of China. People in this place are super-friendly, a trait of the Tianjin populace according to Liu.
Then on to the factory, a new facility since last summer. We were required to wear plastic booties since everything is super clean. We started in Mr Liu’s office where he has a display of his creations. The factory is a private enterprise (no state involvement) and the owner, Mr. Liu is a veteran of the tube industry having worked many years for the Beijing Tube Factory. He graduated from university in 1955 in the field of vacuum tube technology and holds a number of QC patents in that field. He has previously produced CRTs for NEC. Last October he visited my office in Hong Kong and I showed him a 6N11 military tube that is known locally to be an excellent sounding equivalent to a 6922. He was quite excited to tell us that the tube was his creation for the military, the only true frame grid made in China and one of the most difficult tubes he ever put into production at BJ tube factory. The factory is smallish with about a dozen workers, most of whom are old, highly skilled workers from the tube industry. The specialized machines you see in the pictures were made by Mr Liu. A sample of the products coming out of the factory. Up until now there has been a WE flavour to the lineup but if you look closely you can see some future products that aren’t WE.

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Liu and Liu. The factory is the child of Mr Liu on the left. The baby-faced Liu on the right was my tour guide and the  engineer/audiophile  (‘feverish  friend’  in  Chinese) behind DIYHFS kits and Opera products. The machine between them strings the filament on it’s frame.

 

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Internal parts worked on inside this ‘clean box’ to reduce possibility of contamination.

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Preparation electrolytic bath to provide the correct chemistry for individual parts.

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After  parts are fitted, the bottom  is heated  and shaped  for insertion  of inner  glass component that the leads feed from.

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After  parts are fitted, the bottom  is heated  and shaped  for insertion  of inner  glass component that the leads feed from.

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followed by a trip  this  little Frankenstein device  which completes the evacuation.

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This is the plate current during the final evacuation process. No one here worries about plate-glow, only non-glow.

 

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Between each stage of production tubes are processed in these vacuum  and heating ovens  to eliminate
trace  gases and keep the temperature in  working range.

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to the ultrasonic baths, but none were here at the time.

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Then the ‘aging’ room. More plate glow. Somewhere in between the bases were attached; never saw that part.

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This is Mr Liu at the control console (he built from scratch) developing a new tube (PX25). Each electrical parameter in individually controlled. Well we’ve been pressing for a 45. I saw the way he does it: RCA data sheet and official plate curves on the desk before him, Tektronix 570 curve tracer (thanks Ed Sawyer) showing the actual plate curve he’s getting. Not quite the same yet so another prototype is made with mechanical adjustments to the internal parts and try again. Many development cycles/prototypes before the original spec is achieved. Mr Liu said that the 45 has been a tough one. Also in the works is this PX25 mesh plate (almost done), and an 845.

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This is Mr Liu and me. I was sure I had more hair than him. Must be the lighting.
And that’s the end. Time to get back to BJ, HK and SARS

Brian
2003