Instead of typical tech talk about a new tube launch, this time we have a story to tell about the type 50 replica tube’s birth… by Steve Berger, a long time audiophile and music lover resides in NY:
“Foreword by Steve Berger:
In the early 1990s I got a call from Vincent Gallo. He had seen an ad for a Gibson GA-50 guitar amplifier that I was selling.
When I walked into his apartment, performing delivery of the goods, Chet Baker’s “Happy Little Sunbeam” was playing on a system consisting of a Western Electric 91A 300B amplifier and a lone Western 757 speaker mounted on the wall.
I had never experienced such sound before: Chet’s trumpet was right there in the room!
This was my first introduction to directly heated triodes and my life would never be quite the same after that day. Read more...
A new addition to the highly popular Shuguang Treasure series! We have brought in a very limited quantity to test market – if you are adventurous and experienced in tube rolling, we welcome you to take advantage of our introductory pricing and let us know how they compare to other 845′s on the market. Order yours HERE.
Like the rest of the ‘Black Bottle’ original Treasure Series that was introduced back in 2008, this model is the first venture to introduce carbon coating to high voltage 845 tubes as a technical break-through.
- Carbon compound coating to quickly dissipate heat generated from tube operation to achieve a ‘self cooling’ effect, plus absorbing external interference
- High quality German cathode material and 10% more enlarged emission area than typical 845 tube to ensure sufficient emission at time of high dynamic signal playback
- High voltage resistance design to ensure no flashing short will occur in operation
- Pure 24k gold coated grid to reduce internal noise and reduce secondary grid emission
- Elegant design tube base and leave no finger print residual
- Gold coated tube pins to improve conductivity, reduce signal loss and improve output efficiency Read more...
The long waited Treasure KT120-Z tubes in new glass shape are finally in stock! This model is much more difficult than KT88 to make, and production process take much longer.
For those who have been waiting for new stock arrival to place order, this is the time to get yours before it runs out…Thank you for your interest in this Treasure tubes that will replace TungSol KT120 with more musical sound.
Feedback received from Peter in Germany via email:
“These tubes really needs time (120+hr) to grow. Now, they are absolutely great. The best i’ve ever heard before, period……I’m very happy too with the big sound of the LS-type in my big amp. Even after 72 hours they sounds good, but now, after 120+hours, I’m in heaven. Tonality, detail (!!!) and room are just great. An absolute notably improvement to the Psvane 12AX7. The warm, precise, detailed and big sound fit perfect to my preference.
This new tube-setup let me discover several tones, noises, coherence in my musics I’ve never heard before, incredible!
Feedback from a recent customer Denis who purchased Psvane 12AU7-TII (GF grade A):
“Bonjour at Grant Fidelity
My Psvane 12Au7 are in, and as soon as i put them in my Italian hi fi preamplifier i loved them immediately, i mean not the tube themself but the music coming out of them.
i own NOS Amperex 12AU7 that i found amazing but lacking top end absolute clarity and transparancy, and i also tried the new Northen Electric 12AU7 that a friend borrowed to me , but with them i feel an evident tonal inacurracy in the mid-range, especially in the piano and vocal.
The psvanes beats them a lot!! better musicality and clarity/definition
i am very happy with my purchase
Check out our tube clearance for very limited quantity – First come, first served. No rain check on this model..
Purchase from HERE.
The prototype 12AX7 LX model has been very popular with worldwide interest and those who didn’t get hands on them have asked us to extend the offer longer… so here we are.. We have decided to extend the ‘feedback wanted’ price to our next prototype run with ‘carbon polymer black coating inside the tube’…Gold pin offering will be held off for now due to high gold price on commodity market.
Order now to secure your pair!
Hurry! – limited quantity only for ‘feedback wanted’ run and we love to hear from you how they sound for your ears, or your audience if you are a guitar player!
- ‘High Polymer Compound Carbon’ (HPCC) material used inside the tube to further quiet down the internal tube noise
- 25% more cathode effective area, improved cathode material, which lead to 25% more stronger electron emissions
- Improved triple mica plate structure to greatly decrease tube internal noise, make the tube even more suitable for portable application such as in high end guitar amplifiers and ultra high end home audio system so the tubes are less susceptible to system vibration induced tube noise. If you have a very sensitive super high end preamp and you have been quest for that ultra quiet tube, this might be your final answer. (As a reference, similar triple mica structure NOS 12AX7 tubes are now going for $250 per pair on the market) Read more...
Feedback received via email from Cary Audio’s technical staff about using WE845 in Cary amps:
“ I was able to evaluate at least the aspects I was most concerned about, e.g. the dissipation factor in the 805 amps. The 845 tube in these amps are biased right at the rated maximum for that tube, and I was concerned the Psvane version having only 75 watts of total dissipation might not work well in these units. Since some of our customers had started using them I thought it would be a good idea to see if they in fact would survive. In addition, I wanted to see if there was any improvement in the sound. As it turned out the dissipation set in these amps with the samples sent were at about 115 watts per tube which is considerably above what they are rated for. However, I let them play continuously for over a week and bias remained stable, and there was no red-plating. In addition, the improvement in presentation was considerable. I never noticed the graininess in the Chinese 845 tubes until I tried these. The realism is almost scary with the Psvane tubes. Soundstage more 3-D and centered. Female vocals are like honey. All and all these are a substantial improvement over the stock tubes, and I will begin to recommend them as upgrades. I can’t tell you how much I really appreciate Grant Fidelity lending me these as they really put these amps in a whole new league.”
Here is what reviewer Mark Wheeler said about these globe shaped tubes:
“If your 6SN7′s are on show and there is space for them, there is every reason, sonic and aesthetic, to install the Shuguang Globe 6SN7-SE. In a high resolution system, especially of the low-to-no negative-feedback persuasion, these Shuguang globe 6SN7-SE bottles are the state of the new-wave-of-valve-production (NWOVP). So far Shuguang have not put a foot wrong and we can hope they continue to innovate new versions of those classic valves we all love.” Read the full review here.
Feedback received from customer Vismantas B via email:
“Wow, your 300bz tubes are unreal… Sound is of another world, i use with lm-210ia amplifier .. Definitely i buy one more pair of these tubes:)”