Customer feedback on GF Premium Tubes:

Here is an email feedback we received from customer Thomas L about his personal experience of buying from Chinese vendors vs. Grant Fidelity:

“Hi Rachel,

  Just thought I’d give you a little feedback with my recent purchase.  

  Your tubes are expensive (adding in all the fees and shipping).  I think you would agree as well, although you may argue nothing is cheap with this Audiophile hobby, which I would agree as well. With my recent purchases, I think it was pushing around $2000 CAD.  This was for 5 845s, and two pairs of 300Bs.  Honestly, I had been looking at the GF tubes for a while now, never had the $$ or the guts to pull the trigger as the number of tubes that I need for my amps in total would put a dent in my bank account.  With the boxing day / black friday sales, I figured it would be a good time or timing to replace my existing OEM tubes.  So …. Here’s what I have learned.

  Prior to this purchase, I had been buying tubes online from China or locally from a friend.  But what did I get exactly?
  *  Noisy tubes.  

  *  Tubes that broke after a listening session.  

  *  Tubes that looked like they were shorting out (they were supposed to be new!!!!).

  Then I had to contact my friend or vendor in China to have the tube(s) replaced.  And on one occasion I had to pay duty for the replacement tube.  

  So, after I plugged the GF tubes in my amp(s), I had a moment where I was thinking, “this is what I get for paying a premium price.”  

  The tubes are quiet, like very quiet.  The difference between OEM vs the GF tube is obvious.  I used to think that my amps were noisy, but only after I plugged in the GF tubes, I realized a good amount of noise was actually from the tubes itself. 

  Balanced sound stage.  I am referring to the left and right channels.  With that comes a solid image.  You have vocals that comes directly to you.  I’m particularly picky when it comes to this as I hate to hear vocal lop-sided.

  Last but not least, sound quality.  Smooth, very Smooth but not losing both top and bottom end.

  Overall was it worth it?  The decision is leaning to a Yes.  With the tube and sound quality accounted for.  And most importantly, this is a case where I plugin, dial in and enjoy the music without having to worry too much about reliability (knock on wood, so far so good).  

  Lastly, great service.  Thanks again for the quality products and super fast shipping.

  (Now, I will have to save up again for the next tube upgrades).

Positive Feedback review: Linlai™ Global E-300B vs. Psvane ACME300B

Review Juan C. Ayllon spent time with both tubes on his ultra high end Lampizator Big 7 Mk1 Digital to Analog Converter for ‘An Aural Indulgence


  • “If vacuum tubes were wine, the Linlai would be a sophisticated French red Bordeaux blend from the Left Bank of the river Garrone in Bordeaux, France, while the ACME would be a top shelf Cabernet Sauvignon from California’s Napa Valley served in posh steakhouses. 
  • Don’t get me wrong; both the Linlai E-300B and the Psvane ACME 300B render rich, well-balanced presentations, and if I were not making conscious A to B comparisons, it would be easy to miss the differences. And, either vacuum tube will deliver luxuriant listening pleasures worthy of the most discriminating audiophile, enhancing high end tube gear performance and pairing them nicely with highly resolving components like the Pass Labs XP-12 preamplifier or X250.8 amplifier for a spectacular aural finish…”

Read the FULL REVIEW here.

“Your (Treasure) 300B-Z is unreal”

SG-2A3-6Feedback 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:)”