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Saturday, June 4, 2016

J&K Super Hi B Power Transformer User Review

First of all, we would like to thank Kris Horpaopan for his true blue review on our Super Hi-B power transformers that he sourced for his friend in a very high end setup. He has posted his very well written review on his Facebook page, and we have the privilege and pleasure to share it with you here, with his permission of course. 

Here goes J&K Super Hi B Power Transformer User Review, quote:

Review Super Hi B core (SHiB)
Introduction...
We know J&K for a while(without knowing he is my FB friend for years) and we read a lot of technical stuff on his blog. We quite sure that this guy know what he is doing. Also, ISO Tango close its factory make us gonna find new Transformer maker for our new project..
So, We decide to order J&K OPT LV3 for 212E SE o compare its quality first.the result is, it is very close to Tango X5S.... So we decide to order 212PPP from him...and it still sit on our table....


Why? Because we still undecide how we gonna do with PT. Many debates fly around and we resolve that we gonna order J&K super Hi B power trans to compare the EI old one.
To be continue.. food is coming.


To compare how better than the old one.. We order PT for 212SE that we are currently running EI core to evaluate its performance. Then, the Super Hi B Power transformer come in to our hand... we let it sit and sit and sit to make sure it mature with Thailand sunlight and temperature....nah, that's an excuse..Our Ace, Pok Napat busy with his study so everything is going slowly as it should be for DIYer who are very busy with his career. a las.... the waiting is over, we got a chance to try our new heavy toy, which act as paper weight for months...

The SHiB Transformer itself is smaller than our EI one. Due to J&K would like an accurate Voltage and Current rating that our 212SE use now, so it made to be optimized with the actual use and the the size is smaller that Our EI with design with 2X (or 4X) current ratings. Yep, We worry about the Heat and rating in this point... will it better than EI one??? From a look, we are not so sure.......

After The Surgeon Pok Napat perform his cut and connect... not world class level, we are just non commercial DIY.... we get a wiring out from our chassis to connect new Super HiB PT outside... It is not wise to cut thick stainless steel by ourselves with the small driller. Sakda Thanitthanaphat did a great job with is CNC machine when we do this plate cutting.

Time has come for first power on..... We need a sheep to test if PT works... we cannot find our PSVANE 212 and STC 4212 is hiding in the deepest of our den... so, we decide to use 212D as our decoy if something goes wrong before we put our main hero 212E. The power has turn on, filament lit. After 1 minute time delay, sound has come out from new D1.1 speaker..we decide to turn it off and put our 212E in.

Note, I think 212D and 212E has different bias point... you need to readjust the bias if you interchange these tubes.


As you can see in my live in the post Below, we quite be attracted with the new PT. we didn't feel any lacking of the reserved power, in contrast, we feel the background noise is lower...details, dynamic, airy, timbres..everything has coming out. Louis Armstrong loud his triumph trumpet livelier than the old one, Ella Fitzgerald voice has more harmony and clearer. Clair Marlo music perform better timing accuracy and layer are much more distinctive.... We are closer to Kondo Gakuoh 1 more step.....

In sum, you SHALL NOT overlook the PT.. even you order 4X current rating or whatsoever.. Material and technique does different... If your PT is an ordinary one and your OPT is quite good already... Change PT now. it is much more improvement than seeking better OPT (which is may not better). Of course.... We will replace our PT Drive section too.. Stay tuned......

I know I still owing some review to some people, such as Vox Olympion review to Matej Isak... I am sorry about that but the Vox is not moving in to the room yet.... In fact.. The Room has not been done.... please blame Thanaphol Pooleam for his slow progress in construction..... (/Run Aways).... just kidding.. the room has not been finished yet... that's all.

J&K Power Transformer Review Part 1
J&K Power Transformer Review Part 1
J&K Power Transformer Review Part 1
High End 212 SET Tube Amplifier
Time has come for first power on..... We need a sheep to test if PT works... we cannot find our PSVANE 212 and STC 4212 is hiding in the deepest of our den... so, we decide to use 212D as our decoy if something goes wrong before we put our main hero 212E. The power has turn on, filament lit. After 1 minute time delay, sound has come out from new D1.1 speaker..we decide to turn it off and put our 212E in. Note, I think 212D and 212E has different bias point... you need to readjust the bias if you interchange these tubes.
After The Surgeon Pok Napat perform his cut and connect... not world class level, we are just non commercial DIY.... we get a wiring out from our chassis to connect new Super HiB PT outside... It is not wise to cut thick stainless steel by ourselves with the small driller. Sakda Thanitthanaphat did a great job with is CNC machine when we do this plate cutting.

End quote / of review.

If you plan to raise your creations a few leagues above, you know what to use for your power transformers. 

J&K Audio Design
6/4/2016

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