Solid State Power Transformers

Although our blog is quiet for the moment, things never stop in the background. Below is a piece of  very high end solid state power transformer in the making. It is a piece of 350VA Level 3 Super Hi-B double C core power transformer.

Even before the core is inserted, it is already over 2.5KG. The drawn wires are using Teflon insulated OFC too, not just any wires. That is not all! There are more than meets the eyes. We haven't even started the shielding, labeling and finishing process.

This unit is not as high end as the Level 4 we did for Jimmy Auw but is not far away in quality. It cannot fit a standard XL size transformer case and therefore has to be framed. Although so, we still ensure it is not far away in terms of build quality and sound quality!

We will share more pictures when it is completed.

 

Best regards.
18/11/2014

Product Lists  
Level 0

Level 1: link 1, link 2, link 3

Level 2: link 1, link 2, link 3, link 4, link 5, link 6 

Level 3: depends on type, size and complexity. Email us for details.

Iso-trans: link 1, link 2

* Finished amplifiers, DACs, audio gadgets, upgrades and repairs - this is not our core business and we do it out of passion. We do not have fixed models, fixed price and we customize for each individuals. The sky is limit of creativity.  

* Our product lines are always improving and increasing. If you do not see what you want, contact us!  

* Please email for volume discounts, distributor and OEM pricing.

Jimmyauw.com

We'd like to take this opportunity thank Jimmy Auw, a famous Blogger at APAC region, for ordering a pair of Level 4 Super Hi-B double C core power transformers from us.We appreciate his show of confidence on our products as Jimmy only uses the absolute best on his projects. 

For those that are interested in the details, please check out these 3 excellent articles that Jimmy had written at his blog.

• Level 4 Power Transformer part 1 
• Level 4 Power Transformer part 2 
• Level 4 Power Transformer part 3

We will write about this transformers ourselves too but it has to be postponed due to the busy schedule we have over here, busy winding and making more quality products.

Best regards.
18/11/2014

Product Lists  
Level 0

Level 1: link 1, link 2, link 3

Level 2: link 1, link 2, link 3, link 4, link 5, link 6 

Level 3: depends on type, size and complexity. Email us for details.

Iso-trans: link 1, link 2

* Finished amplifiers, DACs, audio gadgets, upgrades and repairs - this is not our core business and we do it out of passion. We do not have fixed models, fixed price and we customize for each individuals. The sky is limit of creativity.  

* Our product lines are always improving and increasing. If you do not see what you want, contact us!  

* Please email for volume discounts, distributor and OEM pricing.

Solid Wood Amplifier Chassis

Now our custom made amplifiers have the option of choosing solid wood amplifier chassis on top of the full aluminum chassis.

Solid wood adds warmth and liveliness to the end results. Standard plates is aluminum. With some additional charges, it can be upgraded to house 3MM - 5MM high purity copper plates. The holes are CNC milled too.

Enjoy the pictures.We simply love the look of these solid wood amplifier chassis. It brings a touch of humanity to the cold machines we always face. It is more expensive but it is well worth the money.

J&K Audio Design
11/8/2014

Product Lists  
Level 0

Level 1: link 1, link 2, link 3

Level 2: link 1, link 2, link 3, link 4, link 5, link 6 

Level 3: depends on type, size and complexity. Email us for details.

Iso-trans: link 1, link 2

* Finished amplifiers, DACs, audio gadgets, upgrades and repairs - this is not our core business and we do it out of passion. We do not have fixed models, fixed price and we customize for each individuals. The sky is limit of creativity.  

* Our product lines are always improving and increasing. If you do not see what you want, contact us!  

* Please email for volume discounts, distributor and OEM pricing.

Shipment Delays

1/2/2015 - Problems resolved. We have changed to a more reliable logistics company and avoided such issue altogether. Buy / use with confidence!

28/10/2014
The reason is being known - the whole 1 particular shipment, a combination of various items from various customers of the forwarder, were on hold for inspection by HK customs. No explanations were released by the authority on why it is being hold for inspection. We can only wait.

For the rest of shipments, they're clear to go and we've received the subsequent shipments that were shipped after that shipment. Therefore, our orders and shipments resume!

For the only customer that is affected by the on hold shipment, we express our deepest apologies for holding your shipment for so long.


27/10/2014
Our raw materials are still being stuck at Hong Kong port. We still have no idea when it could be cleared - 10 days is has been!!! We apologize for the delay caused on the shipments that are affected. We are trying our best to follow up with the forwarder to have our shipment released.

17/10/2014
We're experiencing some shipment delays on some of our transformers deliveries due to raw materials shortage. It does not help either where the newly ordered raw materials are stuck at PRC waiting for papers from Hong Kong to approve them to be transported to their port where there are massive delays due to the recent strike at Hong Kong.

We sincerely apologize for any inconveniences caused on your shipment delays. We are closely following up with the deliveries of the materials to complete your order. If you are experience delays in your order delivery, please bare with us and wait for a while. We expect the issue will be resolved in ~1 week's time.

Thank you for your understanding and patience.

J&K Audio Design Team
28/10/2014

Product Lists  
Level 0

Level 1: link 1, link 2, link 3

Level 2: link 1, link 2, link 3, link 4, link 5, link 6 

Level 3: depends on type, size and complexity. Email us for details.

Iso-trans: link 1, link 2

* Finished amplifiers, DACs, audio gadgets, upgrades and repairs - this is not our core business and we do it out of passion. We do not have fixed models, fixed price and we customize for each individuals. The sky is limit of creativity.  

* Our product lines are always improving and increasing. If you do not see what you want, contact us!  

* Please email for volume discounts, distributor and OEM pricing.

Cobalt Output Transformer

*** 1/1/2016 - Cobalt is out of stock forever unless notified. 

We've sold quite a few pairs of Cobalt output transformers to our worldwide customers. It's time to show some pictures of the double C Cobalt output transformers. There isn't many Cobalt C cores left. So for those that are still considering - you're playing with fire by waiting further.

Do note that we cannot offer Cobalt C as level 3 since they are refurbished cores. Only level 2 is offered. For those that needs perfection, please go for nano-crystalline amorphous C cores transformers. Nano-crystalline amorphous C core uses nano-technology and we are proudly saying that it is the best that we got, so far.

Character of the double C Cobalt output transformers:

* Warm and tubey
* Very dense mids / meaty vocals
* Excellent low bass and mid bass focus
* Highs are adequate but not excessive

We got a shock when we replaced the Z11 level 1 with this double C Cobalt output transformers. The 3W does not sound like 3W anymore. It sounded more like a higher power tube amplifier where the grip on the speaker woofer is so tight and taut that it was misunderstood as a high power amplifier.

This Cobalt OPT is suitable for bright, thin sounding or systems that tilt towards the highs. This Cobalt OPT will balance out the sound. In addition, if you are looking for better mid-low bass response for your system, this is the perfect OPT to get.

For balanced sounding system, we recommend the level 3 Precision Wind Z11 and/or PW nano-crystalline C cores. One can choose the Cobalt OPT too if they like warmer sound.

If your room is having mid-low frequency resonances or acoustical issues, this pair of Cobalt OPT will tell you clearly that you have more work to do.

Cobalt Output Transformers on 6B4G tube amplifier

Cobalt Output Transformer vs Z11 Output Transformer

2 pairs of Cobalt Output Transformers

Cobalt Output Transformers - packed for shipment

J&K Audio Design
21/10/2014

Product Lists  
Level 0

Level 1: link 1, link 2, link 3

Level 2: link 1, link 2, link 3, link 4, link 5, link 6 

Level 3: depends on type, size and complexity. Email us for details.

Iso-trans: link 1, link 2

* Finished amplifiers, DACs, audio gadgets, upgrades and repairs - this is not our core business and we do it out of passion. We do not have fixed models, fixed price and we customize for each individuals. The sky is limit of creativity.  

* Our product lines are always improving and increasing. If you do not see what you want, contact us!  

* Please email for volume discounts, distributor and OEM pricing.

EL34 Amplifier Repair

Another tube amplifier was sent in for repair. You can be the technician and let us know what's wrong with this tube amplifier. We've taken some pictures on the affected areas for your "troubleshooting".

We heard about the low selling price of this unit (so low that we can never achieve with our handmade designs). Since it is other people's product, we will never comment on the quality of this amplifier. You judge it yourself.

Enjoy the pictures of the "intestines".

We

J&K Audio Design
21/10/2014

Product Lists  
Level 0

Level 1: link 1, link 2, link 3

Level 2: link 1, link 2, link 3, link 4, link 5, link 6 

Level 3: depends on type, size and complexity. Email us for details.

Iso-trans: link 1, link 2

* Finished amplifiers, DACs, audio gadgets, upgrades and repairs - this is not our core business and we do it out of passion. We do not have fixed models, fixed price and we customize for each individuals. The sky is limit of creativity.  

* Our product lines are always improving and increasing. If you do not see what you want, contact us!  

* Please email for volume discounts, distributor and OEM pricing.