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Tuesday, October 21, 2014

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

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* 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.  
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Product Lists

Product Lists

Level 0: link 1

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

Level 2: link 1, link 2, link 3, link 4, link 5, link 6, link 7, Link 8, link 9

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

Iso-trans: link 1, link 2

Power-trans: link 1

* 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.

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