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Saturday, May 3, 2014

Amorphous Choke

Special introduction - we have been shipping lots of amorphous C core chokes and got really good feedback on how much improvement they bring to our customers!

Prequel: 
What are the ways of upgrading your existing amplifier, other than playing with interconnects, speaker cables, platform isolation, and various other tweaks?

For DIY-ers, they would say - just change the components! That, to them, would bring more significant changes than playing with external factors. With the same amount of $$$ used on cables or other tweaks, DIY-ers can upgrade their amplifiers substantially, really substantially!

Nowadays, interconnects and power cords cost over USD$1K-5K easily. Imagine what can be done with the same amount of money! One can use all silver internal wiring, all Mundorf Silver/Gold capacitors, branded resistors, BlackGate capacitors, and any audiophile components one can possibly imagine. USD$5K can almost (very close) buy a pure silver output transformer already!

Changing capacitors, resistors, internal wiring, mechanical components and such are pretty common nowadays. Today, I'm going to introduce you another modifications that will bring substantial ROI to your amplifier:
AMORPHOUS CHOKE!
  1. For amplifiers with only RC filter, add an amorphous choke!
    • Produces lower voltage + current ripple, lesser heat (more efficient), lower partnering capacitance needed.
  2. For amplifiers with normal choke, add an amorphous choke! 
    • Better micro-dynamics, micro-details, better filtration, lower noise.
  3. For amplifiers with DC filament supply, add an amorphous choke!
    • Natural slow start, protect your tube filament for longer life.
    • Others are same as above points #1 and #2.
  4. For amplifiers with resistive load, add an amorphous plate/anode choke! 
    • Higher efficiency - lower voltage drop.
    • Better AC reactance (higher load, better linearity!
  5. And many more! 
We have published only 1 size of DCAMC-M01 amorphous double C core choke but we can custom make other sizes too. Do let us know if you need other value chokes.

For USD$109 for an amorphous double C core choke, high ROI tweaks never come cheaper than this. Nowadays, even exotic capacitors can cost many times of such price. Now, start using more chokes in your amplifier design!

Some people talking about of amorphous chokes:

Amorphous Double C Core Choke (nickel steel alloy) – DCAMC-M01
This is made using 4 pieces of C-core per transformer, having 8 pieces altogether for a pair of high end amorphous double C core nickel steel alloy choke. The amorphous C core is very thin and extremely brittle. Please do not drop the transformer to prevent damage. Take precaution when installing the transformer.
  • Available types: air-gapped choke (various sizes within core permit able values)
  • Primary inductance: 8H
  • Primary current: 300mA maximum
  • Primary DCR: 70 Ohm
  • Weight: 1.2KG per piece
  • Size: 60mm x 75mm x 90mm



J&K Audio Design
3 MAY 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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Level 3: depends on type, size and complexity. Email us for details.

Iso-trans: link 1, link 2

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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.

* 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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