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Friday, April 25, 2014

Nightshade Miniamp - 5687 GZ32

Nightshade Miniamp
5687 + GZ32
750~1000mW
RRP: RM4,500
Front View
Side view
Night view - 5687 is pretty bright!
Dim light view - still very nice!
High quality components!
Layout for shortest signal path and least interconnects!
  • Certified made in Japan Z11 low noise power transformer
  • Certified made in Japan Z11 power chokes x 2
  • Certified made in Japan Z6 output transformer
  • Tube rectified - GZ32
  • Made in UK internal wiring - OFC
  • Audiophile capacitors + resistors
    • Kiwame, Holco, Dale, PRP, hand matched
    • Elna, FT (Germany) capacitors
  • No capacitors in signal path - direct coupled
  • Simples topology - using 5687 as single/output tubes
  • High quality gold plated ceramic tube sockets
  • High quality 3mm turret boards 
  • Solid, full Aluminum chassis, 3-5mm thickness overall
  • Extended chassis support for absolute stability
J&K Audio Design
26 APR 2014

Product Lists  

Level 0

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.

Nickel Ferrite Amorphous Output Transformer

Since I have more time this week, let me share some pictures of the 2 sets of poison that had gone to their new homes. :)

  • 1st pair - 2.5K:8R/16R for 2A3, using L01 (oversided) quad C core, luxury stuff! 
  • 2nd pair - 3.0/3.5K: 8R/16R for 300B, using L01 quad C core, tasteful!
  • Both nickel ferrite amorphous cores!

Depending on the packaging material, a layer of foam added to the binding posts to protect the pins.
Wrapped in foam, protected by another layer of foam before going into the 1st box.

1st box goes into the 2nd box, with lots of foam protection.
Output transformer - pair 1 - Singapore
Output transformer - pair 2 - Singapore again!




J&K Audio Design
26 APR 2014

Product Lists  

Level 0




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.

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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.