Check back regularly or subscribe for updates. Email us at jnkaudiodesign@gmail.com, or fill in the form on the left.

Saturday, May 6, 2017

DAC output transformer


We have got a few requests to custom make DAC for a few customers locally, and have been researching on how to make a better output stage for I/V conversion for DAC chips with current output, especially differential types. 

We've tried many types, such as Op-amp, discrete, passive resistor, and transformer based. So far passive resistor and transformer based are our favorite. Both these give the most natural and organic sound. 

We've done some Googling, and we found that we're not alone! A few very famous modders (Lampizator) and custom builders (Andrea, and etc) have been promoting DAC output stage with resistors and transformers! 

It just so happen that we do have some ready made input transformers made previously for preamp input coupling / isolation use. It can be used perfectly as DAC output stage.

DAC input transformer
  600 Ohm : 600 Ohm DAC output transformer
  • Permalloy EI core, with a small % of Z11 for voicing / sound tuning
  • Core size: EI 35 
  • Size: 66mm x 3mm x 33mm H 
  • Signal level: 3 Vrms @ 20Hz 
    • 20Hz -0.1dB to 100kHz -1dB
  • Usages
    •  DAC output, CD output, Op-amp preamp output, signal coupling (input transformer, output transformer), output inversion use
  • Price: U$150 / pair 
    • Limited quantity only, left over from mass production for a high volume manufacturer
    • 5:1, 10:1 versions may be available, please email 
The simplicity of having transformer as DAC output stage is also something we liked!
This is as simple as it gets, and results are extraordinary!

J&K Audio Design
5/7/2017







Search This Blog

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.

Follow by Email

Follow us using Google+ Badge to get instant updates!

Google+ Followers