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Thursday, December 10, 2015

Tube DAC

We've built an interesting DAC for a local customer - a dual topology tube DAC! It has switchable DACs with a NOS (Non Over Sampling) DAC and a high resolution modern oversampling DAC. 

Features
Switchable dual DAC 
Driver Tube: NOS Mullard EL821 Triode Connected
Rectifier Tube: GEC 5Z4G 
DAC1: NOS TDA1545A quad paralled
DAC2: ESS ES9023
Transformers
* Level 3 Nanocrystalling Double C Preamp OPT 10K: 300 Ohm
* Level 2 EI Z11 power transformers and chokes
Solid full ALU chassis with CNC cut ventilation holes and tube holes
5MM FR4 PCBA for tube mounting
Special vibration and EMI/RFI tuning from 3io's 
Ultra low noise regulators array for DAC

Sound - dynamic, extended on both ends, excellent PRAT, warm and thick vocals.


Time for some pictures of this very unique and high end tube DAC. Apologies for the low lighting. Our semi-pro camera man still needs time to get used to his new full frame Canon SLR.





Some internal pictures. This guy is whopping 20KG!






Full system view - Acapella Violon4, Wavac PRT1 preamp, J&K EL84 PP amplifier, REL reference subwoofers (x3), Wavac 805 mono-block power amps, Wavac 300B power amp + full set of Wavac regulators, and etc.


J&K Audio Design
12/11/2015

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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.

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