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Varenummer: DACIIISPECIAL Kategorier: ,
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SW1X Audio Design™ DAC III Special Performance Level 3 D to A Converter


The Special version is a further refinement of the SW1X DAC III STD and a smaller brother to the DHT powered DAC IV. The main improvement over the STD version is in larger spatial presentation, more natural harmonics and dynamic realism, which is provided by even more powerful Super HiB C-core choke loaded EL84/EL86 power pentode (triode connected) tube output stage driven by the energetic 6N1P double triode.

Super HiB transformer de-coupled Balanced version and the limited production Signature version of the DAC III is available on request.



SW1X Audio Design™ DAC III Special Features:

  • NOS (Non Oversampling –Zero Digital Domain Filtering) Design
  • Specially Selected and Harmonically Matched Component & Material Quality
  • Single Ended, Inductively (choke) Loaded, Capacitor de-coupled Power Valve Ouput Stage Topology
  • Super HiB Choke loaded 2 x EL86 power pentode (triode connected), 1 x double triode 6N1P driver, zero NFB, SE Valve Output Stage
  • 5U4GYB/5R4GYB or 5Y3 Directly Heated Valve rectified CLC (choke filtered) B+ Power Supply
  • Passive I/V conversion via a specially selected resistor with the shortest signal path directly connected to the tube grid
  • Dynamic Element Matching (DEM) of the TDA1541 powered by an asynchronous E180F Valve Clock
  • Valve Clock powered by EAA91 Valve Rectified & Choke Filtered Power Supply
  • Discrete Transistor, Shunt Voltage Regulated Low Voltage Power Supplies
  • Circuit is wired with of a specially selected copper (single strand or Litz)
  • M6 orient grain EI core mains transformers & chokes (HiB double C-core available as an option)
  • Digital Input supports up to 24Bit/96kHz S/PDIF Signal Input


Optional Extras:

a) Black Gate capacitors around TDA1541 and/or in selected places of power supplies

b) Audio Note 2W silver, non-magnetic, tantalum resistors in the I/V conversion

c) Audio Note 2W copper, non- magnetic, tantalum film resistors on plates, cathodes, power supplies and I/V conversion

d) Audio Note Silver Foil capacitors in inter-stage and ouput stage signal decoupling option

e) Additional choke filtering on the DEM clock tube PSU for the TDA1541

f) Circuit is normally wired with specially selected copper but can be ordered with fine silver wiring (including power inlet)

g) Super HiB double C-Core filtering chokes in the power supplies

h) 2 x HiB double C-Core mains transformers for the TDA1541 and EL86/6N6P tube tube output stage

i) TDA1541A S1 and S2 (single and double crown) versions are available on request



Note: Due to SW1X Audio Design’s ongoing research and development process, specifications are subject to change without notice.


DAC III is availble with C- and EI- cored Super HiB signal and power transformers (or chokes) as an optional extra











Dimensions: Height (mm) 150 x Width (mm) 450 x Depth (mm) 410

Weight (kg): 16

Max Power Consumption (W): 23

Output Noise, Unweighted (mVrms): < 0.5

Output Impedance (Ohms): <200

Tube Compliment:  2 x EL86, 1 x 6N1P, 1 x 5R4/GZ32, 1 x E180F, 1 x EAA91


Reviews and customer’s feedback can be found here