SW1X Audio Design™ DAC III STD Performance Level 3 D to A Converter


Re-experience the legendary classic TDA1541 DAC powered by valves at its full glory, re-incarnated by SW1X Audio Design™.

DAC III builds upon the refinement of the SW1X DAC II and adds additional level of organic & analogue envelope to the sound.  The sonic character becomes indistinguishable from analogue playback when combined with analogue sounding digital transport. Signature version of the DAC III is available on custom built to order basis only.

Order Now


SW1X Audio Design™ DAC III Features:

  • Pure NOS (Non oversampling – zero digital domain filtering) Design
  • Selected and Harmonically Matched Component & Material Quality
  • Based on 1x TDA1541 – the most analogue sounding R2R DAC ever made
  • STD, Anode Follower, Zero Negative Feedback, Single Ended, Class A, RC (resistive loaded, capacitive de-coupled) Valve Amplification Topology
  • 6N6P or 5687 Double Triode Driver Valve Output Stage
  • 6X5 Indirectly Heated or Directly Heated 5Y3 (5R4 as an option) Valve rectified CLC (choke filtered) Power Supply
  • Dynamic Element Matching (DEM) of the TDA1541 is powered by an asynchronous E180F Valve Clock with EAA91 Valve rectified Power Supply
  • Active I/V conversion via a single specially selected transistor (with less than 10 Ohm input impedance) with the shortest signal path directly connected to the tube grid
  • Circuit is wired with of a specially selected copper (single strand or Litz)
  • Discrete Transistor Shunt Voltage Regulated Power Supplies for the TDA1541, SPDIF receiver and active I/V conversion
  • Supports up to 24Bit/96kHz (optional up to 48 kHz only) digital coaxial S/PDIF signal input (USB input is optional, see in options below)
  • 3 x EI core Mains Transformers & Chokes

Tube Compliment: 1 x 6X5 (5Y3 or 5R4 as an option), 1 x 6N6P (or 5687/E182CC as an option), 1 x EC86, 1 x EAA91


Optional Extras:

  • AN Copper foil, mylar in Oil signal output decoupling capacitors
  • Black Gate capacitors around TDA1541
  • AN 2W copper, non- magnetic, tantalum film resistors on plates of the output tube
  • 5687/E182CC or 6N6P Premium 6N6P from the 60s or Premium vintage NOS black plate Tung Sol 5687/E182CC output tube
  • Directly heated vintage 5R4 type of tube (from the 60s) in the PSU
  • Additional choke filtering on the DEM clock tube PSU for the TDA1541
  • USB input with a tube master clock, powered by an separate transformer
  • 2 x HiB double C-Core mains transformers for the TDA1541 and DHT/DHD power supplies






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


Dimensions STD version: Height (mm) 150 x Width (mm) 340 x Depth (mm) 400

Dimensions Custom with USB version: Height (mm) 150 x Width (mm) 440 x Depth (mm) 400

Weight (kg) STD version: 13.6

Weight (kg) Custom with USB version: 15.6

Max Power Consumption (W): 33

Output Noise, Unweighted (mVrms): < 0.5

Output Impedance (kOhms): <1



DACs made by SW1X: What is different about them?


Reviews and customer’s feedback can be found here


SW1X Audio Design Product Price List



We do not recommend purchasing a key system component without first auditioning it carefully, which is why we have demonstration rooms and a 14 day trial period policy.
However in certain situations it can be difficult for people to get to our showroom and for those instances we can offer our mail order service.


Order Now

Translate »