SW1X Audio Design™ DAC V Performance Level 5 D to A Converter


DAC V is our top of the line, super DAC. It is the signal output transformer de-coupled version of the DAC III, powered by Directly Heated Triodes and Directly Heated Diodes. Components & materials inside the DAC V are the finest availble and are harmonically matched to the highest possible degree.

Signal Output Transformer de-coupling of the Valve Output Stage is the closest approximation to a truely “invisibly” sounding DAC.

The major benefits of having a signal output transformer (L- inductive loading & de-coupling) over a resistor-capacitor (RC) signal de-coupling is as following:

  1. Signal output transformers can become invisible components only if the finest core materials, wires and optimum winding techniques are employed – the transparency as well as linearity are improved relative to capacitors, which all tend to mask low level nuances
  1. The dynamics are stepped up because the tube is inductively loaded (one gets all the gain of a tube but at lower DCR) unlike with a high value resistor (which lessens dynamics)
  1. The output impedance of a tube output stage is lowered (stepped down, squared root of the ratio), which gives a better drive to the consecutive amplification stage. This in turn provides a more convincing dynamic realism


Available in different versions: Special and the limited Signature version with different signal output transformer options (Permalloy or Super HiB) and wiring.

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SW1X Audio Design™ DAC V Features:

  • Non-oversampling – Zero Digital Filtering R2R DAC Design
  • Specially Selected and Harmonically Matched Component & Material Quality
  • Zero NFB, Directly Heated Power Triode Valve Output Stage, C-core Signal Output Transformer De-coupled
  • Discrete Transistor Shunt Voltage Regulated Low Volatge Power Supplies
  • Dynamic Element Matching (DEM) powered by Valves with Valve rectified, Choke filtered B+ Power Supply
  • Quasi Mono, Directly Heated Double Diode Valve Rectified CLCx2LC (3 x choke filtered) B+ Power Supply
  • Supports up to 24Bit/96kHz (optional up to 48 kHz Purist Red Book playback only) digital coaxial S/PDIF signal input
  • Orient grain M6 EI core mains Transformers & Chokes (Super HiB DC core is optional)
  • Black Gate capacitors around TDA1541


Optional Extras

  • XLR AES/EBU or I2S input
  • Fine silver wiring in selected places
  • TDA1541R Selected or optional TDA1541A S1 or S2 Selected Crown version
  • EI core (standard) or Super HiB DC-core (optional) mains transformers
  • DHT output stage with a choice of transformer core (SHiB and 80% Nickel Permalloy 2 x C cores)
  • Inter-stage signal decoupling capacitors: 1. Copper Foil in Oil or 2. Silver Foil capacitors
  • Black Gate capacitors in the power supplies
  • Super HiB double C-Core mains transformers for the digital and DHT/DHD power supplies
  • AN 2W silver, non-magnetic, tantalum resistors
  • Fine silver windings on primaries or/and secondaries of the signal output transformers is optional


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


Dimensions: Height (mm) 250 x Width (mm) 440 x Depth (mm) 400

Weight (kg): 23

Max Power Consumption (W): 80

Output Noise, Unweighted (mVrms): < 0.5

Output Impedance (Ohms): <10

Tube Compliment:  2 x 6SL9, 2 x 45 or 2 x (71A/45/AD1/300B) , 1 x 5Z3/80,1 x E180F, 1 x EAA91


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 flexible home loan 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.


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