SW1X DAC III

TDA1541 NOS R2R DAC with Active I/V 6N6P Valve Output Stage

Re-experience the legendary classic Valve Rectified TDA1541 NOS R2R DAC at its full glory, re-incarnated by SW1X Audio Design.

SW1X DAC III introduces TDA1541 DAC and 6N6P Double Triode Valve Output Stage, adding additional level of organic & analogue envelope to the sound over DAC II.  The sonic character becomes indistinguishable from analogue playback when combined with analogue sounding digital transport. Available in either single-ended (SE) or in Balanced versions. The Balanced versions of the DAC III is equipped with signal output transformers (OTPs) providing true balanced and single ended ouputs.

For maximum synergy, musical & analogue character, all SE & Balanced versions were designed to be paired with our VDT Digital Source products.

SW1X Audio Design™ DAC III Features:

• Pure NOS (Non oversampling – zero digital domain filtering) R2R DAC Design
• Selected and Harmonically Matched Component & Material Quality
• Highest Grade TDA1541 DAC
• Anode Follower, Zero Negative Feedback, Single Ended, Class A, RC (resistive loaded, capacitive de-coupled) Valve Amplification Topology
• 6N6P Double Triode Valve Output Stage
• 6X5 Indirectly Heated or Directly Heated 5Y3 (SE version) 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
• 3 (4 x on USB version) x EI core Mains Transformers & 2 x Chokes

Specially Selected and Harmonically Matched Component & Material Quality

• M6 grain orient EI core Mains Transformers & Chokes
• Black Gate de-coupling Capacitors for TDA1541 DAC
• AN Copper Foil Signal Output de-coupling Capacitors
• Internally wired exclusively with our SW1X Magnum, Genesis and Opus conductors of various geometry (single strand or Litz)
• AB 2W non-magnetic Carbon film Resistors (SE version)

Tube Compliment

1 x 5Y3

1 x 6N6P

1 x E180F

1 x EAA91

Read more about DACs made by SW1X and what makes R2R DAC designs better than Delta Sigma