SW1X Audio Design™ MPA III "Oracle"

Performance Level 3/4/5

45 DHT Mono Power Amplifier

MPA III is a Pure Class A, Zero Negative Feedback, Directly Heated Triode, Fully Valve Rectified, Single Ended, 3 Gain Stage, Interstage Transformer coupled, Mono Power Amplifier.

The Directly Heated 45 Triodes at the output are well known for their superbly refined & magical sound signature.

The 45 valves are de-coupled by output transformers and driven by 6V6 power valves to enhance the refined sound of the 45 triodes with powerful & grungy character of the 6V6.

Combined with the finest Materials & Components, MPA III is extremely refined & musical sounding, especially when combined with high sensitivity speakers

(99dB/W/1m sensitivty is recommended).

SW1X Audio Design™ MPA III Mono Power Amplifier Features:

• Specially Selected and Harmonically Matched Component & Material Quality
• Single Ended, absolutely Zero NFB, Class A, Directly Heated Triode Valve Power Amplifier
• 6V6 Valve Driver/6J5 input Stage driving the 45 DHT Valves
• Interstage Transformer de-coupled, 3 Gain Stage Design
• Hybrid Point 2 Point Hardwiring Technique for the most consistent production results
• Internally wired exclusively with our SW1X Magnum, Genesis and Opus conductors
• SW1X Audio Design™ Custom Designed Copper wound Super HiB DC Core (50 Watt) Signal Output Transformers
• Mono, Directly Heated Double Diode Valve Rectified B+ Power Supply
• Orient grain M6 EI core mains Transformers & Chokes
• Valve rectified Fixed Bias Power Supply

Tube Compliment: 2 x 6J5, 2 x 6V6, 2 x 45, 2 x 5U4G, 2 x 5Y3

MPA III Oracle is avaiable in 4 Versions with following output transformer (OPTs) specifications:

• Standard : SW1X Audio Design™ all Copper wound, orient grain M6 EI Core OPTs
• Special : SW1X Audio Design™ all Copper wound Super HiB DC Core OPTs
• Classic : SW1X Audio Design™ Copper/Silver Windings, Super HiB DC Core OPTs
• Signature : SW1X Audio Design™ Silver/Silver Windings, Super HiB DC Core OPTs

Optional Extras

• Fully Hardwired Tube Output Stage on the Bakelite Board
• Fine Silver Hardwiring of the Bakelite Board