SW1X Audio Design™ AMP IV "Aura"

Performance Level 3/4/5

2A3 DHT Integrated Amplifier

AMP IV is a Pure Class A Amplifier coupled with a High Quality Pre-amplifier using our in house designed and in house made stepped attenuator volume control.

The Directly Heated 2A3 Triodes at the output are well known for their linear & full bodied sound signature. They are driven by 6SN7 valves to produce the classic energetic & emotionally involving sound.

AMP IV is not only extremely musical but also powerful and in the same time refined sounding Integrated Amplifier.

SW1X Audio Design™ AMP IV Integrated Amplifier Features:

• Specially Selected and Harmonically Matched Component & Material Quality
• Pure Class A, Single Ended, Directly Heated Triode, absolutely Zero NFB Valve Amplifier
• 2 x 6SN7 Triode driver/input Stage Valves driving the 2 x 2A3 DHT Valves
• 3 Amplification 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
• Quasi Mono, Directly Heated Double Diode Valve Rectified B+ Power Supply
• SW1X 24 Step Discrete Attentuator Volume Control
• Orient grain M6 EI core mains Transformers & Chokes
• Valve rectified Fixed Bias Power Supply

Tube Compliment: 2 x 6SN7, 2 x 2A3, 1 x 5U4GB, 1 x 5Y3

AMP IV is avaiable in 4 Versions with either Satin Silver or Matte Black front Panels with a 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:

• Silver wound SW1X Audio Design™ Custom Designed Super HiB or Ultra HiB DC core Signal Output Transformers
• Fully Hardwired Tube Output Stage on the Bakelite Board
• Fine Silver wiring on the Input, Bakelite Board and Output
• Black Gate VK capacitors in the B+ power supply
• AN 2W non-magnetic Niobium resistors on a Hardwired Bakelite Board
• Super HiB double C-Core mains transformers
• Inter-stage signal decoupling capacitors: 1. Copper Foil in Oil or 2. Silver Foil capacitors
• AN 2W silver, non-magnetic, Tantalum resistors