Master & Dynamic MW40 (White) + NuForce Icon UDAC-3 (Black)

Foldable Over-Ear Headphones and High-Resolution USB Desktop Headphone Amplifier

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Master & Dynamic MH40 Over-Ear Headphones

Master & Dynamic's MH40 Over Ear Headphones are designed to be modern thinking caps: tools to help focus, inspire, and transport your mind. Designed for decades of use, our headphones are built with only the finest materials and tuned to provide a rich, warm sound. They make an elegant yet everyday addition to your desk, studio or home.

The Best Just Got Better: NuForce UDAC-3

The Master & Dynamic MW40 (White) Offer an Incredible Listening Experience

The NuForce uDAC-3 is the answer to all Audiophile hopes and dreams. If you consider yourself to be an Audiophile, Headphone Guru, Music Enthusiast, or Audio Guru, then this is the item for you. Designed as an upgraded replacement to the best selling predecessor uDAC-2, the NuForce uDAC-3 will blow your mind. This 3rd generation uDAC series amplifier has no capacitors within the audio signal path, eliminating any potential distortion. The NuForce uDAC-3 delivers truly superior sound via a high-performance, 24bit/96kHz USB Digital Audio Converter (DAC) and allows you to connect digital audio from your computer to your home stereo, desktop sound system, powered speakers or headphones. Engineered to maximize the performance of any headphone 16 to 300 Ohm, you can now efficiently power your favorite Beyerdynamic, Sennheiser, Grado, Westone, Shure, Audio Technica, Denon, Ultimate Ears, AKG or Sony headphones, and hear what they are truly made of. The NuForce uDAC 3 is guaranteed to impress, and will impress anyone who has the chance to test one for themselves. Built with a compact profile, and an affordable price, everyone deserves that chance!

Master & Dynamic MW40 (White)

Foldable Over-Ear Headphones
Quantity: 1

General Features:

  • Foldable Over-Ear Headphones
  • 45mm Neodymium Drivers
  • Frequency Response: 5 Hz to 25 kHz
  • Tangle-Resistant Woven Cable
  • Oxygen-Free Copper Wire
  • Inline Remote
  • Separate Mic for Clarity and Low Noise
  • Integrated Mute Button on Earcup
  • Machined Anodized Aluminum Enclosure
  • Canvas Headphone Case Included
  • Includes Leather Cable Storage Box
  • Also found as: MH40S5
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty

NuForce Icon uDAC-3 (Black)

High-Resolution USB Desktop Headphone Amplifier and Digital Audio Converter (DAC)
Quantity: 1

Product Features:

  • Desktop USB DAC
  • Engineered for use with home PC Computers, Laptops, Notebooks, Tablets, MAC or Macbook, Home Stereo System, or many more for Premium Audiophile Grade Sound Performance
  • High-performance 24-bit Resolution and 96kHz Sample Rate for immaculate reproduction
  • USB-Powered, no external power supply required
  • Direct-Stream Digital (DSD) Decoding capability
  • TOCOS Volume Control for precise channel tracking
  • Headphone Amp Circuitry powers headphones with impedance ratings from 16 to 300 Ohms, producing 80mW x 2 channels at 16 Ohms
  • Includes analog RCA, digital coaxial, and 3.5mm outputs for a Variety of Applications
  • Double Jitter-Reduction Mechanism at data level and oversampling filter stages for the best sound quality
  • 2V Analog output
  • Coaxial S/PDIF output
  • No Capacitors In Any of the Signal Paths to reduce and prevent signal tarnish
  • Color: Black
  • Manufacturer Part Number: NF-UDAC3-BLK
  • Also Found As: NuForce U-DAC 3 Black, U-DAC3, NF-UDAC3-BLACK, uDAC-3 BLK, NF-ICON-UDAC3-BLK
  • Also available in Silver (NF-UDAC3-SVR) , and Red (NF-UDAC3-RED

Technical Specifications:

  • Input: USB Digital (1.1 and 2.0 compatible)
  • Native Bit Rate: 32, 44.1, 48, 88.2, 96 kHz, 24-bit
  • Output: Analog RCA output = 2Vrms
  • Dynamic Range: 90 dB
  • Signal-to-Noise Ratio (SNR): 98 dB
  • Total Harmonic Distortion (THD): 0.05%
  • Digital Output: coaxial RCA 75-ohms
  • 3.5mm Output Power: 80mW x 2 @ 16-Ohm
  • Frequency Response: 20 - 20,000 Hz
  • USB Bus Powered, 80 mA/5V
  • Maximum Power Consumption: 500mW
  • Dimensions: 2-11/16"W x 1-1/2"D x 53/64"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

What's in the Box?

  • NuForce uDAC-3 (Black)
  • USB Cable (3.3 Feet)
  • Owners Manual
  • Warranty Information

General Features

Connector Type
The type of connection the headphones use to connect to receive the audio signal from a music source. Traditional headphones use an analog 3.5mm headphone jack. Newer technology has allowed digital signals to be sent directly to the headphone using an Apple Lightning or USB-C cable.

Audio Features

Driver Type

The physical design of the driver in the headphones.

Balanced Armature:
A balanced armature driver uses a coil wrapped around an armature which is held in between two magnets until it is stimulated by an electrical current. When stimulated, this armature is magnetized which causes it to rotate one way or the other around a pivot point which moves the diaphragm to create sound. Balanced armature driver headphones are generally earbuds and can have multiple drivers in each earbud.

Dynamic drivers are the most common driver type. They feature a permanent magnet, usually neodymium, a voice coil and a conical diaphragm to drive your music. A dynamic headphone driver looks pretty much identical to any typical home theater speaker.

Electrostatic drivers are made up of an extremely thin membrane, usually a coated PET film, stretched between two metal plates. An electrical signal is applied to the metal plates to create an electrical field which, depending on its polarity, draws the speaker diaphragm toward one of the plates which forces air through the perforations in the diaphragm which generates the sound wave.

Planar Magnetic:
A planar magnetic driver is made up of a large membrane suspended between two sets of oppositely aligned magnets. An electric charge is applied to the membrane to induce movement and produce sound waves.

Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
5 - 25,000 Hz
Audiophile headphones represent some of the finest headphones available. Audiophile headphones produce genuinely outstanding sound quality as well as extraordinary build quality, components and comfort. They are truly the finest headphones available.
Built-in Amplifier
This refers to whether the headphones have an amplifier built-in.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Master & Dynamic MW40 (White) + NuForce Icon UDAC-3 (Black)

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Master & Dynamic MW40 (White) + NuForce Icon UDAC-3 (Black)

Foldable Over-Ear Headphones and High-Resolution USB Desktop Headphone Amplifier


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