The Personal Audiophile Headphone Package

Sennheiser HD 650 Hi-Fi Stereo Headphones & NVX EX10S In-Ear Monitors w/ NuForce Icon uDAC-3 Amp

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Sennheiser HD 650 (HD650) Audiophile-Grade Hi-Fi Professional Headphones (HD650)

Premium Audiophile-Grade Hi-Fi Professional Stereo Headphones with Clear Open-Air/Open-Back Design
Quantity: 1

Product Features:


  • Cable Length: 9.8 ft. (3 m) detachable single-sided OFC copper cable
  • Contact pressure: 2.5 N
  • Ear Coupling: Around-the-ear
  • Frequency Response (headphones): 10-39,500 Hz
  • Jack Plug: 6.3 mm/3.5 mm Stereo
  • Nominal Impedance: 300 ohm*
    • * Due to the high impedance rating, we at Sonic Electronix emphatically recommend that you purchase a headphone amplifier with these headphones in order to get the best results possible.

  • Sound Pressure Level (SPL): 103 dB (1V RMS)
  • Total Harmonic Distortion (THD): ≤ 0.05%
  • Transducer Principle: Open-aire, dynamic
  • Weight (w/o cable): 9.2 oz. (260 g)

What's in the Box?

Sennheiser HD 650 What's in the Box?
  1. Sennheiser HD 650 Professional Stereo Headphones
  2. Detachable 3 Meter Headphone Cable
  3. 1/4" to 1/8" Adapter (6.35-to-3.5mm)
  4. Protective Storage Case
  5. Owner's Manual

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

NVX EX10S In-Ear Monitors - Earbuds

High-Fidelity In Ear Monitors w/PivoTip Patented Technology, 15 Pairs of Tips including ComfortMax, Tangle-Free Silver Wire, Memory Wire & Ear Hooks
Quantity: 1

General Features:

  • Wired Lightweight (Isolating) Stereo Headphones
  • In-ear design
  • Large 11mm High Fidelity Professional In Ear Monitors with Silver Wire speaker driver produces amazingly clear sound
  • Coated cable for Tangle-free operation
  • Designed with a snug fit for active people
  • Gold-plated, corrosion-resistant stereo jack
  • Includes different size ComfortMax™ tips for added comfort
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product Specifications:

  • Frequency Response: 10-20,000 Hz
  • Sensitivity: 108dB
  • Nominal Impedance: 24 Ohms
  • Cord Length: 55-3/16 in.
  • Cable Type: TPU
  • Plug Size: 1/8" (3.5mm)
  • Plug Construction: 24K gold-plated dual-channel plug
  • Speaker Diameter: 11mm
  • Max Input Power: 50mW
  • Max Output: 108dB


Second Depth
The second depth is used only when the box is slanted or angled. This value is the top measurement and it is measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
Color of handle.

Warranty and Return Policy

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

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Product Summary


Model Number

HD 650_UDAC-3 Black_EX10S



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Internal Product ID


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: The Personal Audiophile Headphone Package

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The Personal Audiophile Headphone Package

Sennheiser HD 650 Hi-Fi Stereo Headphones & NVX EX10S In-Ear Monitors w/ NuForce Icon uDAC-3 Amp


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