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Sennheiser HD 650 vs Sennheiser HD 820 Comparison

Comparison and Difference Between

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Brand and Model Specifications

Information about the brand, model release date.

ModelHD 650HD 820
Release Date???2018
What Hi-Fi? Rating -
Amazon Rating

General Specifications

Type, design and features.

Headphone TypeOver-ear (circumaural)Over-ear (circumaural)
Earcup DesignOpen-backClosed-back
Noise OptionsNoneNone
Transducer TechnologyDynamicDynamic
Cable Length~3 m
~9.84 ft
~387.5 in
~3 m
~9.84 ft
~387.5 in
Detachable CableYesYes
Battery Life--
Battery Quick Charge--
Water ProtectionNoNo
Inputs3.5mm, 6.3 mm6.35 mm, 4.4 mm, XLR-4 (optional)

Technical Specs

Tech specifications of the headphones.

Frequency Response [Hz]10 - 39,50012 - 43800 Hz (-3 dB), 6 - 48000 Hz (-10 dB)
Impedance [Ohms]300300
Maximum Input Power [mW]-0.5
Maximum SPL103103
Driver Diameter4456 mm

Dimensions and Weight

Physical characteristics of the speakers (without stands).

Length~7.7 in
~195.58 mm
~19.56 cm
~7.6 in
~193.04 mm
~19.3 cm
Width~7.1 in
~180.34 mm
~18.03 cm
~7.6 in
~193.04 mm
~19.3 cm
Height~3.94 in
~100.08 mm
~10.01 cm
~4.4 in
~111.76 mm
~11.18 cm
Weight~0.575 lb
~260.82 g
~0.26 kg
~0.8 lb
~362.87 g
~0.36 kg

Packaging Info

Package dimensions and weight.

Shipping Length~12.4 in
~314.96 mm
~31.5 cm
~13.4 in
~340.36 mm
~34.04 cm
Shipping Width~10 in
~254 mm
~25.4 cm
~11.4 in
~193.04 mm
~19.3 cm
Shipping Height~4.4 in
~111.76 mm
~11.18 cm
~5.1 in
~129.54 mm
~12.95 cm
Shipping Weight~1.35 lb
~612.35 g
~0.61 kg
~8.38 lb
~3801.1 g
~3.8 kg

Colors and Accessories

List of available colors and optional accessories.

  • Titanium
  • Black
Replacable EarpadsYesYes
What's in the Box
  • Sennheiser HD 650
  • 3 m cable 3.5 mm
  • 1 adaptor to 1/4″ (6.3 mm)
  • User manual
  • Sennheiser HD 820 headphones
  • connection cable: ¼” (6.35 mm) stereo jack plug, unbalanced
  • 4.4 mm stereo jack plug, balanced
  • USB flash drive (SD-U16L version) with instruction manual (as PDF file)
  • Instruction manual
  • Storage box
  • Microfiber cloth

Price and Warranty

Satisfaction is (not) guaranteed.

Warranty2 Years2 Years
Amazon Price


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