At a glance
Sennheiser HD 820 in 5 facts
- Type: Over-ear headphones, wired
- Frequency response: 6 Hz to 48 kHz
- Impedance: 300 Ω
- Sensitivity: 103 dB (dB/V)
- HiFi Specs score: 7.7/10, the average of 9 rated aspects
Verdict
The short version
The Sennheiser HD 820 is exceptionally comfortable and lightweight, with a fantastic sound experience. However, with a significant price tag, the headphones' durability issues involving cable failures make them less appealing for some users. While offering some premium features, these headphones may not be the best choice for value-seeking audiophiles. HiFi Specs score from 9 rated aspects · compared across 20 headphones
Datasheet
The numbers
- Wearing style
- Over-ear
- Design
- Closed-back
- Driver type
- Dynamic
- Driver size
- 56 mm Checked against the maker's own sheet, Sep 2026 Source
- Driver configuration
- dynamic, closed Checked against the maker's own sheet, Sep 2026 Source
- Frequency response
- 6 Hz to 48 kHz Checked against the maker's own sheet, Sep 2026 Source
- Impedance
- 300 Ω
- Sensitivity
- 103 dB (dB/V) Checked against the maker's own sheet, Sep 2026 Source
- Maximum SPL
- 103 dB
- Distortion (THD)
- 0.02 % Checked against the maker's own sheet, Sep 2026 Source
- Power handling
- 500 mW
Connections
Connectivity & battery
Physical
Dimensions, weight, placement
- Replaceable earpads
- Yes
- Width
- 7.6 in 193 mm
- Depth
- 7.6 in 193 mm
- Weight
- 360 g 12.7 oz Checked against the maker's own sheet, Sep 2026 Source
- Colors
- Black
From our review
What we found
Compared across 20 headphones
How it scored
Availability
Where to buy
We don't show live prices. This is our editorial price tier, last checked Mar 28, 2020. As an Amazon Associate, HiFi Specs earns from qualifying purchases. Our scores and reviews are never influenced by affiliate partners.