Sennheiser HD 820507435 · Black · wired, with 6.35 mm and 4.4 mm cables- Nominal impedance
- 300 ohmThis one: 80 ohm
- Nominal sound pressure level
- 103 dB SPL (1 kHz, 1 Vrms)This one: 96 dB
HEADPHONES
Beyerdynamic DT 770 PRO
Classic black/grey · 80 ohm · Beyerdynamic part 474746
- Acoustic design
- Closed-back
- Wearing style
- Over-ear (circumaural), closed-back dynamic headphones
- Nominal impedance
- 80 ohm
The DT 770 PRO (80 ohm) is a closed-back, over-ear headphone with a dynamic driver and bass-reflex system rated 5–35,000 Hz. It offers about 18 dBA of passive noise attenuation, replaceable velour pads and a fixed 3 m cable.
Prices & buying options
As an Amazon Associate I earn from qualifying purchases.
Price alert
Email me when the Beyerdynamic DT 770 PRO gets cheaper on eBay. We check exact-model listings once a day at 12:00 UTC.
THE ACTUAL PRODUCT
Compare with Sennheiser HD 820
Specifications checked 11 Sept 2026Manufacturer specifications, not a hands-on test.
The nearest checked headphones by key specifications, with what differs from the Beyerdynamic DT 770 PRO. The first matches the Compare button above.
Sennheiser HD 820507435 · Black · wired, with 6.35 mm and 4.4 mm cables
Sennheiser HD 25506909 · HD 25 (standard, not HD 25 PLUS or LIGHT) · Black- Wearing style
- On-ear (supra-aural), closed-back wired monitoring headphonesThis one: Over-ear (circumaural), closed-back dynamic headphones
- Nominal impedance
- 70 ohmThis one: 80 ohm
Sennheiser HD 25 LIGHT508664 · HD 25 LIGHT (not HD 25 or HD 25 PLUS) · wired- Wearing style
- On-ear (supra-aural), closed-back wired monitoring headphonesThis one: Over-ear (circumaural), closed-back dynamic headphones
- Nominal impedance
- 70 ohmThis one: 80 ohm
Key strengths
The closed-back design gives about 18 dBA of passive noise attenuation, and its dynamic driver with bass-reflex system is rated 5–35,000 Hz at 80 ohms.
A 3.5 mm plug with a screw-on 6.35 mm adapter covers both common headphone sockets, and the ear and headband pads can be replaced by the owner.
Before you buy
The supplied straight cable is 3 m long.
It weighs 375 g with the cable and is built for a firm professional fit; beyerdynamic's pages give the headband pressure as about 3.5 N in one place and 3.5–5.5 N in another.
Every specification. With its source.
Full specifications
Exact configuration: Classic black/grey · 80 ohm · 474746
23 specifications in 5 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”.
Design & fit
6 items
- Acoustic design
- Closed-backSource
- Wearing style
- Over-ear (circumaural), closed-back dynamic headphonesSource
- Weight including cable
- 375 g
Including cable, per beyerdynamic's product page; its data sheet and manual list 345 g without saying whether the cable is included.
- Earpads
- Grey velour
User-replaceable; the 32-ohm model uses different pads.
- Published headband pressure
- Conflicting sources
beyerdynamic's data sheet lists approx. 3.5 N; its product page lists a firm fit of approx. 3.5–5.5 N. · Nominal clamping force; individual fit and comfort can differ.
- Replaceable components
- User-replaceable ear and headband pads; other repairs through service
The manual explains pad replacement and refers other repairs to beyerdynamic service. The cable is fixed at the earcup.
Connections & battery
5 items
- Wired / wireless connections
- Wired; fixed single-sided 3.5 mm stereo cable with supplied screw-on 6.35 mm adapter
Three-pole stereo connection; audio only.
- Battery life
- Not listed by the manufacturer
The reviewed exact sources do not explicitly establish battery life or that no battery is required for operation. A wired/dynamic audio path, omitted charger or Battery included N is not an explicit operating-power requirement.
- Cable length
- 3 m
Straight cable on the 80-ohm model.
Source - Cable arrangement
- Fixed, single-sided straight cableSource
- Supplied plug and adapter
- 3.5 mm stereo plug; screw-on 6.35 mm adapter
Gold-plated 3.5 mm plug with screw-on adapter; a drawstring bag is also supplied.
Audio specifications
8 items
- Nominal impedance
- 80 ohm
Nominal impedance; check that your audio source can drive this load.
Source - Nominal sound pressure level
- 96 dB
beyerdynamic lists a nominal 96 dB SPL without stating the input reference, so it cannot be compared directly with 1 V rms figures.
- Rated frequency range
- 5–35,000 Hz
beyerdynamic does not state the attenuation threshold for this range.
- Frequency characteristic
- Diffuse-field equalised
- Published distortion limit
- <0.2%
beyerdynamic does not state the test level or frequency for this figure.
- Rated input power limit
- 100 mW
Power handling capacity, not the amplifier power the headphones need.
- Driver construction
- Dynamic transducer with a bass-reflex acoustic system
- Driver diameter
- Not listed by the manufacturer
beyerdynamic does not state the driver diameter for the 80-ohm DT 770 PRO.
Calls & noise control
3 items
- Active noise cancellation
- Not listed by the manufacturer
The reviewed exact sources do not explicitly establish active noise cancellation absence. Preserve separately sourced acoustic design and passive attenuation; they cannot turn omitted ANC into a false capability.
- Microphone
- Not listed by the manufacturer
The reviewed exact sources do not explicitly establish microphone absence. Omission from a package or technical inventory, a stereo audio connector, and a without-remote statement do not establish microphone=false.
- Published passive noise attenuation
- Approx. 18 dBA
Figure for the 80- and 250-ohm models; the 32-ohm model is rated at about 20 dBA. Not active noise cancellation or hearing protection.
Software & controls
1 item
- HEADPHONE LAB software
- Supported through a separate DAW plug-in
Separate plug-in for Windows/macOS audio software (VST3, AU, AAX) with crossfeed and optional room simulation; there is no standalone version. beyerdynamic's individual factory-calibration list names other models, not this DT 770 PRO.
Compare with other headphones
More of the nearest checked headphones by key specifications, for a side-by-side comparison.
Sennheiser ACCENTUM Plus Wireless700176 · Black · model ACPAEBTCompare the two 
Sennheiser HD 280 PRO506845 · HD 280 PRO · wiredCompare the two 
HyperX Cloud III727A8AA · Black · wiredCompare the two 
Sennheiser HD 300 PRO508288 · HD 300 PRO (not HD 300 PROtect) · wiredCompare the two 
Sennheiser HD 300 PROtect506898 · HD 300 PROtect (with ActiveGard) · wiredCompare the two 
Sennheiser MOMENTUM 4 WirelessBlack · model M4AEBTCompare the two 
Sennheiser HD 480 PRO700499 · HD 480 PRO (standard, not PRO Plus) · wiredCompare the two 
Beyerdynamic DT 700 PRO X737704 · 48 ohm · blackCompare the two 