Detail 01
Closed-back dynamic design
Built for studio monitoring with isolation as a central part of the design.
Product detailSKU #1500000380372
NeumannNDH 20 Closed-Back Studio Monitoring Headphones - Black
1/10
Independent shopping perspective
The Korena take
NDH 20 headphones bring closed-back studio monitoring to workspaces where outside noise needs to be held back. Their circumaural design and rated isolation support focused listening for production and content work, including streaming, live production, home sessions, and travel. The foldable format and detachable straight or spiraled cables give you practical options when moving between setups. Connection is through a 3.5 mm TRS plug, with a 6.3 mm adapter provided.
Strong match
Who this is for
- Monitoring production or creator work in noisy rooms, where the rated isolation helps reduce outside sound.
- Moving between home, streaming, live-production, and travel setups with foldable headphones and detachable cables.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Sound isolation: >34 dB above 4 kHz
Targets substantial reduction of outside sound in that frequency range.
Detail 03
Two detachable cables
Choose a 3 m straight cable or a spiraled cable extending from 1.5 to 3 m.
Detail 04
Foldable
The headphones can be folded for transport or storage.
Detail 05
150-ohm nominal impedance
This is the headphone’s stated nominal impedance.
Final check
Know before you order
- 01Confirm your monitoring setup accepts a 3.5 mm TRS connection or the supplied 6.3 mm adapter.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Are the NDH 20 headphones closed-back?
Yes. They use a dynamic closed acoustic principle.
02Do they include different cable styles?
Yes. The listed cables are a 3 m straight cable and a 1.5–3 m spiraled cable.
03Can they be folded?
Yes.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
2 detailsSound
- Frequency Response
- 5–30,000Hz
- Nominal Impedance
- 150 ohms
2 detailsBody & build
- Color
- Black
- Diaphragm Material
- Duofol
4 detailsConnections & power
- Connectivity
- 3.5 mm (1/8 inch) TRS jack plug (straight), adapter for 6.3 mm (1/4 inch)
- Continuous Input Power Handling
- 200 mW
- Max Input Power Handling
- 1,000 mW
- Transport Storage Conditions
- –25° C to +70° C (–13° F to 158° F); <90% RH; non-condensing
7 detailsSize & weight
- Cable Length
- Spiraled 1.5–3 m (5'–10'), Straight 3 m (10')
- Packed Dimensions Hxwxd
- 245 x 255 x 85 mm (9-5/8 inch x 10 inch x 3-3/8 inch)
- Weight Excluding Cable
- 390 g (13-3/4 oz.)
- Cable Weight
- Spiraled 100 g (3.5 oz.), Straight 60 g (2.1 oz.)
- Packed Weight
- 1.22 kg (2 lb. 11 oz.)
- Weight
- 1.22
- Transducer Diameter
- 38 mm (1-1/2 inch)
14 detailsOther
- Wearing Style
- Headband
- Ear Coupling
- Circumaural
- Packed Cube
- 0.005 m³
- Detachable Cable
- Yes
- Acoustic Principle
- Dynamic Closed
- Operating Conditions
- +10° C to +40° C (+50° F to +104° F); <90% RH, non-condensing
- Transducer Protection
- Cloth-covered grille
- Cable Entry
- Single sided, right ear cup
- Foldable
- Yes
- Ear Cup Contact Pressure
- 5.56.8 N
- Sound Isolation
- >34dB (>4kHz)
- Transducer Magnet
- Neodymium
- Replaceable Earpads
- Yes
- Thd At 1khz and 100db SPL
- <0.10%
