M-AUDIO HDH40 Closed-Back Over-Ear Headphones
- Closed-back, over-ear studio design
- 32 ohm impedance, 95 dB sensitivity
- 2.7 m cable, 1/8 jack with 1/4 adapter
- Sound isolation for monitoring
- Flexible headband
- 1 year manufacturer warranty
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
Closed-back over-ear studio headphones with a long cable and sound isolation, aimed at monitoring, podcasting and recording. The listing gives only one end of the frequency range.
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ASIN: B09S3VWMX6Model: HDH40Category: Headphones
Overview
Closed-back cups wrap dynamic drivers on a flexible headband, so recorded sound stays in the ears and outside noise is reduced. A long cable ends in a small jack, with a larger adapter in the box.
The reason to look at it is the sealed design for tracking, where leakage into a mic would be a problem. The limitation is thin detail, with no cup size, no case and an incomplete frequency entry.
Who it's for
Home recording artists, podcasters and streamers who monitor next to a microphone will use the isolation. Buyers who want wireless freedom, or a very open soundstage, should choose another design.
Pros and cons
- Closed-back sound isolation
- Works with many devices
- Frequency response entry is incomplete
- Not water resistant
- Wireless entry contradicts the wired design
Performance notes
The sealed cups block outside noise and stop sound leaking out, which suits tracking. Dynamic drivers convert the signal at a moderate impedance, so a laptop or an interface can drive them. Ear cushions set the seal and the comfort.
Specifications
| Brand | M-AUDIO |
|---|---|
| Model | HDH40 |
| Dimensions & fit | |
| Weight | 9.6 ounces |
| Capacity & performance | |
| Noise Control | Sound isolation |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Compatible Devices | Music production equipment, laptops, desktops, gaming consoles, tablets, phones, smart speakers |
| Connectivity Technology | Wired |
| Warranty & support | |
| Warranty Description | 1 year manufacturer |
| Other details | |
| Audio Driver Type | Dynamic |
| Headphone Jack | 3.5 mm (1/8 inch) jack, 1/4 inch adapter included |
| Impedance | 32 ohm |
| Cable Features | 2.7 m, retractable |
| Earpiece Shape | Closed-back, over-ear |
| Frequency Response | Listed as 28 KHz |
| Sensitivity | 95 dB |
Closest rivals on specs
Frequently asked questions
How heavy are the M-Audio HDH40 headphones?
The listing gives 9.6 ounces, with a 2.7 m cable. It gives no cup dimensions.
Are the M-Audio HDH40 headphones open-back or closed-back?
Closed-back, with sound isolation.
Do the M-Audio HDH40 headphones include a 1/4 inch adapter?
Yes. The listing says a 1/8 jack with a 1/4 adapter is included.
Are the M-Audio HDH40 headphones wireless?
No. They are wired, even though one entry says wireless.