Sennheiser HD 25: The DJ Headphones with Emphasized Bass and Treble
· re:union Radio editorial · 2 min read
The Sennheiser HD 25 is a closed-back DJ headphone with 70 Ohm impedance and emphasized bass and treble.
The Sennheiser HD 25 is a closed-back, dynamic on-ear headphone that has been a reliable workhorse in DJ booths for years. Instead of chasing trends, it focuses on a minimalist concept: a robust housing, low weight, and a sound profile tailored for loud environments.
At a glance
- Closed-back, dynamic on-ear headphones
- Impedance 70 Ohm, max. sound pressure level 120 dB
- Frequency response 16 – 22,000 Hz
- Weight without cable: 140 g
A Sound Profile for the Club
Specialist retailer Thomann describes the HD 25's frequency response as follows: it has “reduced high mids, so it doesn't sound unpleasantly 'harsh'”, along with “overemphasized bass in the 100 Hz range, so you can definitely always hear the beat and bass well”. In the highs, it is “slightly boosted in the 8 kHz range, so you can hear transients like hi-hats very well”. This precise tuning explains why the headphones are so widely used for mixing in loud conditions: the beat and snare remain audible even against room volume, without the highs getting lost in the sound mush.
Lightweight, Closed-Back, Built for Continuous Use
At 140 grams without the cable, the HD 25 is one of the lighter models in its class. Thomann categorizes it accordingly: it is aimed at anyone who needs “reliably good sound on the go and in live conditions” – “and for several years”. The closed-back housing also provides passive shielding against ambient noise, which makes all the difference when cueing up the next track in a loud club.
Technical Specifications
| Design | Closed-back, On-Ear, dynamic |
|---|---|
| Impedance | 70 Ohm |
| Max. Sound Pressure Level | 120 dB (1 kHz, 1 Vrms) |
| Frequency Response | 16 – 22,000 Hz |
| Weight | 140 g (without cable) |
“The HD-25 has reduced high mids, so it doesn't sound unpleasantly 'harsh'. It has overemphasized bass in the 100 Hz range, so you can definitely always hear the beat and bass well.”
If you're rethinking your entire setup, you'll find additional background information on DJ setups for beginners or practical EQ mixing for DJs.
FAQ
Why does the HD 25 emphasize bass and treble specifically?
According to the specialist retailer's description, the overemphasized bass in the 100 Hz range is intended to ensure that the beat and bass remain clearly audible even in loud environments, while the boost in the 8 kHz range clearly highlights transients like hi-hats.
Who is this headphone suitable for, according to the description?
For anyone who needs reliably good sound on the go and in live conditions – for several years of use, as stated in the product description.
Source: Thomann, product description and technical data Sennheiser HD 25.
