The Sennheiser HD 25 Aluminium ranks #145 out of 382 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Sennheiser
Prices on this page were last checked October 12, 2026 at 4:13 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
As an eBay Partner, we may be compensated if you make a purchase.
#145 Sennheiser HD 25 Aluminium Discontinued eBay
Pros: Crinacle’s measurement gives it a very good Harman preference score of 78 with a 2.61 dB spread. Its tonal tilt of -0.25 sits close to the target, so the overall balance is neither dark nor bright.
Cons: Discontinued, so it is mainly found used. Its 2.61 dB spread is less even than the best measured sets.
| Released | May 2013 (13 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 2.61 dB standard deviation |
| Driver Type | Dynamic |
| Form Factor | Over-ear |
| Frequency Response | 16Hz - 22kHz |
| Harman Preference Score | 78 (measured by crinacle, via AutoEQ) |
| Impedance | 70 ohms |
| Tonal Tilt | -0.25 (negative is warmer, positive brighter) |
| Weight | 0.3 lbs (140 g) |
EQ preset to match the Harman target
Set a preamp of -6.6 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +7.3 dB | 0.70 |
| Peak | 131 Hz | -5.5 dB | 0.41 |
| Peak | 427 Hz | +4.5 dB | 0.89 |
| Peak | 5,224 Hz | +9.1 dB | 1.44 |
| Peak | 4,223 Hz | -3.7 dB | 0.45 |
| High shelf | 10,000 Hz | +5.5 dB | 0.70 |
| Peak | 8,709 Hz | -2.4 dB | 2.62 |
| Peak | 39 Hz | +1.0 dB | 3.66 |
| Peak | 76 Hz | -0.9 dB | 3.41 |
| Peak | 144 Hz | +0.4 dB | 2.37 |
- Reviews, Comparisons and Sound Samples