The Sennheiser HD 400 S ranks #98 out of 165 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 10, 2026 at 5:37 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.
#98 Sennheiser HD 400 S: $69.95 B&H Photo Video eBay
Pros: Crinacle’s measurement gives it a solid preference score of 68, a respectable result for a budget closed headphone. With 18 ohm impedance and 120 dB/V sensitivity it gets loud from any phone, and at 217 g it is light, with an inline microphone for calls.
Cons: A 3.2 dB spread around the target means the response is not especially smooth. The AKG K240 Studio earns the same rating for less money.
| Back | Closed |
|---|---|
| Built-in Microphone | Yes |
| Connection | Wired |
| Deviation From Target | 3.23 dB standard deviation |
| Driver Type | Dynamic |
| Form Factor | Over-ear |
| Frequency Response | 18Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 68 (measured by crinacle, via AutoEQ) |
| Impedance | 18 ohms |
| Sensitivity | 120 dB SPL/V |
| Tonal Tilt | -0.35 (negative is warmer, positive brighter) |
| Weight | 0.5 lbs (217 g) |
EQ preset to match the Harman target
Set a preamp of -3.8 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 | +7.5 dB | 0.70 |
| Peak | 195 Hz | -16.4 dB | 0.18 |
| Peak | 5,708 Hz | +8.8 dB | 0.96 |
| Peak | 223 Hz | +19.5 dB | 0.50 |
| Peak | 5,459 Hz | -10.9 dB | 2.60 |
| High shelf | 10,000 Hz | +1.7 dB | 0.70 |
| Peak | 58 Hz | -0.9 dB | 2.68 |
| Peak | 775 Hz | +1.1 dB | 2.76 |
| Peak | 3,779 Hz | +3.7 dB | 4.57 |
| Peak | 3,093 Hz | -1.5 dB | 0.84 |
- Reviews, Comparisons and Sound Samples