Short answer: both are discontinued, and they are rated the same for sound quality (#194 and #193 of 382 over-ear headphones). Either one is only an option used, so choose on condition and price. If you want one new, the Dan Clark Audio E3 ranks #1 at $2,299.
The case for the Sennheiser HD 555: Measured response gives it a solid Harman preference score of 73 with a 3.22 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural. The catch: Discontinued, so it is mainly found used.
Why pick the Sennheiser HD 598: Measured response gives it a solid Harman preference score of 73 with a 2.69 dB spread. Watch for: Discontinued, so it is mainly found used.
Buy the Sennheiser HD 555 or the Sennheiser HD 598, whichever you find used in better condition; both are discontinued. For a new speaker, start with the Dan Clark Audio E3 instead.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| Sennheiser HD 555 | Sennheiser HD 598 | |
|---|---|---|
| Price | Discontinued | Discontinued |
| Ranked | #194 of 382 in Over-Ear Headphones | #193 of 382 in Over-Ear Headphones |
| Form Factor | Over-ear | Over-ear |
| Back | Open | Open |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Impedance | 50 ohms | 50 ohms |
| Frequency Response | 15Hz - 28kHz | 12Hz - 38.5kHz |
| Weight | 0.6 lbs (260 g) | 0.6 lbs (270 g) |
| Harman Preference Score | 73 (measured by oratory1990, via AutoEQ) | 73 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 3.22 dB standard deviation | 2.69 dB standard deviation |
| Tonal Tilt | +0.08 (negative is warmer, positive brighter) | -0.49 (negative is warmer, positive brighter) |
| Sub-bass Extension | Falls 6 dB below target at 75 Hz (-10.7 dB at 30 Hz) | Falls 6 dB below target at 40 Hz (-8.2 dB at 30 Hz) |
| Sensitivity | - | 112 dB/Vrms |
Related Headphone Comparisons
How Sennheiser HD 598 compares with other leading options:
- Sennheiser HD 550 vs Sennheiser HD 598
- Sennheiser HD 598 vs Sennheiser HD 600
- Sennheiser HD 505 vs Sennheiser HD 598
- Sennheiser HD 598 vs Sennheiser HD 650
- Sennheiser HD 598 vs Sennheiser HD 800
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.
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The Two Headphones In Full
Sennheiser HD 555 Discontinued eBay
Pros: Measured response gives it a solid Harman preference score of 73 with a 3.22 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural.
Cons: Discontinued, so it is mainly found used. Sub-bass is 10.7 dB short at 30 Hz, so deep bass lacks rumble. Treble sits about 6.2 dB low, so it sounds a little dark.
Full Sennheiser HD 555 review and specifications →
| Back | Open |
|---|---|
| Connection | Wired |
| Deviation From Target | 3.22 dB standard deviation |
| Driver Type | Dynamic |
| Form Factor | Over-ear |
| Frequency Response | 15Hz - 28kHz |
| Harman Preference Score | 73 (measured by oratory1990, via AutoEQ) |
| Impedance | 50 ohms |
| Sub-bass Extension | Falls 6 dB below target at 75 Hz (-10.7 dB at 30 Hz) |
| Tonal Tilt | +0.08 (negative is warmer, positive brighter) |
| Weight | 0.6 lbs (260 g) |
EQ preset to match the Harman target
Set a preamp of -6.3 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 | +6.4 dB | 0.70 |
| Peak | 8,770 Hz | +6.5 dB | 0.18 |
| Peak | 235 Hz | -2.1 dB | 0.68 |
| Peak | 3,192 Hz | -8.7 dB | 1.46 |
| Peak | 1,085 Hz | -2.8 dB | 1.57 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 5,370 Hz | -2.7 dB | 6.00 |
| Peak | 4,426 Hz | +1.9 dB | 5.91 |
| Peak | 6,356 Hz | +2.3 dB | 5.93 |
| Peak | 65 Hz | +0.8 dB | 4.09 |
- Reviews, Comparisons and Sound Samples
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Sennheiser HD 598 Discontinued eBay
Pros: Measured response gives it a solid Harman preference score of 73 with a 2.69 dB spread.
Cons: Discontinued, so it is mainly found used. Sub-bass is 8.2 dB short at 30 Hz, so deep bass lacks rumble. Treble sits about 4.2 dB low, so it sounds a little dark.
Full Sennheiser HD 598 review and specifications →
| Released | 2010 (16 years ago) |
|---|---|
| Back | Open |
| Connection | Wired |
| Deviation From Target | 2.69 dB standard deviation |
| Driver Type | Dynamic |
| Form Factor | Over-ear |
| Frequency Response | 12Hz - 38.5kHz |
| Harman Preference Score | 73 (measured by oratory1990, via AutoEQ) |
| Impedance | 50 ohms |
| Sensitivity | 112 dB/Vrms |
| Sub-bass Extension | Falls 6 dB below target at 40 Hz (-8.2 dB at 30 Hz) |
| Tonal Tilt | -0.49 (negative is warmer, positive brighter) |
| Weight | 0.6 lbs (270 g) |
EQ preset to match the Harman target
Set a preamp of -6.3 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 | +6.7 dB | 0.70 |
| Peak | 133 Hz | -4.1 dB | 0.48 |
| Peak | 9,039 Hz | +5.9 dB | 1.59 |
| Peak | 1,721 Hz | +3.6 dB | 1.95 |
| Peak | 5,447 Hz | -3.8 dB | 4.67 |
| High shelf | 10,000 Hz | -1.3 dB | 0.70 |
| Peak | 3,293 Hz | -2.1 dB | 5.08 |
| Peak | 66 Hz | -0.8 dB | 2.52 |
| Peak | 728 Hz | +1.5 dB | 5.53 |
| Peak | 98 Hz | +1.1 dB | 4.37 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sennheiser HD 598 vs Sennheiser HD 599
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- Sennheiser HD 598 vs Sennheiser HD 800
- Sennheiser HD 598 vs Sennheiser HD 579
- Sennheiser HD 598 vs Sennheiser HD 650
- Sennheiser HD 598 vs Sennheiser HD 820
- Sennheiser HD 598 vs Sennheiser HD 505
- Sennheiser HD 598 vs Sennheiser HD 569
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