Short answer: the AKG K701. Both are rated 4.1/5 for sound quality (#35 and #34 of 134 over-ear headphones), and the AKG K701 costs $249.99 against $329.80 for the Sennheiser HD 650, and with sound quality even, the cheaper one is the better buy.
The case for the AKG K701: A preference score of 83 with a deviation of 2.14 dB shows a smooth response. The tradeoff: A 4.2 dB peak near 5.9 kHz can add some edge to vocals and sibilants.
What the Sennheiser HD 650 does well: A preference score of 84 and a warm tilt of minus 0.27 give a relaxed, smooth sound, with bass from 60 to 200 Hz, mids and presence all within about 0.6 dB of target. The tradeoff: Sub-bass is about 7 dB under target and the 6 to 10 kHz treble is nearly 5 dB low, with a 9 dB dip near 9.3 kHz, so cymbals and air sound dull and rumble is missing.
Buy the AKG K701. Both are rated the same for sound quality, and it costs $79.81 less than the Sennheiser HD 650.
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Specifications Side By Side
| AKG K701 | Sennheiser HD 650 | |
|---|---|---|
| Price | $249.99 | $329.80 |
| Ranked | #35 of 134 in Over-Ear Headphones | #34 of 134 in Over-Ear Headphones |
| Form Factor | Over-ear | Over-ear |
| Harman Preference Score | 83 (measured by oratory1990, via AutoEQ) | 84 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 2.14 dB standard deviation | 2.10 dB standard deviation |
| Tonal Tilt | -0.31 (negative is warmer, positive brighter) | -0.27 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Back | Open | Open |
| Driver Type | Dynamic | Dynamic |
| Impedance | 62 ohms | 300 ohms |
| Sensitivity | 105 dB/mW | 103 dB SPL/V |
| Weight | 0.5 lbs (235 g) | 0.6 lbs (260 g) |
| Frequency Response | 10Hz - 39.8kHz (Manufacturer specified) | 10Hz - 41kHz (Manufacturer specified) |
| Drivers | - | 1 x 42mm dynamic |
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- AKG K702 vs Sennheiser HD 650
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- Sennheiser HD 650 vs Sennheiser HD 569
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The Two Headphones In Full
AKG K701: $249.99 Amazon eBay
Pros: A preference score of 83 with a deviation of 2.14 dB shows a smooth response. Bass from 60 to 200 Hz is about 1.6 dB above target and low mids about 2.3 dB above, giving warm, full vocals and bass guitar, while treble from 6 to 10 kHz lands within 0.2 dB of target. At 62 ohms and 105 dB/mW sensitivity it runs fine from most sources, and 235 g is light. It costs less than the AKG K702 at the same rating.
Cons: A 4.2 dB peak near 5.9 kHz can add some edge to vocals and sibilants. Sub-bass is about 3.5 dB under target, and the low mids may sound slightly thick on busy mixes. The open back leaks sound and offers no isolation.
Full AKG K701 review and specifications →
| Back | Open |
|---|---|
| Connection | Wired |
| Deviation From Target | 2.14 dB standard deviation |
| Driver Type | Dynamic |
| Form Factor | Over-ear |
| Frequency Response | 10Hz - 39.8kHz (Manufacturer specified) |
| Harman Preference Score | 83 (measured by oratory1990, via AutoEQ) |
| Impedance | 62 ohms |
| Sensitivity | 105 dB/mW |
| Tonal Tilt | -0.31 (negative is warmer, positive brighter) |
| Weight | 0.5 lbs (235 g) |
EQ preset to match the Harman target
Set a preamp of -6.1 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 | 131 Hz | -4.1 dB | 0.21 |
| Peak | 937 Hz | +3.7 dB | 0.65 |
| Peak | 2,378 Hz | -3.3 dB | 2.56 |
| Peak | 3,536 Hz | +3.6 dB | 3.04 |
| High shelf | 10,000 Hz | -0.6 dB | 0.70 |
| Peak | 5,837 Hz | -2.9 dB | 5.42 |
| Peak | 55 Hz | -0.9 dB | 1.90 |
| Peak | 116 Hz | +1.2 dB | 3.55 |
| Peak | 27 Hz | +0.7 dB | 3.27 |
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Sennheiser HD 650: $329.80 Amazon eBay
Pros: A preference score of 84 and a warm tilt of minus 0.27 give a relaxed, smooth sound, with bass from 60 to 200 Hz, mids and presence all within about 0.6 dB of target. The largest peak in the upper range is just 1.1 dB, so it avoids harshness on vocals and guitars. At 260 g it is fairly light, and it is a good match for listeners who like a warm tonality.
Cons: Sub-bass is about 7 dB under target and the 6 to 10 kHz treble is nearly 5 dB low, with a 9 dB dip near 9.3 kHz, so cymbals and air sound dull and rumble is missing. At 300 ohms it wants a dedicated headphone amp to reach its potential, and the open back leaks sound.
Full Sennheiser HD 650 review and specifications →
| Released | 2003 (23 years ago) |
|---|---|
| Back | Open |
| Connection | Wired |
| Deviation From Target | 2.10 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 42mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 10Hz - 41kHz (Manufacturer specified) |
| Harman Preference Score | 84 (measured by oratory1990, via AutoEQ) |
| Impedance | 300 ohms |
| Sensitivity | 103 dB SPL/V |
| Tonal Tilt | -0.27 (negative is warmer, positive brighter) |
| Weight | 0.6 lbs (260 g) |
EQ preset to match the Harman target
Set a preamp of -6.1 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 | 8,800 Hz | +5.1 dB | 1.42 |
| Peak | 118 Hz | -3.1 dB | 0.50 |
| Peak | 37 Hz | +0.7 dB | 3.96 |
| Peak | 3,169 Hz | -1.7 dB | 3.89 |
| High shelf | 10,000 Hz | -2.1 dB | 0.70 |
| Peak | 1,227 Hz | -1.2 dB | 2.53 |
| Peak | 2,055 Hz | +1.2 dB | 3.23 |
| Peak | 587 Hz | +0.4 dB | 1.19 |
| Peak | 5,332 Hz | -1.1 dB | 5.75 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons