| Impedance | 167 Ω |
|---|---|
| Efficiency | 98.5 dB SPL/mW |
| Frequency Response | 10 - 42,000 Hz |
| Transducer Type | Dynamic |
| Operating Principle | Open |
| Ear Coupling | Over-ear |
| Weight | 270 g |
| 3rd Party Measurements | www.innerfidelity.com |
| Additional Notes | |
| "These awesome, open circumaural headphones with tuned, highly-efficient drivers and only the finest acoustic materials will please even the most discriminating audiophile. They also look and feel great." | |
| Target SPL Requirements | ||
|---|---|---|
| Target | Power | Voltage |
| 90.0 dB | 0.14 mW | 0.15 Vrms |
| 92.5 dB | 0.25 mW | 0.2 Vrms |
| 95.0 dB | 0.45 mW | 0.27 Vrms |
| 97.5 dB | 0.79 mW | 0.36 Vrms |
| 100.0 dB | 1.4 mW | 0.49 Vrms |
| 102.5 dB | 2.5 mW | 0.65 Vrms |
| 105.0 dB | 4.5 mW | 0.86 Vrms |
| 107.5 dB | 7.9 mW | 1.15 Vrms |
| 110.0 dB | 14.1 mW | 1.54 Vrms |
| Price History | |
|---|---|
| Current | $693.73 |
| Highest | $1,099.95 |
| Lowest | $693.73 |
| Search Item | Amazon, eBay |
| Rank | Model | Current Price |
|---|---|---|
| - | HD 202 II | $36.00 |
| - | HD 229 | $147.59 |
| - | HD 451 | $55.00 |
| - | HD 558 | $199.99 |
| #12 | HD 600 | $299.00 |
| #37 | HD 660 S | $489.99 |
| - | HD 800 | $1,999.00 |
| #19 | HD 800 S | $1,599.94 |
| - | PX 100-II | $1,006.00 |
| - | Urbanite XL | $67.69 |
| Model | Style | Impedance | Price |
|---|---|---|---|
| Sennheiser HD 660 S | Open, Over-ear | 150 Ω | $489.99 |
| AKG K 712 Pro | Open, Over-ear | 62 Ω | $339.00 |
| AKG K 7XX | Open, Over-ear | 62 Ω | $175.00 |
| Shure SRH1840 | Open, Over-ear | 65 Ω | $499.00 |
| Sennheiser HD 598 | Open, Over-ear | 61 Ω | $439.99 |
| AKG K 702 | Open, Over-ear | 62 Ω | $212.12 |
| Grado GS1000e | Open, Over-ear | 32 Ω | $995.00 |
| Model | Peak SPL | Portable | Price |
|---|---|---|---|
| Little Dot MK II | 120.1 dB | $139.99 | |
| Schiit Vali | 120.7 dB | $119.00 | |
| Pathos Acoustics Aurium | 126.9 dB | $1,495.00 | |
| Woo Audio WA22 | 129.1 dB | $1,995.00 | |
| Woo Audio WA2 | 124.5 dB | $1,190.00 | |
| Woo Audio WA3 | 121.4 dB | $599.00 | |
| Qinpu Q2 | 119.3 dB | $99.00 |
