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The GMP 400's sound is microscopic without missing the whole picture. |
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| Impedance | 300 Ω |
|---|---|
| Efficiency | 98.0 dB SPL/mW |
| Frequency Response | 14 - 24,100 Hz |
| Transducer Type | Dynamic |
| Operating Principle | Open |
| Ear Coupling | Over-ear |
| Weight | 240 g |
| Target SPL Requirements | ||
|---|---|---|
| Target | Power | Voltage |
| 90.0 dB | 0.16 mW | 0.22 Vrms |
| 92.5 dB | 0.28 mW | 0.29 Vrms |
| 95.0 dB | 0.5 mW | 0.39 Vrms |
| 97.5 dB | 0.89 mW | 0.52 Vrms |
| 100.0 dB | 1.6 mW | 0.69 Vrms |
| 102.5 dB | 2.8 mW | 0.92 Vrms |
| 105.0 dB | 5.0 mW | 1.23 Vrms |
| 107.5 dB | 8.9 mW | 1.64 Vrms |
| 110.0 dB | 15.8 mW | 2.18 Vrms |
| Price History | |
|---|---|
| Current | $279.00 |
| Highest | $319.00 |
| Lowest | $279.00 |
| Search Item | Amazon, eBay |
| Rank | Model | Current Price |
|---|---|---|
| - | GMP 160 | Check Amazon » |
| - | GMP 240 | $169.00 |
| - | GMP 250 | $179.00 |
| - | GMP 435 S | $197.11 |
| - | GMP 450 PRO | $249.00 |
| - | GMP 8.300 D PRO | $190.00 |
| - | GMP 8.35 D Monitor | $225.00 |
| Model | Style | Impedance | Price |
|---|---|---|---|
| Sennheiser HD 600 | Open, Over-ear | 307 Ω | $299.00 |
| Sennheiser HD 650 | Open, Over-ear | 320 Ω | $369.93 |
| Sennheiser HD 660 S | Open, Over-ear | 150 Ω | $489.99 |
| Sennheiser HD 700 | Open, Over-ear | 167 Ω | $693.73 |
| AKG K 612 Pro | Open, Over-ear | 125 Ω | $122.00 |
| Beyerdynamic DT 990 PRO | Open, Over-ear | 250 Ω | $128.88 |
| Beyerdynamic DT 990 Edition (250 Ω) | Open, Over-ear | 250 Ω | $154.57 |
| Model | Peak SPL | Portable | Price |
|---|---|---|---|
| Little Dot MK II | 122.8 dB | $139.99 | |
| Schiit Vali | 121.4 dB | $119.00 | |
| Bottlehead Crack OTL | 123.2 dB | $279.00 | |
| Woo Audio WA22 | 128.4 dB | $1,995.00 | |
| Woo Audio WA2 | 126.1 dB | $1,190.00 | |
| Little Dot MK III | 123.4 dB | $278.00 | |
| Woo Audio WA3 | 123.2 dB | $599.00 |
