Pair Headphones with Amps
Compare Headphones
German Maestro GMP 400

The GMP 400's sound is microscopic without missing the whole picture.

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

Other headphones by German Maestro


Similar Headphones

Model Style Impedance Price
Sennheiser HD 600 Sennheiser HD 600 Open, Over-ear 307 Ω $299.00
Sennheiser HD 650 Sennheiser HD 650 Open, Over-ear 320 Ω $319.00
Sennheiser HD 660 S Sennheiser HD 660 S Open, Over-ear 150 Ω $499.95
Sennheiser HD 700 Sennheiser HD 700 Open, Over-ear 167 Ω $749.00
Sennheiser HD 800 Sennheiser HD 800 Open, Over-ear 361 Ω $1,397.99
AKG K 612 Pro AKG K 612 Pro Open, Over-ear 125 Ω $130.00
Beyerdynamic DT 990 PRO Beyerdynamic DT 990 PRO Open, Over-ear 250 Ω $143.00

Popular amps for German Maestro GMP 400

Model Peak SPL Portable Price
Little Dot MK II Little Dot MK II 122.8 dB $139.99
Schiit Vali Schiit Vali 121.4 dB $119.00
Bottlehead Crack OTL Bottlehead Crack OTL 123.2 dB $279.00
Woo Audio WA22 Woo Audio WA22 128.4 dB $1,995.00
Woo Audio WA2 Woo Audio WA2 126.1 dB $1,190.00
Little Dot MK III Little Dot MK III 123.4 dB $288.88
Woo Audio WA3 Woo Audio WA3 123.2 dB $599.00