Sennheiser HD 650

Koss Porta Pro

Manufacturer: Sennheiser Koss
Model: HD 650 Porta Pro
Popularity: #2
Impedance: 320 Ω 60 Ω
Efficiency: 98.5 dB SPL/mW 101.0 dB SPL/mW
Frequency Response: 10 - 39,500 Hz 15 - 25,000 Hz
Transducer Type: Dynamic Dynamic
Operating Principle: Open Open
Ear Coupling: Over-ear On-ear
Weight: 260 g 70 g
Discontinued:
Current Price: $369.93 $29.97