RH5MA monitor headphones are recognized by sound experts as superior monitoring headphones capable of producing extraordinarily accurate sound reproduction. These headphones are particularly proficient in the difficult low to mid-low frequencies and can flawlessly replicate even the most precise mix Frequency Response 20 Hz - 20 kHz Impedance 32 ohms Sensitivity 98 dB/mW Jacks 1/8" plug and 1/4" adaptor