The Sennheiser CXL400 Earbud Headphones features Frequency Response 17Hz-21KHz, THD < 0.2 %, Input Impedance 16 ohms, and Sensitivity 113dB S.P.L. at 1KHz
The Polk Audio VM10 Titanium High Performance Loudspeaker features Power Rating 20-150 w/channel, Frequency Response 90Hz-26kHz, Nominal Impedance 8 ohms, and Sensitivity 89 dB