Frequency Range: 6-26,000 Hz
Nominal Impedance: 32 ohms
Sound Pressure Level (SPL): 91 dB
Unlike some other high-end headphones at this price, the Abyss Diana Phi offers some realistic-looking stats. The frequency range hints at a little extra emphasis on lows and highs. Fairly efficient, the Diana Phi sports a frequency range of 32 ohms. Surprisingly, my FiiO Q5 remains up to the challenge of driving it, though nearly at max volume. But a good DAC and a juicy amp should be considered standard kit to get the most out of this headphone. Supporting the need for an amp, Sound Pressure comes in at 91 decibels – light even for an open-back headphone.