For top audio fidelity the PMA-50 is equipped with a dedicated headphone amplifier circuit that features a high speed ultra low distortion wideband op amp that's paired with a fully discrete final output stage.
In order to accommodate the widest range of headphone types, the PMA-50 features an adjustable headphone impedance control, with 3 settings for low, medium and high impedance headphones which provide proper matching of headphone impedance and amplifier gain.
The headphone jack features a 6.3mm connector for compatibility with premium home and professional studio headphone models.
Specifications:
Output power 8 Ohm (20 Hz - 20 kHz, T.H.D. 0.07%) 30 W
Output power 4 Ohm (1 kHz, T.H.D. 0.7%) 50 W
Total Harmonic Distortion: 0.004 %
Input Sensitivity: High level70 mV
Signal to Noise Ratio: High level110dB
Treble Control: ± 8 dB at 12 kHz
Bass Control: ± 8 dB at 100 Hz