Professional 8 Channel Headphone Amplifier Compact Headphone Amp for Recording Studios Stage EU Plug Item Type: 8 Channel Headphone Amplifier Material: Iron Shell Sound Input Parameters: Main Inputs: 4x1/4in, Servo Balanced Maximum Input Level: +16dBu Common Mode Rejection Ratio: >50dB Direct Input: 1x1/4in, Stereo Impedance: 20kΩ Balanced, 10kΩ Unbalanced Sound Output Parameters: Headphone Outputs: 8x1/4in, Stereo Maximum Output Level: +24dBm at 100Ω, +19dBm at 8Ω Minimum Impedance: 8Ω Frequency Response: 10Hz to 150kHz, ±3dB Signal to Noise Ratio: >80 dB at 0 dBu (22 Hz to 55kHz) Power Consumption: 35W Dynamic Range: 103 dB (22 Hz to 55kHz) Fuse: T1.25AL250V Distortion: 0.007%typ. at +4 dBu (1kHz, Gain1)