FiiO K7 Desktop DAC and Headphone Amplifier with Balanced Headphone Outputs (In Stock) (C-Plan Specials)
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Frequency Response Curve 1
Test conditions：USB input, -5dB Sinusoidal signal，High gain，6.35SE PO (32Ω loaded)
Red: left channel; Blue: right channel
Frequency Response Curve 2
Test conditions：USB input, -5dB Sinusoidal signal，High gain，4.4mmBAL PO (32Ω loaded)
Red: left channel; Blue: right channel
Frequency Response Curve 3
Test conditions：USB input, -6dB Sinusoidal signal，High gain，20Hz-50KHz，RCALINE OUT (10KΩ loaded)
Red: left channel; Blue: right channel
Frequency Response Curve 4
Test conditions：COAX input, -5dB Sinusoidal signal，low gain，6.35SE PO (32Ω loaded)
Red: left channel; Blue: right channel
Frequency response curve 5
Test conditions：COAX input, -5dB Sinusoidal signal，High gain，4.4mmBAL PO (32Ω loaded)
Red: left channel; Blue: right channel
Frequency response curve 6
Test conditions：COAX input, -5dB Sinusoidal signal，High gain，RCA LINE OUT (10KΩ loaded)
Red: left channel; Blue: right channel
Frequency Response Curve 7
Test conditions：OPT input, -5dB Sinusoidal signal，High gain，6.35SE PO (32Ω loaded)
Red: left channel; Blue: right channel
Frequency Response Curve 8
Test conditions：OPT input, -5dB Sinusoidal signal，High gain，4.4mmBAL PO (32Ω loaded)
Red: left channel; Blue: right channel
frequency response curve 9
Test conditions：OPT input, -6dB Sinusoidal signal，High gain，RCA LINE OUT (10KΩ loaded)
Red: left channel; Blue: right channel
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