Fiio
First released in 2021
K9 Pro ESS
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If you make a purchase, Linephaze may receive an affiliate commission.Specifications
dac resolution linear pcmUp to 32 bit / 384 kHz PCM, DSD 2.8 / 5.6 / 11.2 MHz
Digital InputsUSB: Type-C, USB B (Data Transmission), SPDIF In: Optical Fiber Socket, Digital Coaxial Input Interface: RCA Socket
Sampling FrequenciesMaximum Supported Sampling Rate: USB DAC: 384kHz-32bit/DSD256, Coaxial: 192kHz-24bit, Optical: 96kHz-24bit
Signal to Noise RatioSingle-Ended Line Output: ≥123dB (dBA), Balanced Line Output: ≥128dB (dBA), Single-Ended Headphone Output: ≥129dB (dBA), Balanced Headphone Output: ≥123dB (dBA)
THD + NSingle-Ended Line Output: <0.00042% (1kHz/10kΩ/A-weighting), Balanced Line Output: <0.00025% (1kHz/10kΩ/A-weighting), Single-Ended Headphone Output: <0.00033% (1kHz/32Ω/dBA), Balanced Headphone Output: <0.0003% (1kHz/32Ω/dBA)
Channel SeparationSingle-Ended Line Output: ≥115dB (1kHz/10kΩ), Balanced Line Output: ≥125dB (1kHz/10kΩ), Single-Ended Headphone Output: ≥75dB (1kHz/32Ω, AUX IN), Balanced Headphone Output: ≥114dB (1kHz, AUX IN)
3rd Party IntegrationFiiO Control: Supported, Bluetooth Format Indication: Supported, Sampling Rate Indication: Supported, Firmware Upgrade: System Firmware And Bluetooth Version Can Be Upgraded Via USB
Output VoltageSingle-Ended Line Output: 2.5Vrms (1kHz/10kΩ), Balanced Line Output: 5Vrms (1kHz/10kΩ), Single-Ended Headphone Output: Max Output Voltage: >26Vp-p, Balanced Headphone Output: Max Output Voltage: >52Vp-p
Output ImpedanceSingle-Ended Headphone Output: <1Ω (32Ω), Balanced Headphone Output: <1Ω (32Ω)
Dimensions (W x H x D)200 x 224.5 x 72 mm
Weight2.75 kg