Description
Fiio K9 Pro ESS Flagship Desktop Headphone Amplifier Dac
No Discounts Possible With This Product
Affirm CANNOT Be Used With This Product
The Fiio K9 Pro is designed to be uncompromising as both an amp and a DAC. Its outstanding performance will ensure you want to leave a spot for the K9 Pro in your collection of audio gear.
The K9 Pro is equipped with the ESS 9038PRO, renowned in the audio industry for its exceptional performance and unparalleled decoding capabilities, supporting up to 384 kHz and native DSD256 audio. And given its current scarcity, it is definitely a chip many are eager to experience.
The THX AAA 788+ used in the K9 Pro provide exemplary details and dynamics no matter if you are using low or high-impedance headphones. The K9 Pro can output up to 46Vpp transients when driving high-impedance loads, and up to an undistorted 2W* when pushing low-impedance loads. Compared to the original, the output power of the K9 Pro has increased by more than 50% with higher heat dissipation efficiency.
| SPECIFICATIONS | |
|---|---|
| Product type | DAC Headphone amplifier |
| Dac | ESS9038 PRO |
| Inputs | Bluetooth 1x USB-B 1x Single-ended stereo RCA 1x Balanced Jack 4.4mm 1x Optical Toslink 1x Coaxial |
| Outputs | 1x Single-ended stereo RCA line output 1x Balanced stereo XLR line output 1x Single-ended Jack 6.35mm headphone output 1x Balanced Jack 4.4mm headphone output 1x Balanced XLR 4 pins headphone output |
| USB Interface | XMOS XUF208 |
| Bluetooth chip | QCC5124 |
| LPF | 2x OPA1612 |
| Volume controller | 2x NJU72315 |
| Amplification chip | 2x THX AAA788+ |
| Channels balance | L12~R12 (0.5dB per level) |
| Gain | L (Low) M (Medium) H (High) |
| FiiO Control | |
| Supported Bluetooth codecs | AAC, SBC, aptX, aptX LL, aptX HD, LDAC, aptX Adaptive |
| Bluetooth codecs indicators | SBC : Blue AAC : Cyan aptX HD : Yellow aptX : Purple aptX LL : Purple LDAC : White aptX Adaptive : Green |
| Supported sampling rates | USB : PCM up to 32bit 384kHz, DSD up to DSD256 Coaxial : PCM up to 24bit 192kHz Optical : PCM up to 24bit 96kHz |
| Recommended headphone impedance | 16~600Ω |
| SINGLE-ENDED LINE OUTPUT PERFORMANCES | |
|---|---|
| THD+N | < 0.0007% (1kHz/10kΩ/dBA) |
| SNR | ≥ 123dB (dBA) |
| Crosstalk | ≥ 110dB (1kHz/10kΩ) |
| Noise floor | < 1.9µV (dBA) |
| Frequency response | 20Hz~20kHz (-3dB) |
| Line level | 2.5Vrms (1kHz/10kΩ) |
| BALANCED LINE OUTPUT PERFORMANCES | |
|---|---|
| THD+N | < 0.0004% (1kHz/10kΩ/dBA) |
| SNR | ≥ 128dB (dBA) |
| Crosstalk | ≥ 123dB (1kHz/10kΩ) |
| Noise floor | < 1.9µV (dBA) |
| Frequency response | 20Hz~20kHz (-3dB) |
| Line level | 5Vrms (1kHz/10kΩ) |
| SINGLE-ENDED HEADPHONE OUTPUT PERFORMANCES (JACK 6.35MM) | |
|---|---|
| Output power | ≥ 1.1W @ 16Ω, THD+N < 1%, AUX IN ≥ 2W @ 32Ω, THD+N < 1%, AUX IN ≥ 278mW @ 300Ω, THD+N < 1%, AUX IN |
| Output impedance | < 1Ω (32Ω) |
| Crosstalk | ≥ 75dB (1kHz, 32Ω, AUX IN) |
| THD+N | < 0.0005% (1kHz/32Ω/dBA) |
| Noise floor | < 2µV(dBA) |
| SNR | ≥ 123dBA |
| Frequency response | 20Hz~20kHz (-3dB) |
| Max output voltage | > 256Vp-p |
| BALANCED HEADPHONE OUTPUT PERFORMANCES (JACK 4.4MM, XLR4) | |
|---|---|
| Output power | ≥ 1.1W @ 16Ω, THD+N < 1%, AUX IN ≥ 2W @ 32Ω, THD+N < 1%, AUX IN ≥ 278mW @ 300Ω, THD+N < 1%, AUX IN |
| Output impedance | < 1Ω (32Ω) |
| Crosstalk | ≥ 114dB (1kHz, AUX IN) |
| THD+N | < 0.0004% (1kHz/32Ω/dBA) |
| Noise floor | < 3µV(dBA) |
| SNR | ≥ 123dBA |
| Frequency floor | 5Hz~50kHz (-3dB) |
| Max output level | >51Vp-p |
| GENERAL | |
|---|---|
| Supply voltage | 110-115VAC / 220-230VAC |
| Dimensions | |
| Weight | ~2750g |
| Case material | Aluminum |
| Color | Black |
