Fiio
Fiio K19 Headphone Amplifier Dac
Fiio K19 Headphone Amplifier Dac
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The new Fiio K19 features an ultra-high performance USB DAC and headphone amplifier has been designed to revolutionize your listening experience. Enjoy audio at its finest thanks to an industry-leading ESS 9038PRO flagship dual DAC combination, paired with our most powerful THX AAA amplifiers to faithfully reproduce your music. All of this joins a new DSP section, allowing for more audio customization and configurability than ever.
Equipped with USB-C, optical, coaxial, Bluetooth, and for the first time, HDMI digital inputs; RCA and 3-pin XLR balanced analog line level outputs; and three headphone jacks (1/4" single-ended, 4.4mm balanced, and 4-pin XLR balanced), the K19 is designed to elevate your audio experience no matter what audio source you're using with your headphones and speakers. Five switchable gain levels are available, enabling you to use the built-in amplifier at comfortable volume levels with your entire collection of headphones and earphones.
The K19 features DEL (Dual Engine Limiter) technology, and through proprietary algorithms, it can apply various audio effects such as dynamic range compression (DRC) and dynamic range enhancement (DRE), as well as an advanced limiter to prevent clipping.
Also on the K19 is an adjustable 31-band high-precision lossless PEQ*, which supports direct adjustment of PCM 44.1k~192k audio signals without resorting to sampling rate conversion (SRC). For each band, the gain can be adjusted between a range of +12~-24dB and the Q value can be adjusted between a range of 0.4dB~128dB.
And the equalizer curves don’t have to be used only by you — PEQ presets on the K19 can be shared between users. Being able to import and export PEQ presets opens up a whole new dimension to sound adjustment. *PEQ adjustment is supported on Windows and Mac computers, as well as with the FiiO Control smartphone app.
| Specifications: | |||
| Name/Model No. | K19 | Hardware solution | DAC: ES9039SPRO*2; USB: XMOS XU316; Bluetooth decoding: QCC5125; AMP: 8-way THX788+ |
| Working mode | USB DAC mode/Coaxial decoding mode/Optical decoding mode/HDMI decoding mode/HDMI ARC decoding mode/Bluetooth receiving mode | ||
| Color | Black/Silver | Weight | About 1800g |
| Dimensions | About 250x225x36.7mm | Volume control type | Knob/Remote control |
| MQA | Support MQA global decoding | Drive-free mode (Switch mode) | Surpported |
| Gain | Ultra high gain/Super high gain/High gain/Medium gain/Low gain | Bluetooth reception (5.1) | SBC/AAC/aptX/aptX LL/aptX HD/atpX Adaptive/LDAC |
| Display | 1.30-inch TFT (240*240) fully laminated screen | Display status indication | Display indication: volume, gain, output mode, working mode, transmission format, sampling rate, EQ, etc. |
| Bluetooth format indication | Surpported | Sample rate indication | Surpported |
| FIIO Control | Surpported | Firmware upgrade | System firmware: upgrade through front panel USB interface XMOS firmware: upgrade via front or rear panel USB interface Bluetooth Firmware: Upgrade via FIIO Control |
| Remote control | Supports infrared remote control (only the delivered remote control is supported) | Sample rate indication (Knob indicator light) |
Blue：44.1/48kHz |
| Maximum supported sampling rate | USB decoding: supports up to 768kHz/32bit; DSD512 (Native) | Yellow：88.2/96/176.4/192/352.8/384/705.6/768kHz | |
| Coaxial input decoding: supports up to 192kHz/24bit; DSD64 | Green：DSD64/128/256/512 | ||
| Optical input decoding: supports up to 96kHz/24bit | Magenta：MQA | ||
| Coaxial output: supports up to 192kHz/24bit; DSD64 | Bluetooth format indicator (Knob indicator light) |
Bule：SBC | |
| Optical fiber output: supports up to 192kHz/24bit | Cyan：AAC | ||
| HDMI decoding: supports up to 192kHz/24bit | Purple：aptX/aptX LL | ||
| HDMI output: supports up to 192kHz/24bit | Yellow：aptX HD | ||
| HDMI ARC decoding: supports 44.1/48kHz | Green：aptX Adaptive | ||
| Adaptation impedance | PO：8~150Ω | White：LDAC | |
| BAL：8~350Ω | |||
| Buttons and Interfaces | |||
| Buttons | Encoder knob (volume knob with button*1+menu knob with button*1) | USB interface | Type-C USB (data transmission interface*2+RS232 DSP adjustment interface*1) |
| DC power input interface | Φ6.2mm DC socket | Toggle Switches | DC power supply and AC power supply selector switch*1+ground selector switch*1 |
| Digital optical input interface | fiber optic socket | Digital coaxial input interface | RCA socket |
| Digital optical output interface | fiber optic socket | Digital coaxial output interface | RCA socket |
| Balanced output interface | Standard 4.4mm socket*1+XLR4 balanced socket*1 | Headphone output interface | Standard 6.35mm socket |
| Balanced line output interface | XLR3 balanced socket | Single-ended line output interface | RCA socket*2 |
| HDMI interface | HDMI IN interface*1; HDMI OUT(ARC) interface*1 | TRIGGER interface | Standard 3.5mm headphone jack (TRIGGER IN interface*1+TRIGGER OUT interface*1) |
| Power parameters | |||
| Power supply | Support AC 100-240V~50/60Hz; DC 15V/≥3A (choose one of the two) | Battery capacity | None |
| Audio parameters | |||
| Some performance parameters of headphone output (6.35mm output, USB DAC/Coaxial decoding/Optical decoding, Ultra high gain mode) | |||
| Output power 1 | L+R≥4000mW+4000mW（16Ω，THD+N＜1%) | Output impedance | ＜0.6Ω（32Ω） |
| Output power 2 | L+R≥2300mW+2300mW（32Ω，THD+N＜1%) | Crosstalk | ≥75dB (1kHz@32Ω) |
| Output power 3 | L+R≥270mW+270mW（300Ω ，THD+N＜1%) | THD+N | ＜0.0003%(1kHz/-6dB@32Ω) |
| Noise floor | <3.5μV (A-weighted) | SNR | ≥127dB (A-weighted) |
| Frequency response | 20Hz~20kHz: Attenuation <0.2dB 20Hz~80kHz: Attenuation＜3dB |
Peak output voltage | ＞22.5Vp-p |
| Some performance parameters of headphone output (6.35mm output, USB DAC/Coaxial decoding/Optical decoding, Super high gain mode) | |||
| Output power 1 | L+R≥2400mW+2400mW（16Ω，THD+N＜1%) | Output impedance | ＜0.6Ω（32Ω） |
| Output power 2 | L+R≥1250mW+1250mW（32Ω，THD+N＜1%) | Crosstalk | ≥75dB (1kHz@32Ω) |
| Output power 3 | L+R≥135mW+135mW（300Ω ，THD+N＜1%) | THD+N | ＜0.0003%(1kHz/-4dB@32Ω) |
| Noise floor | <3.5μV (A-weighted) | SNR | ≥127dB (A-weighted) |
| Frequency response | 20Hz~20kHz: Attenuation <0.2dB 20Hz~80kHz: Attenuation＜3dB |
Peak output voltage | ＞17.5Vp-p |
| Some performance parameters of single-ended line output (RCA output, USB DAC/Coaxial decoding/Optical decoding) | |||
| THD+N | ＜0.00032%(1kHz/-0.8dB@10kΩ) | SNR | ≥122dB (A计权) |
| Crosstalk | ≥110dB (1kHz@10kΩ) | Noise floor | ＜1.6μV（A计权） |
| Frequency response | 20Hz~20kHz: Attenuation <0.1dB 20Hz~80kHz: Attenuation＜3dB |
Line output level | 2.5Vrms (1kHz@10kΩ) |
| Some performance parameters of balanced headphone output (4.4mm/XLR4 output, USB DAC/Coaxial decoding/Optical decoding, Ultra high gain mode) | |||
| Output power 1 | L+R≥4000mW+4000mW（16Ω，THD+N＜1%) | Output impedance | ＜0.6Ω（32Ω） |
| Output power 2 | L+R≥8000mW+8000mW（32Ω，THD+N＜1%) | Crosstalk | ≥120dB (1kHz@32Ω) |
| Output power 3 | L+R≥1100mW+1100mW（300Ω ，THD+N＜1%) | THD+N | ＜0.0002%(1kHz/-6dB@32Ω) |
| Noise floor | <6μV (A-weighted) | SNR | ≥128dB (A-weighted) |
| Frequency response | 20Hz~20kHz: Attenuation <0.2dB 20Hz~80kHz: Attenuation＜3dB |
Peak output voltage | ＞45Vp-p |
| Some performance parameters of balanced headphone output (4.4mm/XLR4 output, USB DAC/Coaxial decoding/Optical decoding, Super high gain mode) | |||
| Output power 1 | L+R≥4000mW+4000mW（16Ω，THD+N＜1%) | Output impedance | ＜0.6Ω（32Ω） |
| Output power 2 | L+R≥5000mW+5000mW（32Ω，THD+N＜1%) | Crosstalk | ≥120dB (1kHz@32Ω) |
| Output power 3 | L+R≥550mW+550mW（300Ω ，THD+N＜1%) | THD+N | ＜0.0003%(1kHz/-9dB@32Ω) |
| Noise floor | <6μV (A-weighted) | SNR | ≥126dB (A-weighted) |
| Frequency response | 20Hz~20kHz: Attenuation <0.2dB 20Hz~80kHz: Attenuation＜3dB |
Peak output voltage | ＞35.8Vp-p |
| Balanced line output performance parameters (XLR3, USB DAC/Coaxial decoding/Optical decoding) | |||
| THD+N | ＜0.00025%(1kHz/0dB@10kΩ) | SNR | ≥128dB (A-weighted) |
| Crosstalk | ≥120dB (1kHz@10kΩ) | Noise floor | <2.0μV (A-weighted) |
| Frequency response | 20Hz~20kHz: Attenuation <0.1dB 20Hz~80kHz: Attenuation＜3dB |
Line output level | 4.8Vrms (1kHz@10kΩ) |
