FiiO K7 Desktop DAC & AMP

Features

  • Truly balanced headphone amp
  • THX AAA 788+ amp technology
  • Dual AK4493S DACs
  • Multiple intelligent protection systems
  • Power supply with numerous independent LDOs
  • Included 12V/24W low-noise switching power supply
  • RGB status indicators
  • 3 output modes
  • Two levels of hardware gain
  • Numerous outputs and inputs

Truly balanced decoding and amplification

The K7 has a six-stage audio circuit with truly balanced analog and digital sections – which helps to reduce crosstalk and reproduce music to a great extent, allowing you to better enjoy the purity of your music.

Democratized high-quality balanced amplification couldn’t sound better

Using the same THX AAA 788+ amplifiers as the K9 Pro, the K7 is capable of outputting 560mW into a 300Ω load at 1% distortion, and 2000mW into a 32Ω load at 1% distortion. This ensures both low and high impedance headphones are powered with aplomb, and most importantly lets you experience musicality that’s sure to tug at your heartstrings.

Dual AK4493SEQ rich and delicate overall sound

The left and right channels are each equipped with an efficient high-performance AK4493SEQ. With this DAC’s pleasant timbre, its rich and delicate overall sound will let you rediscover your music all over again.

Robust decoding capabilities take a trip around the music world

The XMOS XUF208 decoder chip uses dual clock management to handle various music formats with ease, allowing you to easily listen to many audio formats.

RGB indicator lights for a colorful entrance

The RGB indicator lights are capable of displaying single colors as well as mixed colors, with a unique light flow effect during power-on/off or input switching. Dazzling and vivid light effects give your desk some much needed spice.

Specifications
Name / Model No.  K7 Hardware solution  DAC: AK4493S*2 , USB: XMOS XUF208 , Voume IC:NJU72315 * 2, AMP:THX AAA 788+ * 2
Color  Black Volume Scroll Potentiometer+ADC Sampling
Weight ≈610g FiiO Control Unsupported
Gain L/H Firmware upgrade XMOS can be upgraded via USB 
Maximum supported sampling rate

PCM 384kHz-32bit/DSD256(USB DAC)

PCM 192kHz-24bit(COAX)

PCM 96KHz-24bit(OPT)

Sampling rate indication Blue:44.1KHz/48KHz
Yellow:88.2/96/176.4/192/352.8/384KHz
Green:DSD64/128/256
Recommended headphone impedance 16~300Ω    
Buttons and interfaces
Buttons input button*1+gain switch*1+output switch*1 USB USB B(data)
LINE IN RCA sockets LINE OUT RCA sockets
OPT IN TOSLINK COAX IN RCA sockets
BAL PO Standard 4.4mm port SE PO Standard 6.35 mm port
Power parameters
Power supply DC 12V/2A Battery capacity  /
Audio parameters
Line output performance parameters
Frequency response 20Hz~20KHz:±<0.4dB(UAC) Crosstalk ≥102dB (1kHz/10kΩ)
20Hz~20kHz:±<0.8dB(SPDIF  IN ) Noise floor <3μV(dbA)
20Hz~50KHz:±<2.2dB(UAC) SNR ≥116dB (dbA,UAC)
20Hz~50kHz:±<1.7dB(SPDIF  IN )
THD+N <0.0005%(1kHz/10kΩ/dbA) Output level          ≥2Vrms
Headphone output performance parameters(6.35mm)
Output power1 L+R≥1220mW+1220mW(32Ω /THD+N<1%) Output impedance <1Ω(32Ω) 
Crosstalk ≥77dB (1 kHz/32Ω)
Output power2 L+R≥140mW+140mW(300Ω / THD+N<1%) Noise floor <3.1μV(dbA,AUX  IN)
Frequency response 20Hz~20KHz:±<0.3dB(UAC) <4.4μV(dbA,UAC)
20Hz~20kHz:±<0.7dB(SPDIF  IN )
20Hz~50KHz:±<2.1dB(UAC) SNR ≥128dB (dbA,AUX IN)
≥120dB (dbA,UAC)
20Hz~50kHz:±<1.6dB(SPDIF  IN )
THD+N <0.0003% (1 kHz/32Ω/dbA) Peak output voltage ≥18.9Vpp
Balanced headphone output performance parameters(4.4mm)
Output power2 L+R≥2000mW+2000mW(32Ω /THD+N<1%) Output impedance <1Ω(32Ω)
Crosstalk ≥124dB(1 kHz/32Ω)
Output power3 L+R≥560mW+560mW(300Ω / THD+N<1%) Noise floor <5.1μV(dbA,AUX  IN)
Frequency response 20Hz~20KHz:±<0.3dB(UAC) <7.7μV(dbA,UAC)
20Hz~20kHz:±<0.7dB(SPDIF  IN )
20Hz~50KHz:±<2.1dB(UAC) SNR ≥128dB (dbA,AUX IN)
≥120dB (dbA,UAC)
20Hz~50kHz:±<1.6dB(SPDIF  IN )
THD+N <0.0003% (1 kHz/32Ω/dbA) Peak output voltage ≥37.7Vpp