Great sounding and extremely versatile DAC and Headphone amp from Fiio. This allows you to connect a home computer, TV or other digital source to the unit and either feed your home stereo and/or a pair of headphones to give you crystal clear sound quality.

This has a Balanced input for Headphones and features a THX 788+ amp which will drive most headphones with ease. Dual AKM DAC chips make this unit stand out nicely above many others at a similar price point.

We’ve had a good listen to this unit with the Sennheiser HD660 and it’s definitely a winner. Very impressive especially for the price!!!

K7 Specifications

• Maximum supported sampling rate: PCM 384kHz-32bit/DSD256（USB DAC）/ PCM 192kHz-24bit（COAX）/ PCM 96KHz-24bit（OPT）

• Recommended headphone impedance: 16~300Ω

• Line Out Frequency Response:
  20Hz~20KHz：±＜0.4dB（UAC)
  20Hz~20kHz：±＜0.8dB(SPDIF  IN )
  20Hz~50KHz：±＜2.2dB（UAC)
  20Hz~50kHz：±＜1.7dB(SPDIF  IN )

• Line Out THD+N:＜0.0005%(1kHz/10kΩ/dbA)

• Line Out Crosstalk: ≥102dB (1kHz/10kΩ)

• Line Out Noise floor＜3μV（dbA）

• Line Out SNR: ≥116dB (dbA，UAC)

• Line Out Output level: ≥2Vrms

• Headphone Out: Output power 1 L+R≥1220mW+1220mW（32Ω /THD+N＜1%)

• Headphone Out: Output power 2 L+R≥140mW+140mW（300Ω / THD+N＜1%)

• Headphone Out Frequency response:
  20Hz~20KHz：±＜0.3dB（UAC)
  20Hz~20kHz：±＜0.7dB(SPDIF  IN )
  20Hz~50KHz：±＜2.1dB（UAC)
  20Hz~50kHz：±＜1.6dB(SPDIF  IN )

• Headphone Out THD+N:＜0.0003% (1 kHz/32Ω/dbA)

• Headphone Out Output impedance:＜1Ω（32Ω）

• Headphone Out Crosstalk≥77dB (1 kHz/32Ω)

• Headphone Out Noise floor: ＜3.1μV（dbA，AUX  IN), ＜4.4μV（dbA，UAC）

• Headphone out SNR: ≥128dB (dbA，AUX IN), ≥120dB (dbA，UAC）

• Peak output voltage: ≥18.9Vpp