THX AAA 788+ Amplifiers Technology, Using the same THX AAA 788+ amplifiers as the K9 Pro, the K7 is capable of outputting 560mW into a 300Ω load at 1%
Fiio K7 Review - Major HiFi
FiiO K7 and K5 Pro ESS Desktop Headphone DAC/Amp Hands-on Review: Impressive Affordable Audio Power
FiiO K7/K7BT Balanced HiFi DAC Headphone Amplifier AK4493S*2, XMOS XU208 PCM384k
FiiO K7 - Reviews Headphone Reviews and Discussion
Just upgraded to the fiio k7 and love it! : r/headphones
The most competitive and cost-effective desktop balanced Bluetooth DAC/Amp within the 300-USD range. Adopts the six-stage audio circuit as in FiiOs high-end devices, and features 2 AMKs latest AK4493SEQ DACs and dual THX AAA 788+ amps. Supports multiple outputs- 4.4mm balanced out, 6.35/3.5mm single-ended out, as well as multiple inputs- USB, optical, coaxial, and AUX in.
FiiO K7 Desktop USB DAC and Headphone Amplifier Red Volume Control, 32 Bit/384KHz, Coaxial SPDIF Optical, 1/4 4.4 mm RCA K7RED
FiiO K7 DAC & Headphone Amplifier Review-FIIO---BORN FOR MUSIC
BUDGET, BALANCED, BETTER! - FiiO k7 Review
fiio-k7-bt-eight - Headfonia Reviews
FiiO K7 Desktop DAC and Amplifier : Electronics
FiiO K7 Review - Headfonia Reviews
FiiO K7 review: This outstanding DAC drives headphones, too
Fiio K7 THX Balanced Desktop Amplifier
Fiio K7 Full Balanced Desktop Amp/DAC Review: Not Just for Audiophiles