Fun - Fiio K7 / K 7 Balanced Hi-Res Thx Desktop Dac And Headphone

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FEATURES
◉ THX AAA 788+ amplifiers
◉ Dual AK4493S DAC chips
◉ Truly balanced DAC/Amp
◉ Multiple intelligence protection systems
◉ RGB status indicators
◉ 2 gain levels
◉ 3 output modes
◉ Variety of inputs and outputs
◉ All-aluminum alloy body
◉ Classic knobs
◉ Lightweight, all-in-one device

SPECIFICATIONS
•DAC: AK4493SEQ x2
•Amplifier: Dual THX AAA 788+
•Outputs: 6.35mm/4.4mm
•Inputs: USB, optical, coaxial, RCA
•Output power 2: >1220mW (32Ω, single-ended/THD+N <1%)
•SNR: >120dB (A-weighted, UAC)
•Noise floor:
PO<4.4 μV (A-weighted, UAC)
BAL<7.7μV (A-weighted, UAC)
Output impedance: <1Ω (32Ω load)
•Dimensions:
About 120mm x 168mm x 55mm

K7 FAQ
How to use the K7 as a USB DAC for mobile phones?
K7 does not have a battery, it is powered by a built-in linear power supply, you can purchase an OTG cable to connect to an Android phone, an iPhone or a player.

Android phone
K7 input setting: K7 [INPUT] switch to USB gear
K7 output setting: switch to the corresponding output port according to the interface used, switch to [PO] on the front panel headphone out, switch to [PRE] or [LO] on the rear panel line-out.
Connect the phone and K7 via USB C to USB B data cable (such as FiiO LD-TC1)
[Note] If there is no sound after you connect, you need to pay attention to the following points:
Mobile phone playback software settings, if there is a USB output setting that needs to be turned on, some devices only have sound when the USB output is turned off;
Confirm that USB debugging is enabled in the developer mode of the mobile phone;
You need to turn on USB debugging on the mobile phone, turn on "Developer Options", and then turn on the "USB debugging" or "OTG" function;
Confirm that the adapter cable supports the OTG function, and whether the direction of the cable is reversed;

IPhone/iPad
You need to purchase a Lightning to USB B data cable which supports OTG function

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