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FiiO K7 Full Balanced HiFi DAC Headphone Amplifier AK4493S*2, XMOS XU208 PCM384kHz DSD256,USB/Optical/Coaxial/RCA Inputs, 6.35mm/4.4mm Output - Red
- The most competitive and cost-effective desktop balanced 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;
- Comes with versatile functions as well as robust output power- 1% THD+N under BAL output, 2000mW stable output power, which can drive most headphones, including full-size headphones;
- Supports input selections, 2 gain levels and 3 output levels, and features RGB indicator lights that can display the working state and differentiate sampling rates.
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Overview
Specs
Reviews
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(e. g. FiiO LD-LT1) to connect K7 and iPhone/iPad/iPod, and you can enjoy high-quality music by playing songs.
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.
THX AAA 788+ amplifier
Using the same THX AAA 788+ amplifiers as the K9 Pro, the K7 is capable of outputting 560mW into a 300 load at 1% distortion, and 2000mW into a 32 load at 1% distortion.
Dual AK4493SEQ
The left and right channels are each equipped with an efficient high-performance AK4493SEQ. With this DACs pleasant timbre, its rich and delicate overall sound will let you rediscover your music all over again.
XMOS XUF208
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.
Low-noise power supply
The K7 features a power design consisting of multiple independent stages, with a voltage of each stage being regulated by low-noise LDOs. Feeding this power design is an external 12V switching power supply
Variety of inputs and outputs
The K7 contains USB, optical, coaxial, and RCA inputs. Outputs are 6.35 mm single-ended and 4.4 mm balanced for pleasant listening no matter the headphones.
Two gain levels
The high and low hardware gain levels allow you to easily adjust the K7 to handle headphones of various impedances and sensitivities for a rich and consistent listening experience.
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(e. g. FiiO LD-LT1) to connect K7 and iPhone/iPad/iPod, and you can enjoy high-quality music by playing songs.
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.
THX AAA 788+ amplifier
Using the same THX AAA 788+ amplifiers as the K9 Pro, the K7 is capable of outputting 560mW into a 300 load at 1% distortion, and 2000mW into a 32 load at 1% distortion.
Dual AK4493SEQ
The left and right channels are each equipped with an efficient high-performance AK4493SEQ. With this DACs pleasant timbre, its rich and delicate overall sound will let you rediscover your music all over again.
XMOS XUF208
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.
Low-noise power supply
The K7 features a power design consisting of multiple independent stages, with a voltage of each stage being regulated by low-noise LDOs. Feeding this power design is an external 12V switching power supply
Variety of inputs and outputs
The K7 contains USB, optical, coaxial, and RCA inputs. Outputs are 6.35 mm single-ended and 4.4 mm balanced for pleasant listening no matter the headphones.
Two gain levels
The high and low hardware gain levels allow you to easily adjust the K7 to handle headphones of various impedances and sensitivities for a rich and consistent listening experience.
Warranty & Returns
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by B-IN Electronics Return Policy
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