FIIO K7 BT DAC Headphone Amplifier 2x AK4493S THX AAA-788+ 32bit 384kHz DSD256 Bluetooth 5.1 LDAC AptX HD

FIIO K5 PRO ESS DAC Headphone Amplifier ES9038Q2M XMOS XUF208 32bit 768kHz DSD512
FiiO's K7 BT is a high performance desktop DAC and Headphone Amplifier combo, demonstrating an exemplary design for an audio reproduction marked by great transparency, richness and precision. It embeds a Bluetooth QCC5124 chip allowing the support of high definition formats, all with a low latency transmission. 

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2 Years warranty
 
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FIIO K7 BT

DAC 2x AK4493S Headphone Amplifier THX AAA-788+ 32bit 384kHz DSD256 Bluetooth 5.1 LDAC AptX HD

FIIO K7 BT DAC Headphone Amplifier 2x AK4493S THX AAA-788+ 32bit 768kHz DSD512 Bluetooth 5.1 LDAC AptX HD

FiiO's K7 BT is a high performance desktop DAC and Headphone Amplifier combo, demonstrating an exemplary design for an audio reproduction marked by great transparency, richness and precision. It embeds a Bluetooth QCC5124 chip allowing the support of high definition formats, all with a low latency transmission. 

FIIO K7 BT DAC Headphone Amplifier 2x AK4493S THX AAA-788+ 32bit 768kHz DSD512 Bluetooth 5.1 LDAC AptX HD

High-end balanced amplification

The K7 BT uses the same THX AAA 788+ amplifier as the K9 Pro. It is capable of outputting up to 560mW at 300Ω for only 1% distortion and up to 2000mW at 32Ω for only 1% distortion. 

FIIO K7 BT DAC 2x AK4493S Amplificateur Casque THX AAA-788+ 32bit 768kHz DSD512 Bluetooth 5.1 LDAC AptX HD
FIIO K7 BT DAC 2x AK4493S Amplificateur Casque THX AAA-788+ 32bit 768kHz DSD512 Bluetooth 5.1 LDAC AptX HD

Dual DAC

Each channel is equipped with its own DAC chip AK4493SEQ producing a rich and delicate sound with a pleasant timbre. 

Advanced decoding capabilities

The XMOS XUF208 chip uses a dual clock management system to handle a multitude of different audio formats.

FIIO K7 BT DAC 2x AK4493S Amplificateur Casque THX AAA-788+ 32bit 768kHz DSD512 Bluetooth 5.1 LDAC AptX HD

A real personality

The K7 BT's massive, beautifully integrated metal knob on the front panel provides comfortable control of the volume level. The circular LED indicator surrounding this volume knob lights up in different colors depending on the sample rate of the file being played, while complementing the sobriety of the case with a touch of color.

  • Blue light : 48kHz and below
  • Yellow light : Above 48kHz
  • Green light : DSD
FIIO K7 BT DAC 2x AK4493S Amplificateur Casque THX AAA-788+ 32bit 768kHz DSD512 Bluetooth 5.1 LDAC AptX HD
FIIO K7 BT DAC 2x AK4493S Amplificateur Casque THX AAA-788+ 32bit 768kHz DSD512 Bluetooth 5.1 LDAC AptX HD

Hi-RES Wireless certification

The Bluetooth QCC5124 chip supports high definition formats such as LDAC, aptXHD and aptX adaptive. The bluetooth function will make you enjoy an excellent sound experience thanks to its low latency and accessible formats.

In addition, you can via the application FIIO update the software bluetooth to improve your experience.

Smart protection systems

Your K7 BT is protected from overheating, overloading and also has DC power protection to ensure the best listening experience over the long term.

xxxFIIO K7 BT DAC 2x AK4493S Amplificateur Casque THX AAA-788+ 32bit 768kHz DSD512 Bluetooth 5.1 LDAC AptX HD

Many possibilities thanks to a complete connectivity

FIIO K7 BT DAC 2x AK4493S Amplificateur Casque THX AAA-788+ 32bit 768kHz DSD512 Bluetooth 5.1 LDAC AptX HD
1Source indicator
2Jack 6.35mm Output
3Source selection
4Gain
5Output selection
6Volume/selection button
7Jack 4.4mm Balanced Output
8Bluetooth Antenna
9Stereo RCA input 
10Pre-out RCA output
11Coaxial input
12Optical Toslink input
13USB-B input
14DC 12V load

Volume control and gain adjustment

The adjustment of the gain level is done simply thanks to a switch on the front panel of the K7 BT. For the gain, the device offers 2 settings. This setting allows the K7 BT to be used with a large majority of headphones and earphones on the market for a comfortable volume listening. Concerning the volume, the K7 BT has 112 adjustable steps thanks to the knob on its front panel.  

FIIO K7 BT DAC 2x AK4493S Amplificateur Casque THX AAA-788+ 32bit 768kHz DSD512 Bluetooth 5.1 LDAC AptX HD

Volume control on ADC

The K7 BT incorporates an ADC, allowing it to take advantage of an RCA line input with adjustable volume level. It reconstructs the analog volume curve to allow for smooth and accurate adjustment while eliminating unwanted noise and potential balance problems. This design also allows many different headphone models with different sensitivities to be used with the K7 BT.

FiiO K5 Pro DAC Amplificateur Casque ES9038Q2M XMOS XUF208 32bit 768kHz DSD512

Technical characteristics

SpEcifications
Product typeDAC
Headphone amplifier
DAC chips2x AK4493SEQ
USB InterfaceXMOS XUF208
Bluetooth ChipsQCC5124
Inputs1x USB-B
1x Coaxial SPDIF
1x Optical Toslink
1x Stereo RCA line input

Bluetooth
Outputs1x Stereo RCA line output
1x 4.4mm balanced headphone output
1x 6.35mm headphone output
Bluetooth codecs supportedLDAC, aptX, aptX Adaptative, aptX HD, aptX LL, AAC, SBC
Supported sampling ratesPCM 32bit 384kHz
DSD256
AmplificationTHX AAA 788+ Amp
Adjustable gain
Recommended headphone impedance16-300Ω
Headphone output powerL+R 2000mW + 2000mW (32Ω, balanced headphone output, THD+N < 1%)

L+R 1220mW + 1220mW (32Ω, unbalanced output, THD+N < 1%)
SNRPO ≥ 123dB (A-weighted, UAC)
Balanced output ≥ 120 db (A-weighted, UAC)
Background noisePO < 4.4 uV (A-weighted, UAC)
Balanced output < 7.7 uV (A-weighted, UAC)
Output impedance< 1 Ohm (32 Ohm load)
General
Dimensions120 x 168 x 55mm
Weight620g
ColorBlack
 
Data sheet
InputUSB
InputSPDIF
InputBluetooth
InputRCA
InputOptical
OutputRCA
OutputJack 4.4mm
OutputJack 6.35mm
DAC / ADC ChipAK4493S
Max sampling rate384kHz
Max sampling rateDSD256
ColorBlack
ClassClass D / T
NetworkingNo
Remote ControlNo
 
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Average votes
4.0 / 5
2 reviews
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Note :
 5/5
Date :
Volume résolu
Le problème de volume mentionné précedemment était du à un réglage du Bluetooth sur Android. Il a suffit de désactiver le "controle de volume absolu" dans les options bluetooth, pour retrouver un niveau normal. La connexion en USB n'est pas affectée. Je suis pleinement satisfait et corrige ma note à la hausse.
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This review has been posted for FIIO K7 BT DAC Headphone Amplifier 2x AK4493S THX AAA-788+ 32bit 384kHz DSD256 Bluetooth 5.1 LDAC AptX HD
Note :
 3/5
Date :
Volume trop faible en Line Out / Pre-amp
Dommage, car le son me semble bon. Le réglage du gain H/L n'a aucun effect audible dans la configuration testée.

Systeme testé:
- Input: Bluetooth (Kobuz Hi-res + LDAC)
- Output: Line Out et Pre
- Amp: Audiophonics MPA S250NC (2x250W !)
- Speakers: ELAC DBR62

Autre critique: ces petits leviers "mécaniques" de sélection OUT / Gain m'avaient attiré avant l'achat mais ils sont en fait un peu ridicules car tout petits et pas tres pratiques.

Bref, deux étoiles en moins qui ne touchent pas au coeur du travail (DAC), que je suis bien incapable de juger. Peut-etre que c'est un excellent ampli casque...
 (0)
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This review has been posted for FIIO K7 BT DAC Headphone Amplifier 2x AK4493S THX AAA-788+ 32bit 384kHz DSD256 Bluetooth 5.1 LDAC AptX HD
 
FIIO K7 BT DAC Headphone Amplifier 2x AK4493S THX AAA-788+ 32bit 384kHz DSD256 Bluetooth 5.1 LDAC AptX HD
FiiO's K7 BT is a high performance&nbsp; desktop DAC and Headphone Amplifier combo , demonstrating an exemplary design for an audio...

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