FiiO K7 Desktop AMP/DAC - Parameters

General specifications

Name / Model No. 

K7

Hardware solution 

DAC: AK4493S*2 , USB: XMOS XUF208 ,

Voume IC:NJU72315 * 2,

 AMP:THX AAA 788+ * 2

Color 

Black

Volume Scroll

Potentiometer+ADC Sampling

Weight

≈610g

FiiO Control

Unsupported

Gain

L/H

Firmware upgrade

XMOS can be upgraded via USB 

Maximum supported sampling rate

PCM 384kHz-32bit/DSD256(USB DAC)

PCM 192kHz-24bit(COAX)

PCM 96KHz-24bit(OPT)

Sampling rate indication

Blue:44.1KHz/48KHz
Yellow:88.2/96/176.4/192/352.8/384KHz
Green:DSD64/128/256

Recommended headphone impedance

16~300Ω

 

 

Buttons and interfaces

Buttons

input button*1+gain switch*1+output switch*1

USB

USB B(data)

LINE IN

RCA sockets

LINE OUT

RCA sockets

OPT IN

TOSLINK

COAX IN

RCA sockets

BAL PO

Standard 4.4mm port

SE PO

Standard 6.35 mm port

Power parameters

Power supply

DC 12V/2A

Battery capacity 

/

Audio parameters

Line output performance parameters

Frequency response

20Hz~20KHz:±<0.4dB(UAC)

Crosstalk

≥102dB (1kHz/10kΩ)

20Hz~20kHz:±<0.8dB(SPDIF  IN )

Noise floor

<3μV(dbA)

20Hz~50KHz:±<2.2dB(UAC)

SNR

≥116dB (dbA,UAC)

20Hz~50kHz:±<1.7dB(SPDIF  IN )

THD+N

<0.0005%(1kHz/10kΩ/dbA)

Output level         

≥2Vrms

Headphone output performance parameters(6.35mm)

Output power1

L+R≥1220mW+1220mW(32Ω /THD+N<1%)

Output impedance

<1Ω(32Ω) 

Crosstalk

≥77dB (1 kHz/32Ω)

Output power2

L+R≥140mW+140mW(300Ω / THD+N<1%)

Noise floor

<3.1μV(dbA,AUX  IN)

Frequency response

20Hz~20KHz:±<0.3dB(UAC)

<4.4μV(dbA,UAC)

20Hz~20kHz:±<0.7dB(SPDIF  IN )

20Hz~50KHz:±<2.1dB(UAC)

SNR

≥128dB (dbA,AUX IN)
≥120dB (dbA,UAC)

20Hz~50kHz:±<1.6dB(SPDIF  IN )

THD+N

<0.0003% (1 kHz/32Ω/dbA)

Peak output voltage

≥18.9Vpp

Balanced headphone output performance parameters(4.4mm)

Output power2

L+R≥2000mW+2000mW(32Ω /THD+N<1%)

Output impedance

<1Ω(32Ω)

Crosstalk

≥124dB(1 kHz/32Ω)

Output power3

L+R≥560mW+560mW(300Ω / THD+N<1%)

Noise floor

<5.1μV(dbA,AUX  IN)

Frequency response

20Hz~20KHz:±<0.3dB(UAC)

<7.7μV(dbA,UAC)

20Hz~20kHz:±<0.7dB(SPDIF  IN )

20Hz~50KHz:±<2.1dB(UAC)

SNR

≥128dB (dbA,AUX IN)
≥120dB (dbA,UAC)

20Hz~50kHz:±<1.6dB(SPDIF  IN )

THD+N

<0.0003% (1 kHz/32Ω/dbA)

Peak output voltage

≥37.7Vpp

 

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