FiiO K7 Desktop AMP/DAC - Parameters
General specifications |
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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 |
Recommended headphone impedance |
16~300Ω |
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Buttons and interfaces |
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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 |
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Power supply |
DC 12V/2A |
Battery capacity |
/ |
Audio parameters |
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Line output performance parameters |
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Frequency response |
20Hz~20KHz:±<0.4dB(UAC) |
Crosstalk |
≥102dB (1kHz/10kΩ) |
20Hz~20kHz:±<0.8dB(SPDIF IN ) |
Noise floor |
<3μV(dbA) |
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20Hz~50KHz:±<2.2dB(UAC) |
SNR |
≥116dB (dbA,UAC) |
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20Hz~50kHz:±<1.7dB(SPDIF IN ) |
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THD+N |
<0.0005%(1kHz/10kΩ/dbA) |
Output level |
≥2Vrms |
Headphone output performance parameters(6.35mm) |
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Output power1 |
L+R≥1220mW+1220mW(32Ω /THD+N<1%) |
Output impedance |
<1Ω(32Ω) |
Crosstalk |
≥77dB (1 kHz/32Ω) |
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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) |
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20Hz~20kHz:±<0.7dB(SPDIF IN ) |
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20Hz~50KHz:±<2.1dB(UAC) |
SNR |
≥128dB (dbA,AUX IN) |
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20Hz~50kHz:±<1.6dB(SPDIF IN ) |
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THD+N |
<0.0003% (1 kHz/32Ω/dbA) |
Peak output voltage |
≥18.9Vpp |
Balanced headphone output performance parameters(4.4mm) |
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Output power2 |
L+R≥2000mW+2000mW(32Ω /THD+N<1%) |
Output impedance |
<1Ω(32Ω) |
Crosstalk |
≥124dB(1 kHz/32Ω) |
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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) |
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20Hz~20kHz:±<0.7dB(SPDIF IN ) |
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20Hz~50KHz:±<2.1dB(UAC) |
SNR |
≥128dB (dbA,AUX IN) |
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20Hz~50kHz:±<1.6dB(SPDIF IN ) |
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THD+N |
<0.0003% (1 kHz/32Ω/dbA) |
Peak output voltage |
≥37.7Vpp |