Specifications:

MODEL FIIO K7BT

COLOUR Black

VOLUME SWITCH Potentiometer + ADC Sampling

USB INPUT: USB Type B Port

DUAL DAC DAC AKM AK4493S

USB CHIP XMOS XUF208

USB DRIVER: ASIO / KS / DS / WASAPI / DSD DOP (Native)

VOLUME CONTROL IC 2 x NJU72315

DRIVER OP AMP 2 x THX AAA 788

GAIN 0 / +6 / +10 dB

BLUETOOTH: Bluetooth 5.1

BLUETOOTH CHIP: QCC5124

BLUETOOTH CODECS LDAC, aptX HD, aptX Adaptive, aptX, aptX Low Latency, AAC and SBC

ANALOG INPUTS: 1 x RCA pair (Line In)

DIGITAL INPUTS: 1 x USB Type B port

1 x SPDIF digital coaxial input

1 x Toslink optical digital input

ANALOG OUTPUT: 1 x RCA pair (Pre Out)

HEADPHONE OUTPUT 6.35 mm Single Ended Jack

4.4 mm Mini Jack Balanced

DIGITAL INPUT RESOLUTION: USB Type B port: PCM 384 kHz / 32 Bits, DSD256

Coaxial Digital Input: 192 kHz / 24 Bits

Optical digital input: 96 kHz / 24 bits

DSD DSD64/128/256, native DSD

SAMPLING RATE INDICATION:

Blue: 44.1 kHz / 48 kHz

Yellow: 88.2/96/176.4/192/352.8/384 kHz

Green: DSD64 / DSD128 / DSD256

RECOMMENDED HEADPHONE IMPEDANCE: 16-300 Ω

LINE OUTPUT SOUND PARAMETERS

FREQUENCY RESPONSE:

20 Hz - 20,000 Hz ±<<0.4 dB (UAC).

20 Hz - 20,000 Hz ±<<0.8 dB (SPDIF IN)

20 Hz - 50,000 Hz ±<<2.2 dB (UAC)

20 Hz - 50.000 Hz ±<<1.7 dB (SPDIF IN)

TOTAL HARMONIC DISTORTION (THD+N): <0.0005% (1 kHz / 10 kΩ / dbA)

DIAPHONY ≥102 dB (1 kHz / 10 kΩ)

FLOOR LEVEL NOISE: <3 μV (dbA)

SIGNAL/ NOISE RATIO: ≥116 dB (dB A, UAC)

OUTPUT LEVEL: ≥2 Vrms

6.35 MM SINGLE ENDED HEADPHONE OUTPUT SOUND PARAMETERS

FREQUENCY RESPONSE: 20 Hz - 20,000 Hz ±<<0.3 dB (UAC)

20 Hz - 20,000 Hz ±<<0.7 dB (SPDIF IN)

20 Hz - 50.000 Hz ±<<2.1 dB (UAC)

20 Hz - 50,000 Hz ±<<1.6 dB (SPDIF IN)

OUTPUT POWER 1: L+R≥ 1220mW + 1220mW (32Ω / THD+N<1%)

OUTPUT POWER 2: L+R≥ 140mW + 140mW (300Ω / THD+N<1%)

TOTAL HARMONIC DISTORTION + NOISE (THD+N): <0.0003% (1 kHz / 32Ω / dBA)

OUTPUT IMPEDANCE: <1Ω (32Ω)

DIAPHONY ≥77 dB (1kHz / 32Ω)

NOISE FLOOR LEVEL:

<3.1 μV (dbA, AUX IN).

<4.4 μV (dbA，UAC)

SIGNAL-TO-NOISE RATIO:

≥128 dB (dbA, AUX IN).

≥120 dB (dbA, UAC)

PEAK OUTPUT LEVEL: ≥18.9 Vpp

BALANCED 4.4 MM HEADPHONE OUTPUT SOUND PARAMETERS

FREQUENCY RESPONSE: 20 Hz - 20,000 Hz ±<<0.3 dB (UAC)

20 Hz - 20,000 Hz ±<<0.7 dB (SPDIF IN)

20 Hz - 50.000 Hz ±<<2.1 dB (UAC)

20 Hz - 50.000 Hz ±<<1.6 dB (SPDIF IN)

OUTPUT POWER 2

L+R≥ 2000mW + 2000mW (32Ω / THD+N<1%)

OUTPUT POWER 3

L+R≥ 560mW + 560mW (300Ω / THD+N<1%)

TOTAL HARMONIC DISTORTION + NOISE (THD+N)

<0.0003% (1 kHz / 32Ω / dbA)

OUTPUT IMPEDANCE: <1Ω (32Ω）

DIAPHONY ≥124 dB (1kHz / 32Ω)

NOISE FLOOR LEVEL

<5.1 μV (dbA, AUX IN)

<7.7 μV (dbA, UAC）

SIGNAL-TO-NOISE RATIO

≥128 dB (dbA, AUX IN)

≥120 dB (dbA, UAC)

PEAK OUTPUT LEVEL: ≥37.7 Vpp

ACCESSORIES: USB cable

External power supply

Rubber feet

Quick Guide

Warranty

3.5 mm to 6.35 mm mini jack adapter

DIMENSIONS: 55 mm (H) x 120 mm (W) x 146.5 mm (D)

WEIGHT: 610 g