FiiO K5 Pro ESS, Desktop DAC and Amplifier: High-Fidelity USB DAC/AMP (K5 Pro ESS)

FiiO K5 Pro AK4493EQ | 768K/32Bit and DSD decoding Desktop DAC and Amplifier for Home and Computer(6.35mm (1/4 in.) Headphone Out/RCA line-Out)

AK4493 DAC chips for the ultimate in decoding performance, supporting up to 768kHz/32bit and native DSD
Equipped with XMOS XUF208 USB receiver chip+AKM AK4493 DAC+ Op-amps OPA1642 + flagship TI TPA6120
Extremely powerful headphone amplification for a total power output of up to 1.5 W under a 32Ω load, and up to 20Vpp at 300Ω
Multiple interfaces- headphone jacks(6.35mm) /RCA outputs+ USB Coaxial, Optical, and Line-in inputs
More accurate ADC volume control +Gain and bass switches


AKM AK4493EQ DAC chips
The K5 Pro is equipped with AKM’s AK4493EQ DAC chips - known for its smooth, pleasant yet detailed sound due to its high signal-to-noise ratio and low distortion. Audio up to 768kHz/32 bit sampling rates and bit-depths are supported as well as native DSD

XMOS USB Audio
We elected to use the XMOS XUF208 microcontroller for its stability, powerful functionality, and its proven reliability.

Utterly precise volume control
When the NJRC NW1195A analog volume adjustment chip is paired with the combination of the flagship TI TPA6120 op-amp and the OPA1642 JEFT op-amp,the K5 Pro provides wonderfully smooth,yet high resolution sound.

ADC volume control
The use of ADC volume control can not only eliminate channel volume imbalances, but also allows the user to smoothly adjust the volume to a more accurate and finer degree to boost headphones of all kinds of sensitivity for a variety of listening needs.

Gain switches
With the K5 Pro, you can switch between low ,medium and high gain levels (depending on how much driving power your headphone needs) .

Unique RGB status lights
With the K5 Pro,the RGB light indicator that surrounds the volume knob lights up with different colors,you can quickly identify the current sample rate.

48kHz and Below:Blue light flashing
48kHz and above: Yellow light flashing
DSD: Green light flashing

Getting precise with toggle switches
Both the input selection(USB DAC/SPDIF IN/LINE IN) and gain(Low 0db/Medium+6db/High+10db)so that it's easily for you to control your music

Versatility from multiple interfaces
Different connection options for different scenarios: Coaxial/Optical/RCA line-in +6.34mm(1/4 in.) headphone outputs/RCA line-out

Extremely Powerful headphone amplification
With the K5 Pro we have redesigned and further optimized the audio circuit to squeeze out every last drop of potential from the TPA6120, for a total power output of up to 1.5W under a 32ohm load and up to 20Vpp at 300ohm.

Important:
The main difference between the previous K5 Pro and K5 Pro ESS is that the new one employs the flagship portable ESS DAC, the ES9038Q2M with more outstanding performance and richer audio details. Compared to the last gen, the distortion has reduced by 50%, the crosstalk for LO has increased by 6dB with greater channel separation, and the dynamic range has increased by 3dB.