FiiO K3

Dual headphone jacks

Being optimized for indoor desktop use, the new K3 is equipped with both 3.5mm single-ended and 2.5mm balanced headphone jacks. Both outputs have audio jack detection, which means that when headphones are inserted into the balanced out, balanced boost automatically kicks in resulting in about a 50% output power increase compared to the single-ended out.

Line out

The 3.5mm line out is driven directly by the OPA1612 op-amp, to ensure as little sound quality reduction as possible. The line out output is also adjustable with maximum power output up to 2Vrms, to ensure compatibility with a wide variety of active speakers and external amplifiers.

PS: When using the line out, please disconnect any headphones

Reliable USB Type-C input interface

The new K3 adopts the modern USB Type-C input interface for a more reliable and stable connection, including that of power. However, care to ensure an uncompromised power supply doesn't stop there – the new K3 implements overvoltage protection (OVP) and a double-filter circuit to ensure power supply stability, while the digital and analog audio circuits each get their own power supply to greatly reduce crosstalk.

Coaxial and Optical digital outs

The XMOS USB receiver chip in the new K3 directly converts any USB audio input to digital signals output via the coaxial and optical connectors, allowing you to connect to speaker systems, amplifiers, or other external decoders.

* The volume knob does not control digital output volume. The New K3 headphone amps can output digital audio signals up to 192kHz and DSD64 over DoP. Please adjust the settings of the device you are connecting the NEW K3 to if the device does not support the digitally output format.

Different connection options for your choice

1. Connect it to a desktop computer when you at home or office.

2. Use the driverless 1.0 mode for your business trips.

3. Make it a digital turntable connected to an external decoder, you would love it.

4. Connect it to a speaker, using the New K3 amplifier as a DAC. You would know how HiFi it is

Gain and bass switches

The switch for high and low gain ensures that you can use the new K3 with a wide variety of headphones, and that your listening volume needs are covered. The hardware bass boost switch enhances the dynamic range of the lower frequencies and gives them some extra punch to really make your songs, games, and movies come to life.

Two modes for many situations

Sometimes, you may not have access to a device that can connect to the new K3 via USB Audio Class 2. In these situations, you can go to USB Audio Class 1 mode with just the flick of a switch.

· In high-performance applications, you can use the 2.0 mode to enjoy up to 384kHz/DSD 256 decoding.

· For certain situations, you can use the 1.0 mode to enjoy up to 96kHz/24-bit PCM audio without needing any drivers.

*Using the 2.0 mode requires downloading and installing the FiiO USB driver

*After switching USB modes, you need to either turn the new K3 off and on, or unplug and plug in the USB cable.

Accessories Included

1. NEW K3*1

2. USB Type C cable*1

3. Manual*1

4. Card*1