Fiio K11 Compact Desktop DAC and Balanced Headphone Amplifier Hi-Res Silver

The FiiO K11 is a compact desktop DAC and headphone amplifier in silver, featuring a CS43198 DAC chip with USB-C, optical and coaxial inputs and 4.4mm balanced, 6.35mm, RCA line and coaxial outputs. It delivers up to 1400mW + 1400mW into 32 ohms in balanced mode and supports Hi-Res audio up to 384kHz/32-bit and DSD256 hardware decoding. It is part of FiiO's desktop DAC and amplifier range.

This listing is the silver version of the K11. The FiiO desktop DAC range also includes the FiiO K15 in silver and the FiiO K13 R2R compact desktop DAC.

Key specifications

• DAC chip: CS43198; main chip: GD32F303RET6
• Inputs: USB-C, optical, coaxial
• Outputs: 4.4mm balanced, 6.35mm, RCA line, coaxial
• Output power: up to 1400mW + 1400mW (balanced, 32 ohm load)
• Hi-Res support: up to 384kHz / 32-bit; DSD256 hardware decoding
• Gain: 3 levels with separate volume curves
• Power: external 12V switching power supply
• Dimensions: 147 x 133 x 32.3mm
• Colour: silver

FiiO K11 compact desktop DAC and headphone amplifier, silver

• Main chip: GD32F303RET6
• DAC chip: CS43198
• Inputs: USB-C, coaxial and optical
• Outputs: 4.4mm balanced, 6.35mm, RCA line and coaxial
• 3 gain levels with separate volume curves
• Specially designed audio circuit and power supply
• Hi-Res support: up to 384kHz / 32-bit
• DSD support: DSD256 hardware decoding
• Always-on display and adjustable RGB logo lighting
• Multi-function knob for volume adjustment and operation
• Output power: up to 1400mW + 1400mW (balanced, 32 ohm load)
• Driver-free operation
• Dimensions: 147 x 133 x 32.3mm

A variety of inputs and outputs

The K11 has USB-C, optical and coaxial inputs alongside 4.4mm balanced, 6.35mm, RCA line and coaxial outputs, covering the needs of a capable desktop audio setup.

When connected to a phone over USB for decoding, the K11 does not draw power from the phone's battery.

The coaxial input and output share the same physical connector. The coaxial output is only available in USB mode.

Large power output

Under a 32 ohm load, the K11 delivers up to 1400mW + 1400mW in balanced mode, giving it the headroom to drive a wide range of hi-fi earphones and headphones.

3 gain levels, 3 volume curves

Three separate gain levels each have their own volume curve, giving a better listening experience across different headphone types — from sensitive in-ear monitors to harder-to-drive over-ear headphones.

Specially designed audio circuit and power supply

The K11's slim chassis houses a purpose-built audio circuit supported by more than 16 low-noise LDOs for precise voltage stabilisation. An external 12V switching power supply provides a clean, stable power source for consistent audio quality.

Slim and stable

The slim aluminium alloy body keeps the K11 unobtrusive on a desk. A silicone anti-slip pad holds it firmly in place during use.

Clear always-on display

A custom high-contrast VA display shows sampling rate, volume, gain and output mode at a glance.

Adjustable RGB logo lighting

The FiiO logo is backlit with RGB lighting that indicates the sampling rate of the current audio source. Six LED strips work with a reflective film and light-diffusing body parts to keep the illumination uniform.

One multifunction volume knob

The volume knob handles power on/off, menu navigation, volume adjustment and output switching. Double-press it to toggle between LO and PO modes, making it straightforward to switch between headphones and other audio setups.

Driver-free mode for plug and play

In USB DAC mode, the K11 requires no driver on Windows 10 and above, and works with consoles including the PS5 and Nintendo Switch straight out of the box. A driver can be installed separately to unlock support for higher sampling rates.