Fiio K9 Desktop DAC and Headphone Amplifier

The Fiio K9 delivers the essential formula of the flagship K9 series at its most accessible: dual ESS ES9068AS DACs, dual THX AAA 788+ amplifier modules, 2000mW per channel of balanced power, Bluetooth 5.1 with LDAC, and full XLR connectivity in a substantial desktop chassis with an internal linear power supply.

Type and Technology

One ES9068AS DAC per channel feeds a fully balanced architecture with isolated digital and analog power rails and a partitioned circuit layout. Dual THX AAA 788+ modules provide clean, low distortion amplification, and the XMOS USB stage handles PCM to 768kHz/32-bit and native DSD512 with three selectable digital filters.

Sound Character

Clean, clear, and essentially neutral, with excellent transparency and a background that stays silent even with sensitive IEMs. It gives up remarkably little to its pricier siblings, earning a reputation as the value pick of the big K9 chassis.

Build and Features

An RGB ring around the 120 step volume knob indicates sample rate or Bluetooth codec, with three gain levels and app control for filters and Bluetooth EQ. Inputs cover USB-B, optical, coaxial, RCA line in, 4.4mm balanced line in, and Bluetooth; outputs include 6.35mm, 4.4mm, and XLR4 headphone jacks plus RCA and XLR3 balanced line outs, and an included stand allows vertical placement. If you prefer AKM conversion with USB-C, see the Fiio K9 AKM, or browse all desktop DACs in the Fiio collection.

Best For

Headphone desks that want flagship chassis build, THX amplification, XLR monitor feeds, and wireless convenience at the most sensible price in the K9 family.

What's in the Box

• Fiio K9
• AC power cord
• USB data cable
• Headphone plug adapter
• Desktop stand and feet pads
• Spare fuse and voltage selection card
• Quick start guide and warranty card

Specifications