FiiO K5 Pro DAC & Headphone Amplifier — 768kHz/32-bit USB DAC, DSD-capable, 6.35mm Output, Multi-Input

Overview

The FiiO K5 Pro blends a premium digital-to-analog converter with a robust headphone amplifier, designed for desktop and PC listening. Built around the ESS ES9038PRO 32-bit DAC and the XUF208 USB decoding chip, it handles high-resolution audio with clarity, while offering broad device compatibility—from laptops to smartphones.

High-Resolution Performance

At the heart of the K5 Pro is a 32-bit processing DAC paired with a high-precision USB decoder. This combination supports PCM up to 768 kHz and DSD playback, helping to reveal subtle textures in recordings and reduce listening fatigue during long sessions.

• ESS ES9038PRO DAC with 32-bit processing for detailed sound.
• XUF208 USB decoding with ultra-high sampling rates and DSD support.
• USB input enables connection to computers and mobile devices.

Flexible Connectivity

The K5 Pro welcomes a variety of sources. Coaxial, optical, and RCA line-in inputs support up to 192 kHz, while the USB input handles higher-resolution data streams for compatible gear.

• Coaxial/Optical/RCA line-in for diverse digital players.
• 192 kHz support on optical and coaxial paths.

Output Versatility

With 6.35mm (1/4 in.) headphone output and RCA line-out, the K5 Pro fits a wide range of listening setups. The RCA line-out can deliver up to 2 Vrms, making it suitable for active speakers or external amplifiers.

• 6.35mm headphone out for standard wired headphones.
• RCA line-out with adjustable signal up to 2 Vrms.
• Non-clip power performance: up to 1.5 W at 32 Ω; 20 Vpp at 300 Ω.

Impedance and Control

The K5 Pro is built to accommodate headphones with a variety of sensitivities. It offers precise ADC volume control in very fine increments and an output stage that keeps channel balance steady as you adjust volume.

• Handles low to high impedance headphones with ample headroom.
• Fine-grained ADC volume control for smooth listening adjustments.

Practical Use Cases

Use the K5 Pro to upgrade your home listening—from quiet evenings with close-back headphones to engaging sessions with powered speakers. Its transparency and dynamic range suit music lovers who appreciate nuance without clutter.

Build, Usability, and Delight

Designed for everyday use, the aluminum enclosure is compact and desk-friendly, with quiet operation and straightforward controls that fit into any setup.

• Compact desktop form factor with a clean, minimal look.
• Stable power delivery and silent operation during play.