FiiO K9 Pro ESS – Flagship Desktop DAC, Amp & Streamer

The FiiO K9 Pro ESS is an all-in-one desktop audio powerhouse, combining flagship dual ES9038PRO DACs, THX AAA‑788+ amplification, full network streaming, Bluetooth, and stacked I/O—all in a sleek, compact chassis. Ideal for audiophiles, creators, and desktop setups demanding top-tier performance.

Key Features

• Dual ES9038PRO DACs: Eight-channel balanced DAC chips deliver ultra-low distortion and pristine audio clarity
• THX AAA‑788+ amplification: Linear toroidal transformer with THX amps provides 2.1 W balanced and 1.1 W single-ended into 32 Ω
• Comprehensive I/O: USB‑B/C, optical, coaxial, Bluetooth 5.1 (LDAC/aptX Adaptive), RCA/XLR outputs, 4.4 mm/6.35 mm/XLR headphone jacks
• MQA renderer & app control: Support for full MQA decoding and Bluetooth-enabled FiiO Control app for filters, volume, and PB presets
• Precise clock & analog/digital separation: Dual femtosecond clocks with partitioned analog/digital sections eliminate jitter and preserve audio fidelity
• Compact yet robust: CNC aluminum body with top vents and sturdy build, paired with a vertical stand option

Customer Benefits

With the K9 Pro ESS, desktop setups gain a flagship-quality hub featuring elite DAC conversion, studio-grade amplification, and flexible streaming—all packed into one compact device. Gain sonic purity, power, connectivity, and control without needing multiple units.

Quick Specs

• Dimensions: 200 × 224.5 × 72 mm
• Weight: ~2,750 g
• DAC: Dual ES9038PRO, PCM up to 384 kHz, Native DSD256
• Amplifier Power: 2.1 W balanced / 1.1 W SE @ 32 Ω; 281 mW @ 300 Ω
• SNR: ≥129 dB (balanced), THD+N ≤0.00025%
• Bluetooth: 5.1 with LDAC, aptX Adaptive/HD/LL, AAC, SBC
• Clocking: Dual femtosecond + PLL clocks

What’s in the Box

• K9 Pro ESS unit
• IEC power cable with voltage selector
• Bluetooth antenna
• USB-B & USB-C cables
• Optical & coaxial cables
• Vertical stand & rubber feet
• 6.35 mm headphone adapter & fuse
• Quick-start guide & warranty details

Use Cases / Ideal For

Perfect as a central audio hub for desktop listening, gaming, content creation, or studio work. Ideal for users who need flagship-grade quality, streaming flexibility, and streamlined setup.

Compatibility

Driver-free support for Windows, macOS, Linux via USB. Bluetooth streaming and app control on iOS/Android. Works seamlessly with headphones, studio monitors, DACs, and full systems.

Pros & Cons

✅ Pros:

• Elite DAC and amp performance in one compact unit
• Wide codec support and high-power output
• Robust I/O & flexible control via app
• Sturdy build with linear power and cooling vents

⚠️ Cons:

• Larger and heavier than entry-level desktop units
• No touchscreen—control via physical buttons and app
• Vertical stand optional; desk space still needed

The FiiO K9 Pro ESS sets a new benchmark for unified desktop audio. With supreme DAC conversion, dynamic amplification, and versatile connectivity, it’s the ultimate centerpiece for anyone serious about sound quality–ready now at Soundium.