FiiO K9 Desktop Headphone Amplifier Metal Design

Description

Product Overview

The FiiO K9 is a modern desktop headphone amplifier designed for adult audiophiles who demand precision and power. Built from a blend of metal and high‑quality plastic, the unit houses two ES9068AS DACs—one per channel—and a THX AAA 788+ amplifier capable of delivering up to 780 mW into 300 Ω and 2 W into 32 Ω loads. Bluetooth 5.1 with QCC5124 chipset supports LDAC, aptX Adaptive, aptX HD and AAC, while a detachable USB‑C cable provides wired flexibility. The touch‑controlled volume and FiiO Control app give you instant access to seven preset PEQ tuning styles.

Usage

Ideal for a home audio setup, a professional studio, or a quiet office, the K9 excels in environments where high‑resolution streaming and critical listening are required. Pair it with over‑ear headphones for immersive music sessions, or connect to desktop speakers for a compact hi‑fi solution. The 10‑meter Bluetooth range lets you control playback from across the room, while the detachable cable ensures a clean, clutter‑free workspace.

Why Choose Us

FiiO combines rigorous engineering with premium components: isolated power supplies keep digital and analog sections free from interference, and the THX‑certified amplifier guarantees low distortion across the power spectrum. Each unit undergoes strict quality testing, and the included FiiO Control app provides software updates and fine‑tuning options that keep the K9 future‑proof.

Key Features

• Dual ES9068AS DACs for pristine left‑right channel separation
• THX AAA 788+ amplifier delivering up to 2 W into 32 Ω
• Bluetooth 5.1 with LDAC, aptX Adaptive, aptX HD support
• Detachable USB‑C cable and touch volume control
• Modern metal‑plastic chassis with app‑based PEQ presets

FAQ

Can I use the K9 with any headphones?

Yes, the K9’s 32 Ω‑300 Ω power range accommodates most over‑ear and high‑impedance headphones, delivering clean, distortion‑free sound.

What Bluetooth codecs are supported?

The unit supports LDAC, aptX Adaptive, aptX HD, aptX, AAC and SBC, ensuring high‑resolution wireless playback from compatible devices.

Is the power supply isolated?

Both the digital and analog sections have separate power regulation, minimizing noise and preserving audio fidelity.

How do I update the firmware?

Firmware updates are delivered through the FiiO Control app; simply connect the K9 via USB‑C and follow the in‑app instructions.

What is the warranty period?

FiiO provides a 12‑month limited warranty covering manufacturing defects and includes free technical support.