K7/K7 BT HiFi Balanced DAC & Headphone Amplifier

The Ultimate Desktop Audio Solution for Audiophiles and Professionals

The FiiO K7/K7 BT is a high-performance desktop DAC and headphone amplifier that combines cutting-edge audio technology with elegant design. Engineered for audiophiles, music producers, and critical listeners, it delivers unmatched sound clarity, power, and versatility in a compact, user-friendly package.

1. Unrivaled Audio Performance

THX AAA 788+ Amplification Technology

• Industry-Leading Amplification:
  • 2000mW @ 32Ω (Balanced) – Drives even the most demanding headphones with ease.
  • 560mW @ 300Ω (Balanced) – Perfect for high-impedance audiophile headphones.
  • Ultra-Low Distortion (<0.0001%) – Ensures pristine, uncolored sound reproduction.
• True Balanced Architecture:
  • Six-stage audio circuit minimizes crosstalk and noise for cleaner, more dynamic sound.
  • Dedicated left/right channel amplification for superior stereo imaging.

Dual AK4493S DACs – Studio-Grade Decoding

• Supports High-Resolution Audio:
  • PCM up to 32Bit/384kHz
  • Native DSD256 (Direct Stream Digital)
• Advanced Digital Processing:
  • XMOS XU208 USB controller for bit-perfect decoding.
  • Dual crystal oscillators (for 44.1kHz & 48kHz multiples) to eliminate jitter.

Multi-Layer Power Supply for Ultra-Clean Sound

• Independent Low-Noise LDOs (Linear Regulators):
  • Separate power stages for DAC, analog, and amplification circuits.
  • Minimizes interference for blacker backgrounds and improved detail retrieval.
• External 12V/24W Switching Power Supply:
  • Ensures stable, high-current delivery for dynamic, punchy bass and extended highs.

2. Versatile Connectivity & Functionality

Multiple Input Options

• Wired Inputs:
  • USB (for PC/Mac/Smartphones)
  • Optical & Coaxial (for CD players, TVs, game consoles)
  • RCA Line-In (for external DACs or preamps)
• Wireless Input (K7 BT Only):
  • Bluetooth 5.1 with QCC5124 Chip
  • Supports LDAC, aptX HD, aptX Adaptive, AAC, SBC
  • FiiO Control App for custom EQ, firmware updates, and codec selection.

Flexible Output Modes

• Headphone Outputs:
  • 6.35mm Single-Ended (Standard for most headphones)
  • 4.4mm Balanced (For higher power and lower noise)
• Preamp Mode:
  • RCA Line-Out to connect to external amplifiers or powered speakers.
• Three Output Modes (Switchable via Button):
  1. Headphone Mode (Direct amp output)
  2. Preamp Mode (Fixed line-level output)
  3. DAC Mode (Bypasses volume control for pure DAC output)

Intelligent Protection Systems

• Overload Protection: Prevents damage from high-current spikes.
• Overheat Protection: Thermal sensors ensure safe operation.
• DC Protection: Blocks harmful signals to protect headphones.

3. Premium Design & User Experience

Elegant, Durable Construction

• Full Aluminum Alloy Chassis:
  • CNC-machined for precision fit and finish.
  • Black anodized surface with gold THX & Hi-Res Audio badges.
• Compact Footprint:
  • Only 55mm thick – Fits seamlessly on any desk.
  • Weighs just 800g – Solid yet portable.

RGB Status Indicators

• Real-Time Sampling Rate Display:
  • Blue (≤48kHz), Green (>48kHz), Cyan (DSD)
• Dynamic Light Effects:
  • Flowing RGB animation during power-on/off and input switching.

Precision Volume Control

• 112-Step Analog Volume Knob:
  • ADC curve reconstruction ensures smooth, channel-balanced adjustments.
  • No channel imbalance or noise at low volumes.

4. Who Is This For?

Audiophiles & Music Lovers

• Experience true high-fidelity sound with balanced outputs and ultra-low distortion.
• Perfect for Sennheiser HD 800S, Hifiman Arya, Beyerdynamic DT 1990 Pro, etc.

Producers & Engineers

• Reference-grade accuracy for mixing, mastering, and critical listening.
• Multiple inputs for studio flexibility.

Gamers & Movie Enthusiasts

• THX amplification delivers immersive, distortion-free audio for gaming and movies.
• Bluetooth (K7 BT) for wireless convenience.

5. Technical Specifications

6. Package Contents

• FiiO K7/K7 BT Unit
• 12V/24W Power Adapter
• USB-C to USB-B Cable
• 6.35mm to 3.5mm Adapter
• Bluetooth Antenna (K7 BT Only)
• Quick Start Guide & Warranty Card

7. Why Choose the FiiO K7/K7 BT?

✅ THX AAA 788+ – World-class amplification
✅ Dual AK4493S DACs – High-resolution decoding
✅ True Balanced Design – Lower noise, better dynamics
✅ Bluetooth 5.1 (K7 BT) – Wireless Hi-Res audio
✅ Sleek, Compact Design – Fits any desktop setup

Limited Stock Available – Upgrade Your Audio Today!

Note: The K7 BT adds Bluetooth; the K7 is wired-only.
Order Now to Experience Studio-Grade Sound at Home!

Branding Highlights

• Target Keywords: "best desktop DAC/amp," "THX AAA amplifier," "high-res Bluetooth DAC."

• Visual Appeal: Showcases CNC-machined body, RGB lighting, and THX certification.

• Technical Authority: Highlights ultra-low distortion, dual DACs, and balanced output.