Review: The FiiO AIR AMP — A Feature-Rich, Compact Streaming Class-D Amplifier

FiiO has steadily grown beyond its roots in portable audio, expanding its engineering footprint into traditional desktop and living-room Hi-Fi. With products like the JadeAudio Level 1 and the FiiO SP5, the brand has demonstrated a commitment to making high-fidelity sound more accessible and user-friendly.

Continuing this trajectory, the FiiO AIR AMP enters the market as a compact, all-in-one streaming integrated amplifier priced at $299. Packing an ES9020Q DAC, network streaming capabilities, pre-amplification, and a Class-D speaker amplifier delivering 120W per channel into 4Ω into a single chassis, the AIR AMP is designed to anchor modern 2.0 or 2.1 audio systems.

FiiO AIR AMP Review — Headfonics

Main Facts: What is the FiiO AIR AMP?

The FiiO AIR AMP is a versatile, multi-functional desktop and living-room amplifier that consolidates several components of a traditional Hi-Fi stack into one compact unit.

  • Price: $299 USD
  • Amplification: Class-D power amplifier delivering up to 120W per channel into a 4Ω load (powered by an included 48V/5A power supply, with an optional 48V/10A high-current supply available).
  • DAC Chipset: Equipped with an ES9020Q digital-to-analog converter.
  • Connectivity: Dual-band Wi-Fi (2.4GHz/5GHz), Gigabit Ethernet, USB, optical, coaxial, RCA line-in, and Bluetooth.
  • Outputs: Passive speaker terminals, a dedicated subwoofer output, and pre-amp outputs.
  • Software Features: 10-band parametric equalizer (PEQ) accessible via the FiiO Control app and web interface; support for AirPlay, Roon Ready, QPlay, NAS playback, and local USB storage.

Chronology: Evolution of FiiO’s Home Audio Ecosystem

FiiO’s expansion into domestic audio hardware has unfolded over several key product cycles, moving from simple headphone accessories to comprehensive living-room setups:

FiiO AIR AMP Review — Headfonics
  1. The Portable Foundation: For years, FiiO built its reputation on portable DAC/amps, digital audio players (DAPs), and IEMs.
  2. The Desktop Shift: The introduction of desktop components—such as the K-series R2R DACs and compact desktop amps—bridged the gap between mobile listening and static setups.
  3. Entering Speaker Amplification: Products like the JadeAudio Level 1 introduced consumers to budget-friendly speaker amplification, albeit with basic functionality.
  4. The Modern Streaming Era: The release of the AIR AMP represents a major step forward, combining network streaming intelligence, sophisticated DAC architecture, and high-output Class-D power into a cohesive, sub-$300 package.

Supporting Data & Design Architecture

Build Quality and Physical Layout

Measuring approximately 207 x 188 x 42mm, the AIR AMP shares the utilitarian, robust design language seen in recent FiiO desktop gear like the K13 R2R. While it lacks the lighter, wood-accented aesthetic of the JadeAudio Level 1—which might blend more easily into certain Scandinavian or modern living room decors—the AIR AMP feels substantially heftier and more premium in person.

The front panel features a clear display that provides at-a-glance information on sources and volume levels when placed within arm’s reach. For users managing a living-room layout from a distance, FiiO includes an intuitive, highly responsive infrared remote control. Thermal performance is exemplary; even during extended listening sessions, the chassis remains cool to the touch.

FiiO AIR AMP Review — Headfonics

Connectivity and I/O Versatility

The rear panel is densely populated, offering inputs for digital sources (USB, optical, coaxial), analog gear (RCA line-in), wireless streams (Bluetooth), and local network libraries.

Output flexibility is another highlight. While passive speaker terminals handle standard stereo setups, the inclusion of a dedicated pre-amp output and a subwoofer out transforms the device into a capable 2.1-channel hub.

FiiO AIR AMP Review — Headfonics

Software, Setup, and Network Performance

Configuration and Network Reliability

Getting the AIR AMP connected to a home Wi-Fi network requires a brief initial step where the user connects directly to the unit’s temporary broadcast network. While straightforward for tech-savvy consumers, it is slightly less frictionless than plug-and-play onboarding processes found on competing streaming platforms like WiiM.

Once configured, however, network stability is rock-solid. Over a standard multi-day testing period involving hours of daily playback, the unit maintained a flawless connection without a single drop-out.

FiiO AIR AMP Review — Headfonics

Supported Protocols and App Control

  • AirPlay & Streaming: AirPlay serves as a primary, seamless method for high-fidelity casting. Spotify tracks switch rapidly, and video playback exhibits no noticeable lip-sync delays.
  • Bluetooth: Bluetooth performance remains stable, though users will note a minor reduction in ultra-fine top-end detail compared to wired or Wi-Fi casting.
  • FiiO Control App: Primarily utilized for system configuration and fine-tuning the 10-band PEQ system, the application interface is clean and responsive. Adjusting room correction curves directly from a smartphone is an exceptionally convenient feature at this price point.
  • Notable Omission: The software suite lacks native Spotify Connect support. While AirPlay bridges the gap for Apple users, the addition of Spotify Connect would streamline multi-user households and Android integration.

Sound Impressions and Performance Analysis

Overall Tuning and Timbre

Tested primarily with Yamaha NS-50F floorstanding speakers, the AIR AMP presents a neutral, smooth, and full-bodied sonic profile. It avoids the lean or overly clinical signature common in budget Class-D implementations, offering enough mid-range presence and low-end control to satisfy listeners across various genres.

  • Low End: Bass is tight, articulate, and well-controlled. On synth-heavy or new-wave recordings, basslines carry adequate weight without bleeding into the mid-range. When paired with a powered subwoofer via the dedicated output, the low frequencies extend effortlessly—though users must manually adjust crossover and volume knobs on the subwoofer itself, as the amplifier lacks onboard digital bass management.
  • Midrange: Vocal reproduction stands out as a strong suit. Center images are distinct, and acoustic instruments like pianos and strings possess enough density to sound organic rather than hollow or thin.
  • Treble: High frequencies are smooth yet detailed. Transient details—such as guitar strums or cymbal decay—are neatly separated, preventing complex arrangements from muddying together.

Soundstage and Dynamics

The AIR AMP delivers an expansive soundstage with notable width and impressive vertical staging, particularly on complex indie rock mixes where percussion and vocals occupy distinct vertical planes. Center imaging is stable and precise.

FiiO AIR AMP Review — Headfonics

With a comfortable listening volume resting around 35 on the digital scale, the amplifier exhibits immense headroom. Pushing the volume past normal levels reveals zero signs of strain, harshness, or power compression, proving that the 120W per channel rating into 4Ω provides more than enough muscle for mainstream bookshelf and floorstanding loudspeakers.


Official Responses and Market Implications

Pros & Cons

  • Pros:
    • Neutral, full-bodied, and engaging sound signature.
    • Comprehensive all-in-one feature set (Streaming + DAC + Preamp + Power Amp).
    • Generous power output and thermal headroom.
    • Highly customizable 10-band PEQ via mobile app.
  • Cons:
    • Lacks Spotify Connect support.
    • Absence of an onboard subwoofer crossover control.

Market Implications

The FiiO AIR AMP arrives in a fiercely competitive 2-channel Hi-Fi landscape populated by rival brands like Aiyima, SMSL, and FiiO’s own entry-level offerings. By integrating high-resolution network streaming, a robust DAC, and substantial Class-D power into a $299 chassis, FiiO has raised the bar for value-driven audiophile equipment.

FiiO AIR AMP Review — Headfonics

Despite minor firmware omissions like Spotify Connect and onboard bass management, the AIR AMP stands as a remarkably competent, future-proof nerve center for modern, space-conscious stereo systems.