Overview

The FiiO FH19 is a hybrid in-ear monitor pairing a push-pull dual 13.7mm dynamic driver set with six balanced armature drivers per ear — four custom Knowles mid-frequency drivers and two Knowles SWFK treble drivers — for eight drivers per ear in total. It covers an 8Hz–40kHz frequency range at 16Ω impedance and 109dB/mW sensitivity. The shell combines a 7000-series aerospace-grade aluminum housing with a pure titanium midframe in a semi-open design, weighing about 12g per earpiece. An 8-strand, 224-wire high-purity silver Litz-braided cable with a transparent TPU sheath terminates in an expanded MMCX connector with a swappable 3.5mm/4.4mm plug.

Simcoe Audio Video Insight

FiiO includes three swappable audio filters (red, black, and green) alongside a mid-frequency notch filter tuned to reduce an 8kHz peak — a detail that matters because an unchecked peak in that range is a common source of listening fatigue on hybrid IEMs. Between the filters and the notch tuning, the FH19 gives you more control over its signature than most hybrid designs at this price.

• Push-pull dual dynamic driver plus 6 Knowles balanced armatures per ear
• 7000-series aluminum shell with a pure titanium midframe
• Three swappable audio filters and an 8kHz notch filter tuning

Best for the FiiO FH19: try all three swappable filters before settling on one, since each shifts the balance differently, and pair the 4.4mm plug with a balanced source to get the most out of the eight-driver array.

More Details

Why It Wins

• 8-Driver Hybrid Array: A push-pull dual dynamic driver set plus 4 Knowles mid and 2 Knowles treble balanced armatures per ear.
• Aerospace-Grade Shell: 7000-series aluminum housing with a pure titanium midframe.
• Three Swappable Filters: Red, black, and green audio filters to adjust the sound signature.

What Makes It Different

A push-pull dynamic driver configuration is less common than a single dynamic driver, and pairing it with six balanced armatures plus an 8kHz notch filter and three swappable filters gives the FH19 more tuning flexibility than most hybrid IEMs in FiiO's lineup.

Technical Highlights

• Patented S.Turbo Design: Aims to enhance bass response from the dynamic driver set.
• Rubycon Film Capacitor Crossovers: Audiophile-grade crossover components rated to 0.1% accuracy.
• Suspended Voice Coil Design: Part of the dynamic driver's construction for detail and control.

Buyers Guide

Who This Is For

• The Tuning Enthusiast: Wants swappable filters and a notch-tuned response to fine-tune the sound.
• The Detail-Focused Listener: Will appreciate the six balanced armature drivers handling mids and treble.
• The Bass-Forward Listener: The push-pull dynamic set and S.Turbo design are built to deliver impactful low end.

Ideal Use Case

• Critical Home Listening: Paired with a resolving DAC/amp or desktop source.
• High-End Portable Listening: With a balanced-output DAP using the 4.4mm plug.
• Genre-Switching Listeners: Swap filters to match different recordings.

What To Pair It With

• A Balanced Desktop DAC/Amp: To use the 4.4mm plug and unlock the full driver array's resolution.
• A High-Resolution DAP: For portable listening without sacrificing detail.
• All Three Included Filters: To find the tuning that best matches your music.

Alternative Options

The FH19 is an 8-driver hybrid IEM with swappable tuning filters. If you'd prefer an all-balanced-armature flagship instead, FiiO's FA19 uses ten Knowles drivers per ear, while the FH9, already in our lineup, offers a simpler 1 dynamic plus 6 balanced armature hybrid design.