TRN
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The TRN Baiji combines a 10mm wood-dome composite diaphragm with a dual-magnetic dynamic driver, a redesigned acoustic chamber and zinc alloy housings. Inspired by the baiji, the Yangtze River dolphin, these wired in-ear monitors are designed to deliver natural warmth, smooth detail and an immersive presentation.
The diaphragm dome is formed from an ultrathin slice of selected wood. Precision treatment and forming preserve its natural fibre structure while improving rigidity and stability. The porous fibres provide internal damping to help unwanted vibrations decay quickly, supporting a clean note finish, smooth treble and focused detail.
For a quiet evening with favourite vocal tracks or a longer listening session, Baiji is tuned to combine a warm, relaxed character with clarity rather than heavy bass or softened definition. Sound impressions vary with ear tips, fit, source and personal preference.
A dual-magnetic circuit provides controlled movement of the 10mm diaphragm. Working with the wood dome and acoustic chamber, it is designed for responsive transients, bass depth and lively dynamics while keeping vocals, instruments and spatial cues distinct.
TRN refined the chamber through acoustic simulation and repeated 3D-printed prototypes, adjusting its shape and volume to complement the diaphragm. The structure guides airflow and helps reduce standing waves and unwanted resonance for more cohesive transitions between bass, mids and treble.
The baiji-inspired shells use high-density zinc alloy with precision CNC finishing. Their rigid construction helps limit housing vibration and resonance that can colour the sound, while providing a durable exterior.
The braided cable combines high-purity oxygen-free copper and silver-plated conductors. Detachable 0.78mm 2-pin connectors allow cable replacement or the use of compatible accessories. The manufacturer's plug system uses a screw-lock connection for a secure fit.
Version notice: The manufacturer's range includes 3.5mm, 4.4mm and USB-C plug options, depending on the package. This listing currently distinguishes microphone and no-microphone versions. Do not assume that all three plugs are included; confirm the supplied termination before ordering if you require a specific connection.
Preformed ear hooks follow the natural curve of the ears and distribute support around them rather than relying on the ear canals alone. Choose from the included T-Tips and balanced ear tips to find a comfortable seal and secure fit for everyday listening.
The supplied manufacturer information describes TRN Audio App presets, community tuning profiles and visual parametric EQ with control over filter type, frequency, gain and Q factor. Compatible DSP hardware can save tuning profiles, and the original response curve provides an on-screen reference during adjustment.
DSP compatibility: These features require a compatible USB-C DSP cable or plug and a supported device/app setup. They are not inherent features of a passive 3.5mm or 4.4mm connection. A compatible DSP accessory is not confirmed as included with either current microphone option.
| Brand / model | TRN Baiji |
|---|---|
| Product type | Wired in-ear monitors |
| Driver | 10mm dual-magnetic dynamic driver |
| Diaphragm | Wood-dome composite diaphragm |
| Housing | Zinc alloy with precision CNC finishing |
| Cable | Braided oxygen-free copper and silver-plated hybrid cable |
| Earphone connector | Detachable 0.78mm 2-pin |
| Fit | Over-ear with preformed ear hooks |
| Current listing options | With microphone / without microphone |
| Manufacturer plug options | 3.5mm / 4.4mm / USB-C, package-dependent; inclusion must be confirmed |
| Ear tips | 3 pairs of T-Tips (S/M/L) and 3 pairs of balanced tips (S/M/L) |
Plug accessories depend on the supplied version. Please confirm the termination if your device requires USB-C or a 4.4mm balanced connection.
A new tariff system will take effect across all 27 EU member states starting 1 July 2026. The EU is abolishing the duty exemption for low-value parcels — all goods entering the EU will now be subject to customs duties, including a fixed duty of €3 per HS tariff code category for IOSS-declared goods under €150.
A handling surcharge of USD $5 has been applied to all standard shipments to EU countries on orders under $100. Orders over 100 qualify for free expedited shipping.
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In the event that a shipment is refused, undeliverable, or returned to sender, HiFiCat will process a refund to the original payment method. If a customer requests reshipment, a reshipment fee will apply. A restocking fee of up to 20% may also apply.
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All taxes and duties are prepaid (DDP). 10–15 working days. Free standard shipping.
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