HE Audio Zhang Liao Quad-Driver Hybrid IEM (1DD + 2BA + 1 Planar)

HE Audio Zhang Liao – Flagship Quad-Driver Hybrid IEM

Named after the legendary Three Kingdoms general, the HE Audio Zhang Liao delivers commanding performance through its sophisticated quad-driver hybrid architecture. Combining 1 dynamic driver, 2 balanced armatures, and 1 planar magnetic driver, the Zhang Liao represents the pinnacle of multi-driver synergy, offering exceptional detail retrieval, natural tonality, and expansive soundstage at a competitive price point.

Key Features

• Quad-Driver Hybrid Architecture – 1 dynamic driver + 2 balanced armatures + 1 planar magnetic driver for full-spectrum excellence across all frequency ranges
• Planar Magnetic Treble Driver – Ultra-low distortion planar technology delivers pristine high-frequency extension with exceptional detail and air
• Dual Balanced Armature Midrange – Two precision-tuned BA drivers handle vocal and instrumental reproduction with natural timbre and outstanding clarity
• Dynamic Driver Bass Foundation – High-performance dynamic driver provides impactful, textured low-end with excellent control and speed
• Premium CNC Aluminum Shell – Precision-machined metal housing ensures acoustic integrity, superior durability, and resonance-free performance
• Detachable Cable System – High-purity OFC cable with 0.78mm 2-pin connector for easy replacement and upgrade flexibility
• Multiple Termination Options – Available with 3.5mm single-ended or 4.4mm balanced plug for versatile source compatibility
• Ergonomic Design – Carefully contoured shell with optimized nozzle angle for secure, comfortable fit during extended listening sessions

Driver Configuration: Four Technologies, One Vision

The Zhang Liao's quad-driver hybrid architecture represents a carefully engineered approach to full-spectrum audio reproduction. Rather than simply adding more drivers, HE Audio has selected each driver type for its optimal performance characteristics within specific frequency ranges.

Dynamic Driver (Bass: 20Hz - 500Hz)

A high-performance dynamic driver handles the critical low-frequency foundation. Dynamic drivers excel at bass reproduction due to their ability to move large volumes of air with precision. The Zhang Liao's DD delivers:

• Deep, impactful sub-bass extension
• Textured, controlled mid-bass response
• Fast transient speed without bloat or overhang
• Natural decay characteristics for realistic bass reproduction

Dual Balanced Armature Drivers (Midrange: 500Hz - 8kHz)

Two precision-matched balanced armature drivers handle the critical midrange frequencies where vocals and most instruments reside. BA drivers offer exceptional speed and detail retrieval, making them ideal for midrange reproduction:

• Natural, transparent vocal presentation
• Excellent instrumental separation and layering
• Fast transient response for realistic attack and decay
• Minimal distortion even at high SPL levels

Planar Magnetic Driver (Treble: 8kHz - 20kHz+)

The flagship feature of the Zhang Liao is its planar magnetic treble driver. Planar technology uses a thin diaphragm with embedded conductors suspended in a magnetic field, offering unique advantages for high-frequency reproduction:

• Ultra-low distortion across the treble range
• Extended frequency response beyond 20kHz
• Exceptional detail retrieval and micro-dynamics
• Natural, non-fatiguing treble presentation
• Superior transient response for realistic cymbal and string reproduction

Advanced Crossover Design

The true challenge in multi-driver IEMs isn't just selecting quality drivers – it's integrating them seamlessly. HE Audio has developed a sophisticated crossover network that ensures:

• Phase Coherence – All drivers work in perfect timing to create a cohesive soundstage
• Smooth Frequency Transitions – No audible gaps or peaks between driver handoffs
• Optimal Driver Loading – Each driver operates within its ideal frequency range for minimal distortion
• Natural Tonality – Balanced frequency response that sounds musical and engaging

Sound Signature

The Zhang Liao delivers a refined, reference-oriented sound signature with subtle warmth and excellent technical performance:

• Bass – Deep, controlled low-end with excellent texture and speed. Sub-bass extends cleanly without bleeding into the midrange. Mid-bass provides natural body and impact without overwhelming other frequencies
• Midrange – The star of the show. Dual BA drivers deliver transparent, natural vocal reproduction with excellent detail and layering. Instruments sound realistic with proper timbre and separation
• Treble – The planar magnetic driver provides extended, airy highs with exceptional detail retrieval. Treble is present and revealing without harshness or sibilance, making it suitable for extended listening
• Soundstage – Wide, three-dimensional presentation with excellent depth and height. Instrument placement is precise with natural spatial cues
• Imaging – Pinpoint accuracy in instrument positioning. Excellent for both music appreciation and competitive gaming
• Resolution – Flagship-level detail retrieval reveals subtle nuances in well-recorded material

Premium Build Quality

CNC-Milled Aluminum Shell

The Zhang Liao's housing is precision-machined from solid aluminum alloy, providing multiple benefits:

• Superior acoustic damping eliminates unwanted resonances
• Excellent structural rigidity protects delicate drivers
• Premium aesthetic with durable finish
• Lightweight construction for comfortable extended wear

Ergonomic Design

The shell shape has been carefully contoured for optimal fit and comfort:

• Anatomically-shaped housing conforms to ear anatomy
• Optimized nozzle angle for secure, stable fit
• Lightweight design reduces ear fatigue
• Effective passive noise isolation

Detachable Cable System

The Zhang Liao features a detachable cable with industry-standard 0.78mm 2-pin connectors, offering:

• Easy cable replacement if damaged
• Upgrade flexibility for advanced users
• High-purity OFC copper construction
• Available with 3.5mm single-ended or 4.4mm balanced termination
• Soft, tangle-resistant cable jacket
• Reinforced strain relief at critical stress points

Technical Specifications

• Brand: HE Audio
• Model: Zhang Liao (张辽)
• Driver Configuration: 1 Dynamic Driver + 2 Balanced Armatures + 1 Planar Magnetic
• Frequency Response: 20Hz - 40kHz
• Impedance: 16Ω ±3Ω
• Sensitivity: 108dB ±3dB @ 1kHz
• Connector: 0.78mm 2-pin detachable
• Plug Type: 3.5mm single-ended OR 4.4mm balanced (select variant)
• Cable Length: 1.2m
• Shell Material: CNC-milled aluminum alloy
• Weight: Approximately 10g per side
• Wearing Style: Over-ear ergonomic design

What's in the Box

• HE Audio Zhang Liao IEM earphones (pair)
• Detachable OFC cable (3.5mm or 4.4mm variant)
• Silicone ear tips (multiple sizes: S/M/L)
• Foam ear tips (optional)
• Premium carrying case
• Cleaning tool
• User manual and warranty card

Who Should Buy the Zhang Liao?

Perfect for:

• Audiophiles seeking flagship-level performance at competitive pricing
• Critical listeners who value detail retrieval and natural tonality
• Studio professionals requiring accurate monitoring capabilities
• Music enthusiasts who appreciate technical excellence across all genres
• Gamers seeking precise positional audio and immersive soundstage
• Users upgrading from single or dual-driver IEMs

Ideal music genres: The Zhang Liao's balanced, reference-oriented tuning makes it versatile across all genres, with particular excellence in:

• Classical and orchestral (exceptional instrument separation and soundstage)
• Jazz and acoustic (natural timbre and detail retrieval)
• Vocal-focused music (transparent, engaging midrange)
• Electronic and EDM (controlled bass with excellent extension)
• Rock and metal (fast transient response and dynamic impact)

Recommended Pairings

The Zhang Liao's moderate impedance (16Ω) and high sensitivity (108dB) make it easy to drive from most sources, but it scales well with quality equipment:

• Entry-level: Smartphones, tablets, laptops (sounds good but not reaching full potential)
• Recommended: Dedicated DAPs (FiiO M11, Shanling M6), USB DAC/amps (FiiO BTR7, Qudelix 5K)
• Optimal: High-quality desktop DAC/amp systems, balanced output sources (4.4mm variant)

The HE Audio Philosophy

HE Audio has built a reputation for delivering exceptional value in the competitive IEM market. The Zhang Liao exemplifies their approach: flagship-level driver technology, meticulous tuning, and premium build quality at prices that challenge the established hierarchy.

By incorporating a planar magnetic driver – technology typically reserved for $500+ IEMs – into a quad-driver hybrid configuration at $179, HE Audio demonstrates that cutting-edge performance doesn't require extreme pricing.

Why Choose the Zhang Liao?

• Planar Magnetic Technology – Experience flagship-level treble performance typically found in much more expensive IEMs
• Quad-Driver Synergy – Four carefully selected drivers working in perfect harmony for full-spectrum excellence
• Reference-Grade Tuning – Balanced, natural sound signature suitable for critical listening and music enjoyment
• Premium Build Quality – CNC aluminum construction ensures long-term durability and acoustic integrity
• Exceptional Value – Flagship features and performance at mid-tier pricing

Elevate your listening experience. The HE Audio Zhang Liao delivers planar magnetic excellence, quad-driver sophistication, and reference-grade performance that punches well above its price class.