Hidizs MD4 4BA Balanced Armature Drivers In-ear Monitor Earphone IEM Earbud

4 Custom-Designed BA Drivers - HISIZS Gold Effect

Combining 4 Hidizs Custom Balanced Armature drivers to bring you acoustic charm, developed and tuned for years by Hidizs professional audio team, with evolved sound range performance.
 One custom BA driver for high frequencies: get higher resolution and more extension, crisper sound and richer details.
One custom BA driver for midrange: more body for the mids, more power, and presence. Intoxicating texture, unbelievable vocals.
Two custom BA drivers for low frequency: double power to stimulate thicker bass, incredible depth, tight response, and rich texture.
Two custom BA driver for low frequency: double power to stimulate thicker bass, with amazing depth, tight response and rich texture.

Redesigned internal audio transmission structure, high-precision 3D printing straight acoustic sound tube, ensures continuous and clean audio output of the custom-designed 4-BA drivers, reduce overlap and interference of sounds between multiple drivers. Effectively increasing sound density, reduce distortion and harmonic resonance. Ensure accurate audio crossover, excellent performance and layering!

HIDIZS custom-designed BA drivers



High-precision 3D printing straight acoustic sound structure

3-way Crossover

MD4 accurately calculates the connection of different frequency bands, reasonably allocating high, ultra-high, medium, and low frequencies, increased accuracy and clarity for all, mutually balanced and harmonized. Hidizs' decades of experience in acoustic tuning ensures MD4's outstanding performance in different frequency bands.

1:Precise crossover
2: Professional audio capacitors
3: Superior imaging

Get 4 for the Price of 1! No More Single Tuning Sound

Electronic crossover tech to facilitate switching between four different sound styles, with 2-level tuning switch, easily switching between high & low impedance.
- HIDIZS MD4 HiFi IEMs, 4 sound signatures that work well with all music genre.
Balanced: Classic Hidizs tuning, suitable for most people's listening styles.
Warm: excellent performance at all frequencies, stronger musical sense. Suited for folk & pop music.
Treble: remarkable highs/ultra-high. Suited for rock and electronic music
Bass: boosted bass with excellent speed and a tight response. Suited for symphony and classical music
Hidizs MD4, balanced armature drivers IEMs full of ambition, accommodating different listening preferences, as well as changes in preference over time.

Elegance in Your Ears - HIDIZS Metallic Art

Handmade faceplate, after laser-cut, glued, and hand-polished, finally with a beautiful amber look.
Aluminum-alloy CNC integration, rose-gold middle frame, celluloid faceplate, and aluminum alloy output nozzle. Make the most of Hidizs' industry-leading metalworks, trendy elegance with guaranteed output purity and stability for reduced harmonic resonance and distortion.

More Comfortable Wearing

The headphone connector adopts an elbow design for more suitable for the human ear curve and ergonomic, optimizes wearing experience. The pins are upgraded to gold-plated material for more stable and smooth audio transmission.

Superior Cable

60 high-purity silver wires + 60 high-purity oxygen-free copper wires tightly twisted in four strands to keep it nice and light in appearance, and for better performance in sound. Silver wires for a brilliant and clean sound. Copper wires for added smoothness and gentle performance.

Classic 0.78mm 2Pin Design

Standard 0.78mm 2pin designs are retained for good cable suitability and compatibility. Thus you could enjoy further upgraded sound or get more listening experiences, created by different cables with the same specifications.
Upgraded cable sockets use gold-plated materials to ensure more stable audio signal transmission.

Complimentary Hidizs EA01 Portable Custom Faux Leather Case

Designed for Worry-free Portability. Made from premium, water-proof, sustainable polyurethane leather, designed with magnetic clasp and iron-reinforced leather to prevent shape loss and provide maximum protection. Handmade by seasoned craftsmen.

Hi-Res Certified

Hi-Res Audio certification by Sony. Recognized by JAS (Japanese Audio Association) and CEA (Consumer Electronics Association), for exquisite quality and original sound reproduction.

Hidizs MD4 4 Balanced Armature Drivers HiFi In-ear Monitors

Hidizs custom-designed BA drivers × 4
High-precision 3D printing straight acoustic sound tube
Multi-metal body
4 tuning styles
3-way crossover
Premium cable braiding, quad-core silver & OFC wires
Detachable 0.78mm 2pin gold-plated socket
Hidizs custom earphone leather case
Hi-Res Audio certified