Yamaha YH-4000 Premium Open-Back Planar Magnetic Headphones at Vinyl Sound Toronto Canada

The YH-4000 is a premium open-back over-ear planar magnetic headphone from Yamaha (Kakegawa, Japan), available at Vinyl Sound in Toronto, Canada. Inheriting the engineering foundation of the flagship YH-5000SE, the YH-4000 is built around a redesigned Orthodynamic planar magnetic driver tuned for a more intimate, energetic sound signature with a 5Hz-70kHz frequency response, 34-ohm impedance, and 97dB/mW sensitivity in a 320-gram magnesium body. Hand-assembled at Yamaha's Kakegawa factory alongside flagship grand pianos and top-tier audio components, the YH-4000 includes a Japanese-made PET mesh acoustic filter, hybrid artificial suede and PU leather earpads, a braided silver-coated OFC cable, and a semi-rigid carrying case, delivering a distinctly voiced Orthodynamic experience at a step below the YH-5000SE's flagship tier.

Orthodynamic Driver: Flagship Technology with Its Own Voice

The YH-4000's Orthodynamic planar magnetic driver inherits the core architecture of the YH-5000SE while introducing a deliberate tuning difference: the sound-absorbing material present in the flagship model has been intentionally omitted, resulting in a more direct, energetic, and intimate sound character with a denser midrange and tighter low-frequency response. The ultra-lightweight thin-film diaphragm features conductive coils on both sides and finely corrugated wave-like patterns across its surface, enabling far faster and more precise motion than a conventional dynamic driver. Micro-perforation air dampers on both sides control diaphragm movement with accuracy, preserving the natural dynamic contrast of music without distortion or loss of transient energy. The open-back housing and arch-shaped internal reflector work alongside the PET mesh filter to control internal pressure and eliminate resonance within the rear cavity, capturing delicate sonic expressions from initial note through final decay.

Japanese-Made PET Mesh Filter and Open-Back Housing Design

The YH-4000's open-back housings are generously sized to wrap comfortably around the ear with substantial internal acoustic volume, optimizing airflow conditions for the thin-film diaphragm and eliminating reflected sound resonance from the rear cavity. Internal pressure regulation is achieved through a newly developed Japanese-made PET mesh filter, selected after evaluating a range of finely woven materials with varying airflow characteristics to find the permeability that precisely matched the acoustic vision for the YH-4000. An arch-shaped internal protrusion functions as a directional reflector to further refine sonic accuracy throughout the frequency range. The housing frame is constructed from magnesium for its outstanding combination of vibration damping and structural rigidity at low weight, and the open-back design is protected by a triaxial woven mesh sourced from the aerospace industry.

Key Features

• Orthodynamic Planar Magnetic Driver: Redesigned Orthodynamic driver tuned without sound-absorbing material for a more intimate, energetic, and direct sound signature compared to the YH-5000SE, with a thin-film diaphragm, bilateral conductive coils, corrugated surface geometry, and micro-perforation air dampers for precise dynamic control.
• 5Hz-70kHz Frequency Response: Extends well beyond the audible range in both directions, capturing the full harmonic content and spatial information of high-resolution recordings without frequency limiting at either extreme.
• Japanese-Made PET Mesh Acoustic Filter: A precision-selected PET mesh filter of Japanese manufacture regulates internal housing pressure with the specific airflow permeability needed to achieve the YH-4000's target sound of dense midrange, tight low-end, and open, spacious presentation.
• 320g Magnesium Body: The housing frame uses magnesium for its high vibration-damping rate and structural rigidity, keeping total assembled weight to 320 grams for comfort during extended listening sessions without mechanical fatigue.
• Hybrid Leather and Suede Earpads (HEP-5000LS): Developed exclusively for the YH-4000, these earpads combine high-quality artificial suede on the inner face-contact surface with exceptionally flexible perforated PU leather on the outer edge, blending the warmth of suede with the sonic resolution and controlled sound field of leather in a single hybrid design.
• Silver-Coated OFC Cable: A 2-metre unbalanced 3.5mm cable with 6.3mm screw-on adaptor using silver-coated OFC wire delivers clear high-frequency transmission and an open, natural sound character.
• Two-Layer Headband with Stepless Slider: A solid stainless-steel headband arm with optimized lateral pressure and a three-dimensionally woven head pad distributes surface pressure evenly, while a stepless slider allows precise, personalized length adjustment for a consistent, comfortable fit.
• Inclined Swivel Mechanism: The tilted rotation axis of each earcup swivel enables both lateral and vertical mobility, allowing the housing to fit securely behind the ear to prevent air leakage and preserve low-frequency response and localization accuracy.
• Aerospace Triaxial Mesh Housing: The open-back housing gap is protected by a triaxial woven mesh used in aerospace applications, providing structural protection with a premium visual texture consistent with the YH-4000's design language.
• Semi-Rigid Carrying Case: A purpose-built semi-rigid protective case is included for safe transport and storage of the YH-4000 and cable.
• Hand-Assembled at Yamaha's Kakegawa Factory: Each YH-4000 is individually assembled by skilled craftsmen at Yamaha's Kakegawa factory in Japan, the same facility responsible for Yamaha's flagship grand pianos and top-tier audio components, under the highest standards of quality control.

Technical Specifications

What's in the Box

• Yamaha YH-4000 Open-Back Over-Ear Headphones
• 3.5mm unbalanced silver-coated OFC cable, 2m (with 6.3mm screw-on adaptor)
• Hybrid leather and suede earpads (HEP-5000LS, pre-installed)
• Semi-rigid protective carrying case

Frequently Asked Questions

What is the Yamaha YH-4000?

The Yamaha YH-4000 is a premium open-back over-ear planar magnetic headphone from Yamaha, featuring a redesigned Orthodynamic driver with a 5Hz-70kHz frequency response, 34-ohm impedance, 97dB/mW sensitivity, and a 320-gram magnesium body. Hand-assembled at Yamaha's Kakegawa factory in Japan, it delivers a more intimate and energetic Orthodynamic sound character than the flagship YH-5000SE, and includes a silver-coated OFC cable, hybrid suede and leather earpads, and a semi-rigid carrying case. The YH-4000 is available at Vinyl Sound in Toronto, Canada.

How does the Yamaha YH-4000 compare to the Yamaha YH-5000SE and HiFiMAN Sundara?

The Yamaha YH-4000 sits one tier below the flagship YH-5000SE in Yamaha's headphone lineup, sharing the same Kakegawa factory hand-assembly, 320-gram magnesium body, 34-ohm impedance, and 5Hz-70kHz frequency response, but tuned with a more intimate, energetic sound by omitting the sound-absorbing material used in the YH-5000SE. The YH-5000SE adds a second earpad set in Toray Ultrasuede, a 4.4mm balanced cable, and a machined aluminum and copper alloy stand not included with the YH-4000. Against the HiFiMAN Sundara, the YH-4000 offers a comparable planar magnetic driver format with hand-assembly quality control at Yamaha's flagship manufacturing facility, hybrid suede and leather earpads included in the box, and Yamaha's distinctive Japanese-made PET mesh acoustic filter tuning, while the Sundara's steeper 37-ohm impedance at lower sensitivity makes it slightly more demanding to drive to full potential.

Does the Yamaha YH-4000 require a headphone amplifier?

The Yamaha YH-4000 has a 34-ohm impedance and 97dB/mW sensitivity, placing it among the more accessible planar magnetic headphones in terms of amplification requirements. It can reach moderate listening levels from a quality portable player or DAC/amp, but its full dynamic capability, tight low-frequency expression, and spatial detail are best realized through a dedicated headphone amplifier. A balanced amplifier with a 4.4mm or XLR output would require a third-party balanced cable, as the YH-4000 ships with only the unbalanced 3.5mm cable.

What is the sound difference between the Yamaha YH-4000 and YH-5000SE?

The Yamaha YH-4000 and YH-5000SE share the same Orthodynamic planar magnetic driver architecture and identical measured specifications for impedance, sensitivity, frequency response, and weight, but are tuned to deliver distinct sound signatures. The YH-5000SE includes sound-absorbing material inside the housing that the YH-4000 intentionally omits, resulting in the YH-4000 having a more direct, energetic, and intimate character with a denser midrange and punchier low-frequency response. The YH-5000SE is tuned for a broader, more expansive, and spatially diffuse presentation. Neither is objectively superior; the choice depends on whether you prefer the YH-4000's immediacy and energy or the YH-5000SE's wider, more enveloping sound stage.

Can I add a balanced cable to the Yamaha YH-4000?

The YH-4000 ships with a single unbalanced 3.5mm silver-coated OFC cable. The headphone uses a detachable cable connection, and third-party balanced cables terminated in 4.4mm, 2.5mm, or XLR can be used with the YH-4000 if they are compatible with its headphone socket format. Using a balanced connection reduces noise and crosstalk compared to single-ended operation and is recommended for critical listening through a balanced-output amplifier or DAC/amp.

Where can I buy the Yamaha YH-4000 in Toronto or Canada?

The Yamaha YH-4000 is available at Vinyl Sound, an authorized Yamaha dealer in Toronto, Canada. Purchasing from an authorized Canadian dealer ensures full Yamaha manufacturer warranty coverage and access to knowledgeable staff for product demonstration and amplifier pairing advice. Vinyl Sound carries Yamaha's full premium headphone range including the YH-4000 and flagship YH-5000SE for in-store comparison.

What earpads does the Yamaha YH-4000 include and can they be replaced?

The YH-4000 includes the HEP-5000LS hybrid earpads, developed exclusively for this model, combining high-quality artificial suede on the inner face-contact surface with perforated flexible PU leather on the outer edge and across the entire surface. This hybrid construction blends the warmth and soft texture of suede with the sonic resolution and controlled presentation of leather. The earpads are user-replaceable, and Yamaha offers them as a standalone accessory under the HEP-5000LS designation for replacement or spares.