
SENNHEISER Sennheiser HD 400 PRO (Open-Back Monitor Headphones)
Product Condition
Brand New | Unused, as sold. |
---|---|
Mint | Like new, no flaws. |
Excellent | Barely used, very minor wear. |
Very Good | Light wear, fully functional. |
Good | Visible wear, plays fine. |
Fair | Heavy wear, still playable. |
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Description
Description
Whether you're working at home or in the studio, you need your mixes to sound exactly how your listeners will hear them. The HD 400 PRO open-back studio headphones deliver a natural, accurate listening experience, allowing you to fine-tune your signature sound. Their lightweight design and velour ear pads provide the comfort you need for long sessions. Plus, the open ear cups and angled transducers deliver a wide, transparent soundstage, making the HD 400 PRO a trusted companion for those who value quality and precision above all else.
Features: A professional tool for neutral sound reproduction. Lightweight design for all-day use. Single-sided coiled cable allows for flexible operation; a convenient straight cable is also included. Angled transducers are designed to minimize distortion even at high SPLs (sound pressures), creating a spacious and accurate sound field.
Reference-grade headphones for project and professional mixing sessions
The HD 400 PRO's frequency range has been carefully developed, especially in the bass range. The angled transducer design delivers unique stereo imaging, recreating the spatial sound of your mix. In other words, what goes in, you get out. With analytical audio reproduction, the HD 400 PRO reference headphones are your everyday tool for getting the job done.
Open Back, Open Mix: Open earcups replicate the optimal listening position found in high-end recording studios, delivering a wide, transparent soundstage. Closed-back artifacts are a thing of the past. These studio headphones don't contain anything; rather, they ensure neutral transparency, creating the foundation for your best mix.
The perfect synergy of comfort and accuracy. Mixing sessions are never short. The HD 400 PRO's lightweight design lets you focus on your project for hours on end. Articulating ear cups, velour ear pads, and an adjustable headband provide adaptability and comfort that perfectly matches the shape of your head.
Our proprietary 120Ω transducers are precisely tuned to deliver every detail of your mix. High-efficiency driver magnets deliver clarity, while a damping system manages breathability. This delivers deeper bass while reducing distortion that impacts sound quality. Even professional users will appreciate the difference.
More tools, more options
The HD 400 PRO comes with a detachable coiled cable, a convenient straight cable, and a screw-in adapter for connecting to audio equipment with 6.3mm or 3.5mm outputs, such as mixing desks and audio interfaces.
For optimal listening range in your mixing environment
With dearVR MIX, immersive audio experts Dear Reality's advanced spatial audio technology transforms your HD 400 PRO into a world-class virtual stereo mix room with meticulously designed acoustics. Insert the AAX/VST3/AU plug-in into your DAW and hone your mix with confidence by monitoring your session in a reference studio or typical listening environments like a car. Dear Reality's proprietary SHC (Spatial Headphone Correction) technology ensures the HD 400 PRO's acoustic characteristics are not limited by the virtual studio environment, providing a monitoring solution that can be reliably translated to any sound system, regardless of the type of production or musical genre.
■ Included items: HD 400 PRO Studio Reference Headphones
・3m coiled cable with 3.5mm jack plug
・3.5mm jack plug to 6.3mm adapter
・1.8 m straight cable
・Quick Guide
・Safety Guide
■Specifications・Impedance: 120Ω
Frequency range: 6 Hz to 38 kHz (-10 dB)
Sensitivity: 110 dB (1 kHz / 1 V RMS)
・Total harmonic distortion (THD + N): < 0.05% (1 kHz / 90 dB SPL)
-Ear cup shape: circumaural
Jack plug: 3.5 mm jack plug with 6.3 mm adapter
・Body weight: 240 g
・Storage temperature: -55 °C to +70 °C (-67 °F to 158 °F)
・Operating environment: -15 °C to +55 °C (5 °F to 131 °F)
・Operating environment: ≦ 90%
・Acoustic principle: dynamic, open
-Ear pad material: Velour
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
For orders exceeding Paypal’s transaction limit of 1 million yen, we will provide more details. For secure transactions, items will only be shipped to the address registered in your Paypal account.
Regarding detailed information and contact information to us, please check FAQ.
Please Note
The following information applies to international orders.
■ Condition
Items with “USED” in the product name are pre-owned and will be delivered as shown in the photos. Signs of wear may be present. All items are function-tested by our staff and rechecked before dispatch.
■ Stock
Many products are stocked across Ikebe stores in Japan. As a result, shipment may take several days. In-store sales may also cause items to sell out. If an item is unavailable, we will contact you promptly; in that case, the order will be canceled and any payment will be refunded.
■ Shipping
We ship via FedEx. Shipments are fully insured against damage or loss during transit.
- Asia: 10–20 days (estimated)
- North America & Oceania: 20–30 days (estimated)
Shipping costs are calculated based on the delivery address and confirmed at the time of dispatch.
■ Taxes & Duties
Import duties, taxes, and fees are the buyer’s responsibility and are not included in the item price or shipping cost. These fees are typically collected by the carrier upon delivery or at pickup. Please check with your country’s customs office for details before purchasing.
■ Other
We cannot declare a reduced item value or mark purchases as gifts.
* Warranty
Our product warranty is valid only within Japan.
* Voltage
All electrical products are intended for the Japanese market and are designed for 100 V operation.

About us
Founded in 1975, Ikebe Music is one of Japan's largest general music stores.Thanks to its long history and proven track record, it has earned the trust of musicians and music fans not only in Japan but around the world.
Ikebe Music ships not only within Japan, but also overseas.As a well-known retailer of used musical instruments in Japan, we have a wide selection of used and vintage instruments.
We have a wide variety of unusual and rare instruments, so please take a look.Please note that we do not list new products, as our contracts with our suppliers prohibit international shipping.
About our stores
In Japan, we have about 30 stores in Tokyo (Ikebukuro, Shibuya, Akihabara) and Osaka.
We have just opened our flagship store, IKESHIBU (IKEBE SHIBUYA), in Shibuya, Tokyo, which brings together numerous musical instrument specialty stores and serves as a hub for entertainment culture.
Please be sure to stop by if you are visiting Japan.


About Shipping





We carefully pack every item with protective materials to ensure it arrives safely.
The photos above show an example of how we securely pack a bass guitar for shipping.