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Headphone Book 2024 (published October 2024 by CD Journal)
(https://www.cdjournal.com/Company/products/mook.php?mno=20241029)

The "Headphone Awards" are sponsored by Headphone Book and selected by 12 audio critics.

Winner of the "Entry Class Award" in the Headphones category

Award winning interview video ★★★★★★★★★★★★★★★★★★★★★★★★★★★★

You can view and listen to this product at the following retailers:
*Purchases are also possible.
(Even if the item is out of stock on our website, it may be in stock at the retailer.)

e☆Earphone Akihabara store, Osaka Nihonbashi main store, Nagoya Osu store, Sendai Station store
http://www.e-earphone.jp/

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We are unable to ship products or respond to inquiries on our company holidays (Saturdays, Sundays, holidays, long holidays, etc.).
*Our company's holidays are listed at the bottom of the top page.
https://ashidavox.com/

Please check the following regarding the issuance of receipts and qualified invoices.
[FAQ]
https://ashidavox.com/faq
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To prevent resale, this product is limited to one per person.
*If you are a corporate customer or would like to purchase multiple units for installation in a facility, etc., please contact us using the information below.
【inquiry】
https://www.ashida.co.jp/jp/contact/index.html

When we receive a large number of orders, shipments will be split up into several business days.
Thank you for your understanding.

[Replacement parts]
[Ear pads set for both ears ST-31-02]
https://ashidavox.com/items/6321b6ca23c2aa7bdde17bdc

■Product Description■
The ST-31, a legendary instrument that was adopted and standardized by numerous recording studios in the 1980s and 1990s, is now being released as a "music listening" model [ST-31-02].

[ST-31] was sadly discontinued due to the discontinuation of the speaker cone paper, which is the key to sound quality. However, in response to the voices of users who had been clamoring for it to be re-released, it has been redeveloped as music listening headphones, "ST-31-02."
*The diaphragm material of these headphones is film, not paper.

Equipped with a specially designed φ50mm driver, it retains the monitor-like aspects of the [ST-31] while providing deep low frequencies and smooth high frequencies,
In addition, unnecessary resonance in the housing is suppressed to achieve clear, pure sound quality.
*The sound quality is different from our original [ST-31 (discontinued product)].

Made in Japan, each piece is carefully assembled by skilled craftsmen, making it a sturdy and sturdy product.
We also focused on high robustness, thanks to the quality and technology we have cultivated in our main product group, "commercial use."

The headband position can be adjusted to your liking by adding a scale to the inside of the slider.
It has a clicking sensation and is designed to be easily fixed, yet allows for smooth adjustment.

Uses a Φ3.5mm gold-plated stereo plug (stereo mini plug), ideal for playing music from a music player.
It also comes with a Φ6.3mm conversion plug, allowing it to be connected to the standard Φ6.3mm stereo jack that is often found on mixers, audio amplifiers, headphone amplifiers, etc.

*The stereo mini plug and Φ6.3mm conversion plug are screw-in type, which makes the conversion plug difficult to come loose when unplugging.

■ Country of manufacture: Japan (Ishinomaki City, Miyagi Prefecture)

■Main Specifications■
Type: Dynamic type Driver: Φ50mm
Impedance: 26Ω (at 1kHz/1mW)
Sound pressure sensitivity: 104dB/mW
Maximum input: 1000mW (IEC)
Frequency response: 7-70000Hz
Cord length: Approx. 1500mm
Plug: Φ3.5mm gold-plated stereo mini plug Weight: Approx. 250g (excluding cord)
Accessories: Instruction manual, Φ6.3mm conversion plug [screw-in type] (attached to the main unit plug)