eBay Information
Voltage Differences

🟥Regarding the Electronic Devices, please check the Voltage Info Carefully!

Most of our items are 100V (AC 100 Volt), you may need to use a voltage converter.

Not all of them, but most of them are 100V. Please check the Pictures and Description carefully, or ask us by sending a message.

🟥Different countries have different voltage standards. Please understand it.

Description

🟥Included Accessories & Condition Details: As shown in photos.


🟩Good Condition! Works Well! Tested by our professional technician.


Product Description

SENNHEISER HD 660S Open-back headphones (used)


Thank you for watching.

This is the Sennheiser HD 660S, an open-back headphone.

Highly regarded among audiophiles, these headphones feature a musical and natural sound that is easy on the ears even during extended listening sessions.


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■Product overview

• Brand: Sennheiser

• Model: HD 660S

• Color: Black

•Type: Open-type / Dynamic type

• Wearing style: Over-ear (covers the ears)

• Impedance: 150Ω

• Connection: Wired (6.3mm stereo plug, 4.4mm balanced Pentaconn plug)


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■Product Features

•✅ Wide sound field and natural sound dispersion unique to open-back designs

•✅ A versatile sound with clear mid-to-high frequencies and tight bass, suitable for any genre.

•✅ Selected high-precision drivers keep the volume difference between the left and right channels within ±1dB.

•✅ 150Ω impedance, making it easy to use in portable environments.

•✅ Includes 2 high-quality cables

　・6.3mm stereo standard plug (for amplifiers, etc.)

　• 4.4mm Pentaconn balanced plug (for portable amplifiers, etc.)


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■ About the condition

Original box included

•✅ Tested and confirmed to be working (both left and right channels produce sound normally)

•✅ Disinfected and cleaned with alcohol (99.5 vol%)

•✅ Stored in a smoke-free, pet-free environment (stored in a case with desiccant).

•✅ There are slight scratches on the main unit.

It is in good working order, but please be sure to check the condition in the photos.


Please note that as this is a used item, there may be minor signs of wear and tear.

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The HD 660S is a high-quality model that emerged as an evolution of Sennheiser's renowned HD650, and has been highly praised by many music fans. You can enjoy a high level of sound experience in all situations, from listening to music at home to music production.


🟥Message from Seller
Hi, my name is Danny Chou. I live in Tokyo, Japan. I can speak quite fluent English :)
I can source anything you want from Japan! Feel free to contact me anytime!
Customs Duty Tax - Tariff

🟩To the customers from the USA：

1, Regarding the items under 2,500 USD, the Import Customs Duty Tax (Tariff) is included in the total price of the item. You don't need to pay any additional fee.

2, Regarding the items over 2,500 USD, you need to pay the Customs Duty Tax (Tariff) to the customs office by yourself.


🟩To the customers from Worldwide (outside of the USA)：

The Import Customs Duty Tax (Tariff) is not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to confirm these additional costs before making a purchase.

Important Notice!
🟩1, Most of our items are Japan Standard Spec. Such as the Voltage, most are 100V. Please check it carefully before you purchase. If it doesn't fit in your country, I recommend you use a voltage converter.
🟩2, Make sure you purchased the correct model number.
🟩So, due to the above reasons, please double-check the pictures and description to make sure you purchased the correct item.
Shipping & Return
⬛️Check Your Address
Please verify your address before paying, as we can only ship to addresses entered before placing the order. We cannot change an address after the order has already been placed.

⬛️Tracking
We provide valid Tracking Numbers for all orders.
All our international packages will be shipped by FedEx, DHL, or UPS.

⬛️Return
We offer a standard return or exchange policy. The item must be returned in its original condition to receive a full refund.
Payment

🟩Please make your payment according to the method specified by eBay.