Sennheiser HD6XX

  • LABB66267
  • Approved
Sennheiser HD6XX

Sennheiser HD6XX

Used
Sennheiser HD660 S2 Open-Back Headphones

Selling a like-new Sennheiser HD 660S2 open-back audiophile headphones in excellent condition. Lightly used, fully functional, and very well cared for.
Condition:
Like new – no cracks, dents, or functional issues
Ear pads and headband in excellent shape
Adult-owned, smoke-free environment
Features:
Open-back design with wide, natural soundstage
Detailed, balanced sound with improved bass over the 660S
300-ohm impedance (recommended with a headphone amp)
Extremely comfortable for long listening sessions
Included:
Headphones
Original cables 6.35mm
Only selling due to lack of use. Ships fast and securely.

Used condition

Seller Damage Description

Flawless like new condition open box.

Seller: Kelly P.
Kelly P.
Ships from Denver, CO
PayPal
Seller accepts payment via PayPal

Free Shipping

  • Seller ships from Denver, CO
  • Ships in 2 business days or less with tracking and insurance
  • Seller not required to ship internationally

Returns and Refunds

Payments and Taxes

Listing Metadata

  • Date Created: Jan. 28, 2026
  • Date Updated: Jan. 28, 2026
  • Date Expires: Feb. 7, 2026

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