Massdrop x Sennheiser HD 6XX Headphones
Massdrop x Sennheiser HD 6XX Headphones
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Product Description
Based on Sennheiser’s flagship headset from 2003 to 2009, the HD 650, our open-back Sennheiser HD 6XX headphones let you hear more detail than ever before.
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Our All-Time Best Seller
Based on Sennheiser’s flagship headset from 2003 to 2009, the HD 650, our open-back Sennheiser HD 6XX headphones let you hear more detail than ever before.
Modern Midnight Blue
Designed for the modern listener, the HD 6XX swaps the HD 650’s gray colorway with a darker, more dramatic, deep midnight blue.
6-Foot Cable
Based on feedback from the audiophile community, we updated the HD 6XX with a detachable 6-foot cable (compared to the original’s cumbersome 10-foot cable).
Standard 3.5mm plug
Our community asked for better compatibility with laptops, phones, DAPs, and more—so we opted for an ⅛-inch plug instead of the standard ¼-inch plug.
Classic Sennheiser Sound
The HD 6XX has a smooth, laid-back presentation with a balanced midrange and natural-sounding bass.
Neutral Response Curve
The neutral response provides an excellent listening experience across virtually any genre—from virtually any source.
Open-Back Design
The open-back design offers roomy, auditorium-like acoustics for accurate sound reproduction. However, the design won’t isolate you from outside noise or prevent sound from leaking, so it's best-suited for quieter environments.
A Refined Soundstage
Like the HD 650, the HD 6XX is considered more refined and better damped than its predecessor, the HD 600. It has less energy in the upper midrange and an overall balance that’s a bit warmer and bassier.
The Perfect Intro to Audiophile
Our HD 6XX sounds great out of the box, but there are plenty of ways to customize it even further, along with excellent long-term support from Sennheiser.
Amplify Your Experience
The HD 6XX responds well to improved sources of amplification, and headphone amplifiers of any output impedance will make a great match.
The Right Match
For the objectivist audiophile seeking a complete desktop solution, there’s the Massdrop O2 + SDAC: a DAC/amp that brings two great products together in one affordable, easy-to-use package—available at checkout for $25 off.
Find Your Balance
Designed specifically for our Sennheiser HD 6XX and HD 58X headphones, these balanced cables allow you to plug into compatible 2.5-millimeter digital audio players, portable amps, and the latest devices. Add one at checkout for $10 off.
You made it happen!
This project wouldn’t be possible without the community. Your votes, comments, and other contributions help us make each product the best that it can be.
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Massdrop x Sennheiser HD 6XX Headphones

  • Massdrop x Sennheiser
  • Color: Midnight blue
  • Transducer principle: Open, dynamic
  • Frequency response: 10 Hz – 41 kHz
  • THD: < 0.05%
  • Nominal impedance: 300 ohm
  • Cable length: 6 ft (1.8 m)
  • Connector: ⅛ in (3.5 mm)
  • Weight without cable: 9.2 oz (260 g)
  • Made in Romania 

Massdrop x Sennheiser HD 6XX Headphones 

  • ⅛–¼ in (3.5–6.35 mm) adapter
  • 2-year manufacturer’s warranty 
Drop Extended 3-year Warranty with Accidental Coverage

Drop is offering a purchasable extended warranty with accidental coverage for this product. Select the option at checkout, and your purchase will be protected from drops, spills, accidents, and everything but theft for 3 years. See the full details of our warranty program here.


We get it. Sometimes what you ordered just doesn’t work out. If that’s the case for you, don’t fret! All customers (both US and international) may return or exchange this item in new, unused condition within 30 days of delivery.


All orders will be shipped by Drop.

Estimated ship date is Mar 1, 2021 PT.

Payment will be collected at checkout. After this product run ends, orders will be submitted to the vendor up front, making all orders final. Check the discussion for updates on your order.

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