Product ReviewsSennheiser Massdrop x HD 6XX Open-Back Reference Class Headphones Drop HD6XX

Benchmark headphones at an affordable price.

They are a little tight at first, but they rapidly conform to your head. I don't know if I would call them lightweight - they are a substantial set of headphones. So much has been written about their benchmark sound that there is little to add. They are a reference point which allows you to evaluate the honesty/coloration/clarity/balance/spatial characteristics of other headphones. I would also recommend a good set of IEMs, like the ultra affordable Truthears, as a reference.

This is my second pair - I sold my 600s years ago and have regretted it ever since. Better headphones than the Massdrop 5XXX.

If in doubt, buy them. I don't think you will be disappointed.Read full review...

Verified purchase:  Yes | Condition: pre-owned | Sold by: bouncebacktech

Excellent sounding headphones if a bit clampy

Sound quality is great and crisp. Recommend using a DAC and a headphone amp when listening to these to get the most out of them. These have been tuned very well. They are all-day comfortable, even though they (like most all Sennheiser headphones) have a tight clamping feeling on my head. I would recommend these for sure. These dynamic driver headphones will make a great addition in your listening arsenal.Read full review...

Verified purchase:  Yes | Condition: pre-owned | Sold by: communitystore

Really nice set of cans for the price.

At first, I was a little bit not enamored with the Sennheiser “signature” sound. It is a little different. For me, they need just a bit of EQ on the top end (just a note; I am a 61 year old man) but after that, and getting acclimated to them, I’ve learned to love them. And that’s coming from a guy that’s used to Grados.
I still like my RS2e’s and my SR 80’s, but the Senns give me a different perspective, and for some genres, they work really well. Especially jazz and bluegrass.
The Massdrop version (HD 6xx) of the HD 650 are really nice. Only thing I didn’t care for was the cable. Too short for my purposes. But, a standard 10 foot replacement cable from Sennheiser was reasonably priced and it is terminated with a 1/4” plug instead of the 3.5 mm, which I like better. Highly recommended!Read full review...

Verified purchase:  Yes | Condition: new | Sold by: born2bvan

Great but needs an amp, they scale with power

These are the Tom Hanks of headphones, versatile and good for almost everyone. They scale with power, an amp isn't optional to hear how good they really sound. Steady voltage to handle the peaks helps a lot. Best amp I've had with these was the SMSL SP200 but the Magni Heresy was terrific too. The Topping e30 DAC and original Atom DAC were really good with them too. They peak a lot higher than 300 ohm so pack some power to handle the voltage swings at high volume.Read full review...

Verified purchase:  Yes | Sold by: g22tech

Item came in as described

Have been using these for about a week and have had no issues with them whatsoever. They've showed little to no signs of use and are just like brand-new.

Verified purchase:  Yes | Condition: pre-owned | Sold by: idevicewholesale

Can't go wrong with the HD6XX

You can't go wrong with the 6XX. Even if you end up with a large headphone collection, you'll surely keep this in it. Probably the best 1st audiophile headphone for anyone. Excellent build quality. Neutral sound like the HD600 but with a little extra midbass and a little extra sparkle on top, neither of which are at all overdone. I use these now more than my HD600.Read full review...

Verified purchase:  Yes | Condition: pre-owned | Sold by: mama_simon

A Rebadged Version Of The Sennheiser HD650 For Half The Price!

The Sennheiser HD650 was the company's flagship headphone amplifier from 2003 to until 2009. Over a decade later, the HD650 - as well as its HD600 brethren - continue to be highly sought after for their refined sound quality and value. As such, New Old Stock HD650 and HD600 headphones are selling for well over $300, and in some instances more than $400.

This is quite remarkable given that the HD600 has been out of production since 2003 and the HD650 since 2009.

In 2016, recognizing the popularity of these classic headphones, Massdrop decided to have their own version of the HD650 manufactured by Sennheiser (the Sennheiser HD 6XX).

The HD 6XX is mechanically identical to the HD650 except for its
color and Massdrop badging. The main difference here is price,
since the Massdrop HD 6XX sells for $199.99 delivered - about half of what a New Old Stock HD 650 is selling for.

To say that this makes the HD 6XX a bargain is truly an understatement. Everything about the HD 6XX from its terrific sound to its excellent build quality exudes a sense of quality. At this price one would be hard pressed to find a better value in a headphone.

As such, the HD 6 XX is highly recommended!

Read full review...

Verified purchase: No

Excellent sounding headphone - must have.

This is an incredibly good sounding headphone at a very affordable price for the sound quality you get. It clamps really tight so it takes some using to improve comfort. I recommend using this headphone with an amplifier - not directly from a mobile phone.Read full review...

Sennheiser HD 6XX

Look at all the online reviews, Sennheiser makes great headphones and these are awesome! Sound is great but most likely will need a small separate headphone amplifier.

Verified purchase:  Yes | Condition: pre-owned | Sold by: auwknlsytzm@Del...

It came looking better than “used”. It came with everything in the description. Overall great quality!

It came looking better than “used”. It came with everything in the description. Overall great quality!

Verified purchase:  Yes | Condition: pre-owned | Sold by: bryannn029