Hi, I have a HD650 and I just joined the drop for HE4XX. I mostly use my HD650 with my O2. I am not really sure whether O2 is driving 650s to its true potential. Recently I have been travelling a lot and been staying in hotels a lot. So carrying around O2, even though it is light, with it's...

iFi iDSD Micro BL, Sennheiser HD650, FiiO X5 2nd gen

The Ampsandsound Kenzie w/ Sennheiser HD 650

The Ampsandsound Kenzie w/ Sennheiser HD 650

Ampsandsound Kenzie Headphone Amplifier w/ Sennheiser HD 650

Ampsandsound Kenzie Headphone Amplifier w/ Sennheiser HD 650

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Sennheiser HD650 box

Sennheiser HD650

JDS Labs with iPad 3rd Gen running Naturespace and Sennheiser HD650

Sennheiser HD 650 with Meier Concerto and StageDAC :-)

My HD650s on one of my radiation mask headphone rests.

Final modification applied to the headband of my SRH440. I trimmed the pleather from the stock abomination they called a headband, and stitched it to the ledges of the HD650 headband cushion. The earpads are SRH940's pads.

Hacking SRH440 headband, step #3. Mounting the Sennheiser HD650's headband pad to the SRH440 headband. I used double faced tape, because it's quick and dirty. I'll probably get something better to make it more permanent.

Hacking SRH440 headband, step #3. Mounting the Sennheiser HD650's headband pad to the SRH440 headband. I used double faced tape, because it's quick and dirty. I'll probably get something better to make it more permanent.

Sennheiser HD650 headband pad. PN 88597.

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Sennheiser HD650 by hgabi00

Sennheiser hd650

My hd650 + bravo v2 tube amp

NOTE: If you can't see the embedded video above, please CLICK HERE to see the video. Today, Massdrop is announcing the Sennheiser x Massdrop HD6XX, which is essentially the Sennheiser HD650 with minor physical differences and a different cable. We've confirmed it's the same headphone...