Headphones

The HD660S2 is a great deal for under $500. It's my favorite of all the headphones I've ever tried. I have tried to EQ it, because it does have a low-mid hump and a peak around 8600Hz that I had wanted to smooth out. They're not offensive together. The one balances out the other. But it would be better if neither were there, in my opinion. But getting rid of them backs the stage away and puts the singer and band behind a veil, due to the huge dip around 4400Hz. That dip cannot be lifted without ruining the clarity, which is one of the main selling points of this headphone. I have given up on trying to EQ them.

The bass is probably the other great selling point. It is low, agile, quick, and beautiful without being overbearing. It's the best bass I've heard on a dynamic headphone. With it, I have learned that there are more notes in the bass line to Beck's "Loser" than I had previously heard. It's the opposite of muddy bass. I tried giving a tiny boost to the lowest frequencies just for hip-hop purposes, but it also ruined the clarity. I just can't use any boosts in EQing them, at all.

So, to sum up: They're great headphones. I use them every day, and I love them. They have shown me new sounds in old songs. They fit and are built very well. They have excellent, natural tonality in general. But they have that treble peak, and the low-mid hump to balance it out and give you a V-shape. If I am using the K7 with the 660S2 without EQ, the treble gets fatiguing within a few hours. If I use the MCTH with the 660S2 instead, without EQ, the treble peak isn't as cutting. I can go several hours with it. The sound is warmer, more rounded and organic, but with less punch and not as well-defined layers of depth. If I use them with either amp and EQ to reduce the treble peak and low-mid hump, the tonality is perfect, but distant and dull.

So even though you're breaking rule #2, I'm going to advise you get them and see how they do with your amp. If your amp is technical, analytical, and powerful, that treble might annoy you. If your amp is warm, organic, and rich, you'll probably love the 660S2 with it.

Hell fucking yes. Brilliant headphones, simple as that. Not even going to give you a 200 word essay about why it's good and all that jizz.

The only deal that can beat this is an Edition XS at $330 or less (which happened just a few days ago during 11.11, snagged one at $300 myself).

Yes very worth it. I bought my 660S2 in May for $450 and have thoroughly enjoyed it. Packaging and accessories suck but the headphone is amazing.

No HD 600 series Sennheiser is worth nearly $500 these days in my opinion. That's creeping into better can territory quite a bit.

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