Music is extremely pleasurable, well balanced, and even at higher volume, easy on the ears.

Compared to the HD 600 they have less efficiency, the headband is less comfortable, and their spectral balance is not as good.

For me, the HD 650 strikes the perfect balance between exceptional technical ability and musicality

The vocals and the instruments; horns, guitar, drums, cymbals and strings are extremely well balanced and crystal clear

Fantastic clean sound, fantastic resolution, fantastic tone, warm, extremely well balanced, great bass (not boosted), very detailed sound, well separated instruments, very present sound, great sound stage, the highs and mids are smooth, clean and sound very musically.

It is not "bass heavy."Having a strong musical and AV background, I can tell you that the (newer) HD650 is a very well balanced headphone

a zen sense of perfect balance regarding the presentation of the sonics

The sound is smooth and balanced with incredible clarity and detail.

There was no more veil, just pure, balanced, open sound

Both the HD650 and PTH500 have the best balance across all sound frequencies with the widest sound stage

, good overall balance

Overall, I feel the HD-650's are too heavy-sounding and kind of "dark" - the bass is too strong for a good sound balance

The Senn 650 is somewhat in between for a good balance of true sound with some ever-so slight flavor.

Perfect balanced and transparent headphones

The 650's produce a warm, balanced sound (for my ears) that is pleasant to listen to for extended periods without fatigue.

Snug comfortable fit and excellent well balanced sound

So yes, in comparison, a well-balanced headphone would have a "warm" sound

These have the perfect balance to me for listening to house, trance, hip hop...

Alanis Morisette beautifully balances heart and tempo on "Flavors Of Entanglement"; from the huge rasping beats of "Straitjacket", the soft piano on "Not As We" or the playful bassline on "Giggling Again For No Reason", you never lose sight of the most important tool; her voice

The Bose were pretty close to these, but I think the HD650s simply have better clarity and balance

The AKGs were balanced, but weak.

For me, the HD 650 strikes the perfect balance between exceptional technical ability and musicality

500PTH — best overall balance and 3D clarity while physically blocking outside noiseHD 598 -- open, good overall balance, mellow soundAKG

The sound from very low through very high frequencies is "smooth" and well-balanced, natural and not overpowering.

Overall, it's not the prettiest headphones and nowhere near comfortable, but it does provide a great balance between true sound and unique playfulness that will be hard to find elsewhere

You can lift the veil of HD650 and give it a close perfect balance over the whole frequency range with just one piece of a nice custom cable.2

You will be very pleased with the amazing sound quality you will hear every thing in well balanced in even tone as for nothing triumphs anything out

Nice balanced sound, non-fatiguing for longer listening sessions.

It gave a near perfect balance which HD650 was slightly lacking

The sound is very clean, smooth, balanced

Nice balanced sound, non-fatiguing for longer listening sessions.

The phones provide great tonal balance

These are well balanced - they are slightly warm and musical compared to pure 'flat' studio monitors, but there's not overpowering frequencies, anywhere

Id hold out for another crazy B&H or Adorama deal on

For softer pop songs and guitars, "Acoustic" brings out the lighter more ethereal tones, but stay away from the flattening abomination called "Pop"; if you want a fun punchy pop song, I'd recommend "R&B", it may be a bit on the smooth side bass-wise, but it does the job well

Even a colored one may often be difficult to tell apart in a Double A/B Blind Test

If you like a laid-back, really mellow phone with no personality, you might like these

I am etiher getting accustomed to the sound or they are improving as I use them more

In excellent condition as well--almost as if they were never opened :D Thank you!

So I looked at Sennheiser other phones as well as

and I absolutely love them months after purchasing just as much as I did the first day.

The HD650's may not have the fancy technologies of orthodynamic or electrostatic units, nor the pricey parts and accessories, but they definitely sound nearly as good and even better in some ways

I have found they sound marvelous with vintage Marantz receivers that can be obtained inexpensively, as well as from modern dedicated headphone amps

The headphones were nice enough to put the Braille letter L on the left side but the cable has no such thing.

If you like a laid-back, really mellow phone with no personality, you might like these

I am etiher getting accustomed to the sound or they are improving as I use them more

In excellent condition as well--almost as if they were never opened :D Thank you!

So I looked at Sennheiser other phones as well as

and I absolutely love them months after purchasing just as much as I did the first day.

The HD650's may not have the fancy technologies of orthodynamic or electrostatic units, nor the pricey parts and accessories, but they definitely sound nearly as good and even better in some ways

I have found they sound marvelous with vintage Marantz receivers that can be obtained inexpensively, as well as from modern dedicated headphone amps