Summary: These sound excellent and very accurate. If you want your head to shake from bass beats these aren't for you. IF you want to use them with a computer or iPod, you will need some type of amplification
Pros: Will built, accurate sound, very comfortable.
Cons: Too hard to store. Not portable at all, 1/4" plug. No adapter to 1/8".
Summary: This is my first time buying a high-end audiophile quality headphones so I am basing my review solely on how the SD700 compares to my low to medium quality headphones of the past. I have been listening with the SD700 for about two weeks now and I have nothing but praise for these cans at this point.
Pros: Sounds absolutely awesome to me although I admit I am NOT an audiophile at this point and do not have experience with other high-end headphones to compare it's actual sound quality and reproduction. Build quality also seems very good and leaves me with little doubt they will last a lifetime.
Summary: I have had my HD700 for less than a week but I think I can make some reasonably accurate comments about it after about 25 hours of listening. I should point out that I my comments are influenced by my experience with a well-used Sennheiser HD600 with Cardas cable. I have used the HD700 with a PS Audio and a Musical Fidelity headphone amp. To say that I was underwhelmed with these cans when I first listened would be an understatement.
Pros: A broad, deep and well-defined soundstage. It has a better cable attachment system than the HD600 headphone. They look like they will last a long, long time. They fit on my head securely but I've been wearing them for 4-5 hours at a time without fatigue. They seem equally competent with pop, soundtrack and classical selections.
Summary: On some level, I find it presumptuous to think anybody cares to read my opinion on a set of headphones. Yet, here I am offering my experience with the Sennheiser HD 700 headphones. As a preface, I'm just a rock and pop music lover. I don't purport to be an expert on studio recording or production, and respect professional audio and audiophile journals for their knowledge and perspectives.
Pros: Sturdy and lightweight construction; Comfortable; Fully envelopes ears; Sound is clear, honest and intimate. For me, the HD 700 produces private music listening nirvana at a price I can afford. MY STEREO HI-FI SET-UP: Onkyo A9070 amplifier; Onkyo C7070 CD player; Technics KAB-modified audiophile SL-1210MK5 turntable with an AT 440MLa cartridge; Axiom M80 tower speakers. [NOTE: Headphones powered directly by Onkyo equipment; i.e. no separate headphone amp.]
Cons: None. [NOTE: The HD 700 headphones are ideal for home audio listening and appreciation, and not designed or engineered for sound isolation. My noise reduction rating acknowledges this reality. I seldom listen to music at greater than 90dB, so leaking of sound is not a problem in my household.]
Summary: Great headphones for audiophiles. If considering these headphones, you do need an amp for it and a decent DAC as well. It makes the headphone do much more enjoyable. For the original price, it's not worth hit, but considering the recent price drop, it's a great value.
Pros: Fantastic sound quality, big soundstage
Cons: Not as deep in bass but these are open headphones after all. Wish it came with more accessories like 1/4 to 1/8 adapter.
Summary: Falls into a very small niche market. The thought of spending $700+ on a headphone will likely seem outrageous to many people. However for those who know what they're in for and have the equipment to power this bad boy.
Pros: detailed, large sound stage, fun sounding, VERY VERY comfy
Cons: Without a proper amp, will notice a treble spike, Requires a decent amp to bring out it's full potential
Summary: HD700 has excellent sound with very good 3D image, broad sound stage, crystal high, tight heavy base, full mid-range. It needs a headphone amplifier to get the above sound quality though. My HD700 is still in burn-in period. But after 10 hour burn-in, I could tell the sound is improving. Very happy with the product.
Pros: Excellent sound, comfortable, very good build quality
Summary: I've used most of the old-school brands (Grado, AKG, Sennheiser, Sony, Koss, David Clark, ...) and have tried several of the Jonny-come-latelys, and the HD700s are simply the best for comfort and sound that I know.
I can wear them for hours and never get fatigued.
Most of the others that I've heard fail relative to the HD700 in terms of either wearability or audiophile sound.
I use an after-market cable that's shorter and lighter than the stock cable.
Pros: Comfort, light weight, spectacular sound: response and imaging