The HD 700 are well-made critical listening headphones with a comfortable fit and a durable design. They have an excellent audio reproduction and create a spacious soundstage, which makes them one the better options for critical listening. However, they may sound sharp and piercing on certain tracks and are not really practical for any other use case. They're not designed for outdoor use, and they leak quite a bit which may be distracting to the people around you.
The HD 700 look like a smaller version of the HD 800 S. They have a sturdy and durable build quality that feels well-made. They're comfortable, breathable and not too tight on the head which makes them a pleasure to wear for hours at a time. They're also relatively lightweight for their size. Unfortunately, they're still quite bulky headphones which makes portability a bit of an issue. They're also a bit unstable, have no control scheme and not suitable for outdoor use.
The HD 700 look somewhat similar to the HD 800 S, but with a more compact and convenient form factor. The ear cups share the same open design, but they're much smaller and fit a little better around most listeners' ears. They also feel just as premium thanks to the microfiber padding on the ear cups and the attention to detail given to the headband. They won't be the most fashion-forward headphones, and with their open-back design they aren't supposed to be used outdoors but their simple, premium feel, will satisfy most casual and critical listeners.
The Sennheiser HD 700 are very comfortable headphones. They have a large and spacious ear cups coated in a soft microfiber padding that feels nice on the skin. They're fairly lightweight for their size and don't exert a lot of pressure around your ears. Moreover, unlike the HD 800 S, the ear cups are not as bulky and do not extend all the way down to your jawline so you can wear them for hours and not feel any fatigue.
The HD 700 are not portable headphones. They do not fold into a more compact format, and the ear cups do not lay flat either. They're on the bulky-side of most over-ear headphones and will be a hassle to carry on you without a bag. They do come with their original box that you can use as a case, but it adds so much bulk that it's not practical to carry them in the box in most cases.
The HD 700 are not as well-built as the HD 800s but they still feel like sturdy, durable and well-made, high-end headphones. The headband is large and reinforced with a metal frame that gives it a bit more durability and flexibility. The ear cups are also decently dense and made of quality materials that won't easily break if you drop them once or twice. However, the hinges are somewhat similar to the HD 600 and HD 650 which is a bit thin and could be the main weak point of the HD 700's build quality.
The HD 700 are not stable enough for any kind of physical activities. They're able to maintain a stable fit under normal and casual conditions. However, if you use them while running or doing anything strenuous they will easily slip off your ears. They're not designed for sports and should not be used for that use case.
The HD 700 are great-sounding open-back headphones with an extended Bass, a good mid-range, and a well-balanced Treble. They perform relatively consistently across multiple individuals but have a slightly variable bass that depends on positioning. Their open-back design creates a spacious soundstage and their distortion and imaging performance is well above-average but not as good as the higher-end HD 800 S. However, they may sound too sharp and piercing on certain tracks, and like some of the other Sennheiser headphones, they have a slight bump in the mid-range that makes them sound a little muddy.
Very good Bass Range performance. Low-bass, is a bit lacking and the high-bass is slightly overemphasized by an average of 4dB. This makes the sound of these headphones noticeably boomy and lacking a little low-end thump and rumble.
Excellent consistency. The Bass Range of our Over-Ear and On-Ear headphones are measured on 5 different human subjects, 5 times each. The HD 700 shows a consistent response in the mid-range but a bit of variation with their bass. However, since they're open-back, the design allows them to rely less on an air-tight seal to create their low-end. The Treble Range also shows good consistency, but depending on the positioning, there could be up to 3dB of variance at 3KHz.
The HD 700 have a poor isolation performance. They're not designed to block ambient noise and therefore are not suitable to use in loud environments. The open earcups let noise seep into your audio fairly easily and also leaks a lot which is not ideal for quieter settings. These headphones are best used in isolation where the leakage level will not be distracting to those around you and you can take full advantage of the open design and incredible soundstage.
Weak Noise Isolation. These are open-back headphones and not meant to isolate, so they barely achieve any reduction up to 2KHz. Above that, they only achieve about 10dB of isolation, which is also poor.
Poor Leakage performance. The HD 700 have a very open design so they have a high amount of leakage. Most of it begins at 400Hz all the way to 20KHz which is a broad range. The overall level of the leakage is also very loud which will be distracting to those around you.
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The Sennheiser HD 700 are slightly better critical listening headphones than the Beyerdynamic DT 1990 PRO. They are noticeably more comfortable, especially since they don’t clamp as hard as the DT 1990. While both are open-back headphones, the HD 700 are more open-sounding. However, they do lack a bit of sub-bass, which is normal for open-backs. However, the DT 1990 PRO have pretty accurate bass, even if they are also open-back. The DT 1990 also feel sturdier than the HD 700, and they also come with a coiled cable, which is nice.