There are two balanced armature drivers which handle the production of high frequencies, resulting in highs that are really detailed and have a lot of sparkle and detail to them.
The 2 BA drivers are complemented by a dynamic driver (hence the triple driver designation) which handles the mids and the lower frequencies. Mids are smooth and clear while the bass is powerful yet at the same time is well controlled.
The inline remote has a metal casing with three buttons that allow you to control tracks, respond to calls as well as adjust the volume.
The remote is compatible with Android and iOS devices.
The headphone cable is covered by a fabric sleeve. Not only does this make the cable look and feel expensive, but this also adds to the cable's durability. This also helps prevent the cable from tangling easily.
These in-ears incorporate a lot of metal in the build, with the earpieces, the in-line remote as well as the 3.5mm plug predominantly made out of metal. This gives the headphones nice heft and a quality feel.
Along with the headphones, you also get silicone and foam ear tips in multiple sizes, a leather carrying case as well as an airplane adapter. These are functional accessories that definitely add a lot of value to the overall package.
The SE215's 6.4-ft. cable is very thick, and further reinforced at the left/right split point. Reviews confirm the durability benefits of its heavy-duty design. If it ever does break, the cable is built to detach safely from the earpieces, allowing replacement.
SE215 earbuds use tough plastic earpiece shells, have a robust kevlar-reinforced cable, a sturdy Y-splitter that's difficult to bend and an L-shaped plug that adds additional strain relief. They won't break if you snag them, drop them or sit on them. They're also completely sweat proof so you can use them while working out without having to worry about damaging them. They're durable enough for professional stage use for which they were specifically designed for.
The optimized angle of the earbuds, over-ear fit, and memory ear tips ensure that the earphones stay in place comfortably regardless of situation. These are also sweat-proof, so they're a great option for active use.
The SE215 earphones have a negative profile, optimized nozzle angle, over-ear fit and memory eartips that ensure the earphones stay in place comfortably regardless of situation. You can even lie on your side with them.
Bass is emphasized so there is a good bit of thump while staying controlled. Mids are rich, highs avoid sibilance, though they're a bit rolled off.
Soundstage is okay--instruments are separated out enough for them to not sound like they're all coming from the same place, but it's not particularly wide.
The memory foam eartips mold to your ear to provide amazing sound isolation, though there's a bit of a learning curve to using them. You have to press them together before putting them in and then allow them to expand in your ear. Once expanded they will take the shape of your ear and that way provide excellent noise isolation.
The earphones also come with silicon tips which are easier to use than the foam ones and also last longer.
It may take some getting used to memory cables and there's a bit of a learning curve to putting the earphones in with memory eartips. At, first memory cables may seem a bit stiff, but after they're broken in, they're generally more comfortable than typical wires. There's even a wire sleeve that helps form the wire bundled with the earphones to help combat this issue. As for memory eartips--every time before putting them in your ear you have to press them together and then allow them to expand in your ear.
Despite being made out of metal, these in-ears are still fairly lightweight, so wearing them for long periods shouldn't be a problem. The included ear tips are also quite soft, providing good cushioning and seal.
The highs of these headphones are not too sparkly or airy, yet still has good detail. This results in a smoother sound. Mids are forward and clear, while the bass has good depth without creeping up on the mids.
Overall, these headphones are quite fun to listen to and can work with pop, rock, hip-hop and even metal. These are not the best though if you tend to listen to music with a lot of detail and intricate parts like jazz or classical as these do not offer a high level of detail reproduction.
The M2's cable is braided and covered with a sleeving material, making it significantly more durable than other cables. It also makes it extra resistant to tangling.
With the M2, you get 2 types of ear tips with three sizes each, a shirt clip to prevent the cable from moving around when worn and ear cable guides to help keep the headphones in place.
Not really a con, as headphones are primarily for listening to music. However, this can be inconvenient when used with a smartphone and you have to take calls.