Shure SE215 vs AKG K553 Pro

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.

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.

6 types of plugs (silicon/ foam: S/M/L).

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 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.

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.

Shure provides a warranty against defects in materials or manufacturing for two years.

The K553 Pro's earpads feature pleather materials which feel supple on the skin. Inside, the quality foam should provide ample cushioning. The headband also features a pleather surface and has some padding, which should help ease the pressure off of your head.

The sound is clear and accurate, and it should be very easy for the listener to pick out the details in the music. The bass level is just right without sounding boomy or muddy. The mids sound natural and neutral so these frequencies do not jump out of the mix. The highs are slightly extended, but do not make the sound harsh in any way.

These headphones have very good build quality. Solid plastic and durable-feeling plastic is used for most of the headphones' parts. The matte finish adds a softer and more premium feel to the plastic surfaces. The headband is made of metal so it can handle some flex without breaking.

The closed design helps to greatly minimize sound leakage from these headphones. People near you will not hear what you are listening to when using these headphones. Also, the pleather pads allow for a great seal which further helps to minimize sound isolation and block outside noise from interfering with your listening experience.