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Pro Thick, replaceable cable
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.
Pro Two year limited warranty
Shure provides warranty against defects in materials or manufacture for two years.
Pro Outstanding build quality makes them long lasting
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 which they were specifically designed for.
Pro Rich, full sound
An overall full sounding pair of earphones. Bass is emphasized to give a bit of a thump while remaining well 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.
Pro Fantastic sound isolation to block out unwanted noise
Memory 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 if you prefer not to use the memory tips, but with silicone tips you're giving up the great sound isolation.
Pro They are sweat proof and stay in place which makes them great for exercising
The optimized angle of the earbuds, over-ear fit, and memory eartips that ensure the earphones stay in place comfortably regardless of situation. They are also sweat-proof, so are a great option for physical activity.
Con Inline mic and volume controls cost an extra $50
Con Not very secure at first - they have a learning curve and require breaking in
Despite over-ear cable placement, the Shure SE215s can wiggle out easily. Once the cable breaks in, this becomes less of a problem. There's a wire sleeve that helps form the wire bundled with the earphones to help combat this issue.
There's a bit of a learning curve to putting the earphones in with 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.