When comparing Shure SE215 vs Bluedio T4, the Slant community recommends Shure SE215 for most people. In the question“What are the best headphones?” Shure SE215 is ranked 39th while Bluedio T4 is ranked 46th. The most important reason people chose Shure SE215 is:
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.
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Pro Fantastic sound isolation to block out unwanted noise
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.
Pro Comfortable once you get used to them
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.
Pro Rich, full sound
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.
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 for which they were specifically designed for.
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 a warranty against defects in materials or manufacturing for two years.
Pro Will stay in place in the ears
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.
Pro Great build quality for the price
These headphones should last you quite a while, as they are built well. The hinges and the headband adjustment are made of metal, with sturdy plastics on the earcups. These should survive being thrown into a bag and minor drops without issue.
Pro Fairly neutral sound
The sound is on the neutral side instead of boosted bass or highs. Overall the sound has good clarity with okay details on the treble along with tight and low-end. The mids are slightly recessed though.
Pro Okay noise cancelling performance
You won’t easily hear engine noise and the like. The active noise cancelling is quite effective at filtering out low-pitched, droning noise.
Pro Can function as Bluetooth or wired headphones
You can continue using these headphones even when the battery runs out. Aside from Bluetooth connectivity, these also come with a USB Type C to 3.5mm cable, so these can be used as wired headphones. You won’t get active noise cancelling without battery power though.
Con Need some time getting used to
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.
Con Inline mic and volume controls cost an extra $50
The supplied detachable cable does not have a mic or inline volume controls. They can be added by upgrading to the M+ cable.
Con You’ll still hear high pitched noise clearly
You may still hear high pitched noise like female voices and sudden bursts of laughter. The noise cancelling is not very effective at filtering mid to high frequencies.