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i recently purchased beta's and i'm not satisfied with the highs and lacks real detail to my taste.i found them to be boomy bassw hich is unlike my taste
so i'm planning to buy another iem with nice highs with sparkles, detailed, crisp and clear, open and non fatiguing, importantly more musical.
how do isurus shines against brainwavz m1 and m4? (i omitted m2 from my option since i read they sound warm n thick)?
which 1 of them has better detail/clarity/separation/soundstage and sounds open n airy??
is isurus gonna beat them in most of the department?
please help me to choose
I am 100+ hours into burn-in with the Isurus, and was comparing them to some Brainwavs M1s last night, along with the Monoprice 8320s, Philips SHE-3580s, and Hifiman Re0s. All IEMs were fitted with Shure Olive tips by gluing de-cored olives to stock IEM cores using silicon adhesive, for whatever that information is worth (I have found that Olives enhance bass without significantly muffling high frequencies, reduce ambient noise present in recordings, block out my coworkers’ conversations better than Sony Hybrids and last much longer than Comply tips, both of which I with my unkeen ears find to have mildly unique yet similar sonic effects to Olives).
To me, the M1s have boomy bass, mids are fairly forward, and there is good detail in the treble. I found the soundstage to be just a little behind the Re0s. I actually bought the M1s for a friend whose music selection is mostly classical, so minus the boomy bass (which I can minimize with EQ settings) I found them to suit her taste well.
Thus far I have not found the Isurus to be open and detailed. Sonically they remind me of a combination 9” woofer and 2” tweeter—just beyond boomy and into a low range nearing sub-bass, with treble that is sufficient yet slightly muffled. They would do a really good job of replicating the rumbling of a hot rod engine, so for any hot rod engine acoustical enthusiasts out there, the Isurus are definitely for you. I am going to keep burning them in to see if anything changes, but so far I’m not digging them—not to say they don’t sound good given their price tag.
Of the three ‘discovery’ IEMS I have been listening to, I am so far most impressed with the SHE-3580. High-end detail is approaching that of the M1 (and I have yet to fully burn in the SHE-3580s), low frequency response is incredible for the price, as described elsewhere. The mids are a bit lacking, and sound is not quite as open as the M1/Re0, but for the $7 they cost me these sound pretty good overall to my ears.
In sum, I would not turn to the Isurus if you’re looking for a more detailed and open sound signature. Shipping location issues aside, If you want something with a lot of detail and don’t care a whole lot about bass quantity (or are willing to purchase an amp, for example the ZO, to enhance bass quantity), and your budget can afford it, I would head towards something like the Re0s or Etymotic HF5s. I keep buying the HF5s as gifts when I am convinced I should swap my Re0s for a pair, since to me they sound similar but would do a better job of blocking out the office noise (combined with the Olives, of course). If you're looking for something a little less expensive that emphasizes detail, you may want to consider the SHE-3580s, or one of the Brainwavz models, prior to the Isurus.