Amazon Product: SOULWIT 40mm 32 Speaker Driver for QC35 QC45 - REVIEW - B0FY3DNWSL

{
  "reviewBody": "ＭＡＩＮ ＲＥＶＩＥＷ ↴\n\n𝗗𝗶𝘀𝗰𝗹𝗮𝗶𝗺𝗲𝗿: While I own the Bose QC25, I do not intend on modifying my Bose headphone. I am however moderately experienced with driver replacements and modding headphones/IEMs in general. \n\nInstead, I installed these into a cheap pair of ANC headphones I got from Winners. Figured these drivers would make the headphones punch above their price; it did. Well, kinda.\n\nI graphed a rudimentary frequency response curve, see the attached pic.\n\n𝗦𝗼𝘂𝗻𝗱 𝗔𝗻𝗮𝗹𝘆𝘀𝗶𝘀: Compared to the QC25, these drivers are much bassier. With ANC turned off, the bass becomes incredibly boomy and bleeds into the mids. With ANC turned on, it's more controlled yet still dominates the sound. I like how dynamic and textured the bass is, though sometimes it can feel a tad slow. Midrange frequencies come off as full-bodied likely owing to the bass response, and they are relatively natural sounding. When we get to the treble, it's a bit of a mixed bag. By no means is the treble recessed, but from my ears it does seem to roll off a bit early, and hence it sounds a bit dry. In other words, treble extension isn't the best, both in terms of frequency and transients. But you do get peaks in the lower to middle treble; this creates perceived brightness, but it isn't very well tuned. The treble sounds more artificial than natural, and becomes harsh sounding at loud volumes. \n\nOverall, compared to my QC25, these replacement drivers are like a more bassier, darker sounding version. This is actually something desirable though, as I often found the QC25 lacking in bass and too fatiguing in the high-mids to treble area. I just wish the treble was more better tuned.\n\nＡＤＤＩＴＩＯＮＡＬ ＴＨＯＵＧＨＴＳ ↴\nThese drivers feel quite heavier than typical ones. I weighed them, they are 17g each.\n\nＣＯＮＣＬＵＳＩＯＮ  ↴\nWhile there's a lot to like about the sound, personally I had higher expectations for the treble. Compared to the original drivers of the headphone, I would say it's a pretty decent upgrade, but not by a lot. I think most people will enjoy the sound though. Furthermore, I can't quite say they are \"OEM-Like\", at least compared to Bose. But I see these drivers are advertised for Beats as well, which probably is a more accurate comparison. ",
  "reviewTitle": "Solid upgrade for cheap headphones. Incredible bass, but treble could be tuned better.",
  "asin": "B0FY3DNWSL",
  "productTitle": "SOULWIT 40mm 32Ω Speaker Driver for QC35/QC45/QC25/QC15/QC2/QC3/AE2/OE2, Studio/2/3/Pro, Solo/2/3/4, Razer Kraken 7.1, AKG K55, Marshall Major II, Replacement Headphone Repair Part - 1 Pair",
  "savedAt": "2025-12-10T06:55:23.505Z"
}