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The only difference I was able to notice was that the 950BT are a little louder but the 650BT has more bass.
Sorry, there was a problem. Please try again later.Hi, Lisbeth, The maximum frequency response of MDRXB950BT is 28,000 Hz (using supplied cord) while the MDRXB650BT has 20,000Hz. For more details, please check these links: https://docs.sony.com/release//specs/MDRXB950BT_B_mksp.pdf https://docs.sony.com/release//specs/MDRXB650BTB_mksp.pdf Thanks! -Vincent
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