The problem is basically just the price – they Charge lots a lot more than the WH-1000XM4, however the discrepancies are not absolutely night and day. In addition, you recuperate functions and audio quality from the Sennheiser Momentum 4 Wireless at a similar price (the Sony are greater for ANC). https://hightechheadphones34455.dsiblogger.com/67664235/new-step-by-step-map-for-hightech-headphones