Bose QuietComfort Ultra Earbuds vs Technics EAH-AZ80

“I also have the AZ80 and PX8 combo. However, I ended up returning the AZ80 today because the left earbud started to hurt after wearing it for an hour. Thankfully, it was still within the 60-day return window, so I can use the credit to upgrade to the AZ100. Can't wait to try it out! I feel like the AAC on the AZ80 and PX8 sounds pretty similar, but I can definitely hear a difference when I use the wired PX8 with ALAC. Is it just me, or is this true when using AAC on both? Maybe my ears aren’t great at distinguishing music quality?”

“Ultra struggles with multiple connections and hissing sound. Ultra earbuds, identical multiconnections, occasionally when I walk, the sound cuts out as if I've turned them off, yet they remain connected, quite strange. There’s a hissing sound when I use ANC, and at times, I notice an odd noise after watching videos on YouTube, TikTok, etc. QC makes a buzzing sound when I transition between YouTube videos, and 2 times I had disconnects. QC earbuds occasionally stop working unexpectedly, I never configured them to turn off. The left earbud doesn't function when I take it out of the case, only when it feels like it. The multi-connection feature is also poor; they lose connection randomly and then reconnect. Wtf is this, right? I do possess more earbuds and headphones, and in 27 years, I have never encountered these problems with a new product priced at half of Bose items, like Melomania M100, Sony LinkBuds S, Technics AZ80, Anker Q35, etc. I can't express how terrible the customer service is, absolutely awful. The comfort and ANC are excellent with Bose; I definitely prefer the sound over Sony's, no contest! I share this so you know what are the true experiences with this product, you can ignore me and buy all of them, but please to not hate people that tell the true, I hope I didn't waste my time typing this much.”