Received my Bqeyz KB100 this week, after three days of playtime, these earphones are not the routine chifi stuff. It's USP is fatigue free listening. Smooth+almost balanced tone+timbre makes listening sessions quite fascinating. Balanced/Neutral signature lovers should definitely gives this a try. Treble is slightly mellowed with silver plated cable I got from penon as a free gift. Stock cable performs better those earhooks are a pain. I've been using them Spiral dots+my audio modded smartphone. They soundly totally V-shaped with stock ear tips. Tip rolling and vent taping allows tweaking SS to one's liking. Spiral dots elevate mid+soundstage considerably over stock tips and secure seal gives bass oomph and rumble.
Coming from CCA, KZ, and that under $20 piezo maniac these have a different feel to it. C10 seems closest in terms of signature and performance but KB100 beats it in the low end. Piezomainacs although sound more airy+have natural-esque mids than KB100. Zsn is a different beast and pound for pound it doesn't stand a chance against any one of the above listed IEMs. But I still love them to the bits because of the fun factor and the price to quality ratio. They're not perfect but enchanting.
Although these are my initial impressions and it may change after cable rolling as I might swap it for a cable with mic. Overall, for $50, it's punt worth taking. Don't how it fares against T2 or T2pro but BQEYZ is a brand which I will always have on my watchlist. They have something unique about them.