I represent the Bacch and have tons of videos about the product in my YouTube channel... Including 3rd party reviews, walkthroughs, interviews with Edgar and more.
I’ve sold dozens of them in just a few months with everyone ecstatic about the results. I would encourage you to visit Edgar’s room at CAF or come to my house in Houston for a demo. I’ve had people come as far as Thailand who have ordered after hearing it.
It’s far from a gimmick and actually what we’ve been listening to for years as "stereo" has actually been the gimmick. No matter how great your gear, you are listening to different degrees of crosstalk that corrupts stereo imaging.
The Bacch doesn’t add any spatial cues not already in the recording, but it eliminates the crosstalk that corrupts you hearing all of it. There are additional benefits in terms of time alignment and fixing comb filtering, but those are secondary to the crosstalk cancellation.
The in-ear measurements and head tracking are two reasons why this exceeds many efforts in the past to correct for crosstalk... Plus it ignores mono material which previous efforts had difficulty addressing.
The bottom line is it’s a product you must hear and likely will buy after an audition. Edgar is the only designer I know who WANTS you to do an A/B demo and facilitates you being able to turn it on and off on the fly to hear for yourself.
My membership section of YouTube has tons of users and we regularly exchange tips in recordings that have spatial cues that the Bacch reveals like no other.
If you can’t audition the Bacch live, I would encourage you to join my YouTube channel membership section where you can talk to existing owners.
Plus, if you are in my group, you can send me a music file and some basic measurements about your speaker distances... Then I can create a Bacch filter for the song and send it back to you to give you a taste of what it sounds like. Obviously, it will only be a taste and you should pick a recording with good spatial cues in the recording, but that’s been as convincing as a live demo for many people.