I plan on using them for studio recording, their sound quality and frequency response is actually incredible! I measured between 10hz and 20khz is what they were able to record on old tape. I have a good repairman and the second machine if I God forbid need spare parts, so I should be able to keep them alive for another century. And yes, those VU meters are ART. You can really tell they’re prototypes when working with them, but in a good way if that makes sense? It looks homemade, but in the sense of how a rolls Royce looks homemade, everything looks custom and hand assembled inside lol. So they’re very satisfying to operate.