I've had this preamp for well over a year now and it's been used on every source that's come through my studio. I've tried over 20 preamps since having this and this has the greatest and fullest sound especially when it comes to the low end. Since owning the P1 and later the Baxy, this has been my go to chain for full rich sounds. I have both transformer options and honestly they're both so beautiful. I ended loving the Jenson slightly over the Lundahl, but having 3 different mic pre options (without transformers, Jensen & Lundahl) in one preamp is insane. Especially for that price.