Sorry, I do not have any experiences with tda1541/43 (unless I heard one at one of the various audio shows) but my preference is definitely the NOS dac sound. I had the opportunity to audition the mojo audio dac, don’t recall which model, but it had the AD1865N-k chip and I knew it was for me.... I just wanted a tubed dac, as I really dig tubes! My prior dac was a schiit bitfrost mutibit and I rarely listened. It was underwhelming compared to my analog setup. Vpi, dynavector 20x2 low and herron vtph-2a. No surprises considering the price difference. After purchasing the AM Tubadour iii I was surprised at how close it came to my analog rig. I was certainly listening to a lot more digital, happily
Based on my positive experience with the tubadour, I elected to have it modified to the SE version, and an already excellent dac got even better.
I’d certainly love to hear them all in my listening space but that rarely presents itself. I can wholeheartedly recommend the Tubadour since you prefer NOS dacs.
Ashley might just pour concrete in my ears 👂
Stay safe out there