Air Tight Opus 1........

now have about 20hrs or so on it, keeps getting smoother and more detailed

@ckr1969 I also have the Atlas Lambda Mono. The SL is similar sound signature and performance.

@dwette I haven't heard the stereo version of your cartridge however I have heard the mono, fine cartridge, I think its preference at this level

Would be curious how it stacks up to my Lyra Altas Lambda SL for about the same price. Not that I plan to make a change anytime soon or ever.

Everything you describe about it matches how I described my Lyra after I first started using it.