So are you kinda saying you like the LZ A4 more? If yes how so just the bass? How do other aspects compare?
My comparison (Master with dampened Silver, A4 with black/pink filters):
Bass: A4's bass sounds thicker, reaches deeper. Masters' bass is faster and more defined/detailed. - Draw.
Mids: A4's mids are laid back and smooth. Not devoid of detail, but nothing to rave about either. The Masters have coloured/enhanced mids that offer more body and detail in comparison. A4 has a slight edge when it comes to layering and imaging, though. - Winner: Trinity Master
Treble: This is the point where the A4 really pulls ahead. Treble detail and control is a level or two above the Masters' slightly loose and uncontrolled/splashy treble. - Winner: LZ A4
Imaging + Stage: While I wouldn't call the Masters mushy, they simply can't keep up with the A4's spacious sound and instrument separation. The Masters have a rather small stage with a diffuse instrument positioning. - Winner: LZ A4
Ergonomics: Both IEMs don't isolate very well. A4 have quite an awkward fit, but can be worn cable up or down. Masters fit much better, but only cable up position can be used. The Masters' cable, by the way, can be frustrating. Prepare for some serious Gordian knot action. - Draw!
Packaging and accessories: Both companies are very generous with accessories. - Draw.
Conclusion: The Trinity Masters are a steal for the 70 bucks many of us paid for them. At 180 continental European bucks, there is some serious competition. Some of it even from the same company, which is kinda bizarre. The LZ A4 are definitely the technically more proficient IEMs and are only marginally more expensive. But if you like your mids and prefer a fast and detailed bass, the Masters should be more interesting.
More detailed impressions will follow