The Audeze LCD2-Classic/LC2C are better critical listening open-back headphones than the Stax SR-L300. The Audeze have a very solid build, and their 1/4” connection is more versatile. They deliver more accurate bass and don’t lack low-bass like the Stax, but their mid-range is slightly overemphasized, and their sibilants might lack a bit of brightness. The Audeze are also quite tight on the head and are heavy headphones. If you’re looking for critical listening headphones for music that don’t have any low-bass like classical music, the Stax might be a better option; just be careful with them, as they feel very flimsy.