Echoz.7z

: Using the LZMA and LZMA2 algorithms, 7z can compress text-based files and source code 30–70% better than standard ZIP formats.

: It is designed for live use with direct controls and no hidden menus, though it lacks the cartridge-swapping versatility of the larger Tiptop Z-DSP. The .7z File Format (7-Zip) EchoZ.7z

If "EchoZ.7z" refers to a specific archive file you have encountered, it uses the , which is widely regarded for its superior compression ratios compared to standard ZIP files. : Using the LZMA and LZMA2 algorithms, 7z