Test build 27: 2.5-b27 — DX7 voices dry, and KEY VELOCITY

DX7 voices played as M-VAVE's own firmware plays them: a voice picked from PRESETS is dry (it carried FM6's first sound's chorus 45, delay 25, reverb 35), and KEY VELOCITY (HOME menu → SYSTEM, KNOB 3; 60–127, default 100) sets how hard the keys play — at 127 the DX7 voices sound as bright as they were made to (PIANO 2: brightness 2290 → 3365 Hz); SLOOP's own sounds get about 1 dB louder (3.7 at most). The level table is measured again dry: within 0.5 dB. Fixed: build 26 worked out an unknown voice's level in the audio interrupt when a song section changed; now the main loop does.

Safe over builds 19–26: nothing is erased, no bank needs reloading. Going to plain upstream and back can erase banks 1–8 — save a backup in the editor first. Not a SLOOP release.