A tube boost in front of the amps. Push it and they push back — warmer, louder, and meaner the further you turn.
No meters to read. Banked low, the tube warms. Wide open, it bites. Turn the knob and watch it go.
Hot range: the tube runs brighter and the top of the knob turns into a shove.
The one big knob.
From a gentle lean to a full shove into the amps. Everything in Coro after it — the amps, the post EQ, the effects — feels it.
0–100% · the tube glows with itNormal / Hot.
Normal is a clean lift with tube warmth. Hot rewires the top half of the knob into saturation — the glow goes past red.
normal · hotBright.
One switch, not a tone stack. Bright opens the top end before the boost hits the amps — the classic treble-booster trick.
bright on/offEvery copy of Coro includes Coro Boost, sitting just before the amps — right where a boost belongs. Just want the boost? It also runs as its own plugin in any host.
AUVST3Standalone macOS