The Context’s headroom is about +3 dBu, but earlier firmware versions can run out of internal headroom with the decay cranked up on the room and hall algorithms. Context V1s built after April 2018 have the latest firmware. Please contact us if you have a Context with serial number 102-057999 or below and are interested in sending your pedal to us for a firmware update.
If it is clipping when the pedal is on with blend fully counterclockwise (100% dry), that might indicate a damaged op amp.