- C7 footprint incorrect - through-hole pads too small for component
- RV3 footprint clashing with PL4 and PL5 - moved to provide additional clearance
- Chrome output from IC9 corrected
- Pins 2 and 3 of IC 10 reversed
- C24 low at 4.7uF, increased to 47uF
- R34 high at 8K8, reduced to 8K2ohms
- R33 low at 1K2, increased to 1K8ohms