An improved DC/DC converter design for Alpine 7909.
Uses a Traco 6W converter to get symmetric +/-12V and then ultralow noise, ultrahigh PSRR linear regulators (LT3045, LT3094) to regulate the voltages down to +/-10V.
The board is smaller than the original and fits nicely into the space available.
Warning The PCBs have not been tested as of now, use at your own risk.
Most components specific to this are contained in the CSV file. Please note that it does not contain components I had already at hand, so double check it against the schematic.