This kit comes from Total Audio Control and it contains everything needed to build a 2.5A/3.8A linear power supply:
- +/-15V PCB board,
- +48V PCB board,
- All the true hole components needed,
- All the wires needed,
- All the mechanical components needed,
- Power and voltage region switches,
- 2 meters 5-wire cable (+15V, -15V, 48V, ground and earth),
- Pre-assembled sheet metal case and heat sink.
Assembly instructions are here.