3 in 1 Power Supply
To achieve high performance and good sound, all kits should be fed by an adequate power supply. As described in the LM1875 and TDA7293/94 projects the power supply for op amps is critical. High PSRR and low noise is a must.
The board shown bellow combines 3 functions:
- Power chip power supply – provides power supply for TDA7293
- Op amps power supply – ultra-low noise and ripple +/-15.0V
- Speaker delay and DC protection
All you need is an adequate transformer or switching mode power supply.
3 in 1 power supply – $79.99
Low noise power supply and speaker DC protection Kit