I am in the final stages of building a fully analog synthesizer. Instead of using +10V, GND and -10V, could I switch these voltages to +20V, +10V, and GND to save weight, bulk, and size of a power supply that has to generate -10V? Would a voltage change generally affect audio circuitry or affect output voltage and ruin other audio equipment?
simulate this circuit – Schematic created using CircuitLab
Basically, is it the relationship between voltages or amount of voltage in this case? And what's the best way to create +10V on the board, since the solution in the schematic most likely isn't very efficient?
save weight, bulk, and size of a power supply
... why do you believe that is the case? \$\endgroup\$