The Aria incorporates many innovative design ideas including a self-adjusting servo control to keep the MC input circuit at its optimum, compensating for any variations in ambient or operating temperature. Both stages have their own separate input sockets and input pre-amplifier circuitry. This enabled Rega to design bespoke input circuitry for each cartridge type without compromise. Signal switching is performed at high level and low impedance ensuring there is no degradation of the signal.