With both RCA input and input on the back of the housing, the A30 can also fulfill a function of preamplifier with hardware volume control.
It benefits from the presence of powerful and precise operational amplifiers (OPA1611 OPA2134 &). In addition, TI OPA2134 is mounted on DIP-8 support (removable), which will allow anyone to experiment with different sound restitutions and eventually rediscover its favorite sound.
The hardware volume control is made possible thanks to an ALPS potentiometer. These are particuluèrement appreciated in the audio world for their precision, their respect for the sound and their reliability.