SONY TA-N330ES Sony Power Amplifier Used Item Working Condition Operation confirmed for outputs A, B, and A+B from inputs 1 and 2 in stereo mode. Operation confirmed for outputs A, B, and A+B in mono mode. All functions are working. The transformer is a round toroidal type. Input 1 is likely modified. There are no operational issues. Equipped with an attenuator (volume), so it can be used by directly connecting a player without a preamplifier. poweramp stereo Stereo Amplifier Bi-wire Bi-wiring