ZXY3012 150/600:50K Permalloy Audio Transformer High Performance Signal Transformer for Audio Amplifier Product Overview ZXY3012 150/600:50K Permalloy Audio Transformer is a high-performance professional signal transformer built for audio amplifiers. Featuring premium permalloy core and 150/600:50K impedance ratio, it delivers low magnetic loss, flat frequency response and strong anti-interference performance. It solves impedance mismatch, ground-loop hum and signal