60W Toroidal Power Transformer 110V 220V 230V to 12V 15V 18V for Audio Power Amplifiers Product Overview 60W low frequency toroidal transformer designed for audio power amplifiers. This ring-type transformer offers superior performance with high efficiency and minimal noise operation. Manufacturer Profile Shenzhen Zhixiangyuan Electronics Co., Ltd. is a high-tech enterprise specializing in custom inductors, coils, and transformers. Established in 2011 with over 2000 square