News

Why should audio amplifiers use toroidal transformers instead of switching power supplies?

There are several reasons why audio amplifiers use toroidal transformers:

Better sound quality: When toroidal transformers output AC voltage, they can basically eliminate the influence of power supply clutter and noise. This ensures low noise and high fidelity when the audio system is working.

Less EMI interference: The radiated and scattered electromagnetic interference (EMI) generated by toroidal transformers is very low, which helps reduce interference and distortion of audio signals.

Stable output: Since toroidal transformers are traditional power supply designs, they have higher stability for output voltage and current, and are less likely to have problems such as sudden power on or off. Switching power supplies may have problems with output fluctuations and poor adjustment.

Long life and low maintenance: Toroidal transformers have a longer service life and relatively low maintenance costs, such as the need to add filter capacitors to the drive circuit.

In summary, although switching power supplies have some advantages over traditional toroidal transformers, such as lightness, high efficiency and energy saving, audio amplifiers need to consider factors such as sound quality and stability, so it is more appropriate to use toroidal transformers. EEIO Transformer's toroidal transformers have many categories: isolation transformers, autotransformers, waterproof transformers, floor heating transformers, audio transformers, low-frequency transformers, etc. They are all made of silicon steel sheet core + pure copper wire + polyester film and other materials. They have the characteristics of small magnetic leakage, low noise, fast heat dissipation, high efficiency and long life, and can meet the requirements of different equipment.