Often, especially during musical peaks, the power  supplied by the battery may not be sufficient for the amplifiers, which thus have inadequate transient  response.
The Capacitors are available in 1 farad size,  with or without digital voltmeter. They were developed to assure exceptional performance in terms of accumulation of energy and, especially, response speed in complete safety. Installed close to the amplifier, the Tanks offer easy-to-check improvements in terms of a solid high and low dynamic range.