I have a friend who powers his front end/preamp from a bank of lead acid batteries with an inverter essentially to combat frequent power outages. Many inverters do not provide the pure sine wave output that is ideal for audio components. My friend reports some sonic benefits from his setup. I too have experimented with various types of battery directly powering a music server and find that each battery contribute its own sonic signature. Batteries are not noiseless and ideally need to be carefully selected and filtered in some way. In an audio system the battery will impact the sound just like any other component. Personally, I’d be hesitant to spend $3500 on a battery to find out whether I’ll like how it sounds.
Tesla Battery as a power supply?
I was flipping through the newest issue of TAS and saw a short announcement about a new battery power supply that will cost $29,000. Expensive by any stretch. It occurred to me, I wonder if the new Tesla batteries - though designed to be used as part of a solar regenerative household electrical grid - might offer some of the same benefits i.e. lower noise floor, less power line grunge, etc. Plus they're only supposed to be around $3500 each, a relative bargain compared to hi-fi specific rigs. Any thoughts?