Just to mention there is no power or dynamics issue with low-powered portable CD players. That’s actually one really big advantage of low mass systems, the ability of teeny tiny AA or AAA Lithium batteries to provide full dynamic range without constricting dynamics. You just can’t use certain headphones like some Sennheisers. I use a vintage SONY MDR-v700 and Grados and others, no problemo.
Going Battery Powered
I have a number of components that run off of 12V DC power. This includes my DAC, preamp, tube buffer, etc. I’m looking into powering them with batteries instead of 120V AC power supplies. Does anyone have any input on if this is worth my time? Seems like DC power is the cleanest power you can get in this situation. I’ve heard batteries can have reduced dynamics but I plan on using as big of a battery as is reasonable, most likely a large sealed AGM type battery. Do I need power supplies/voltage regulators if I use a large battery and only power low draw components (no power amps); e.g. the max amp draw is probably around 1-2 amps, if that. If I do, does anyone have a link to a design for the power supply/voltage regulator? Thank you.