I ave had a number of battery dacs and my transport is run off a battery. IMHO A Dac and amp on a battery is very quiet, but you loose the bloom that a well designed transformer supply can offer. At first it sounds great but after a while you realize the music is lifeless
and boring. Battery on my CD transport does exactly the opposite. I purchased a Paul Hynes LPS (arguably one of the best made) and on my transport the sound quality degraded some on the Dac it was exceptional.
The battery used and build have a lot to do with how good/bad the sound quality is. Remember there is still noise that comes from the chemical reaction need to produce the power. My BPS has a bank of caps on the positive and negative side. Which reduce any noise to an inaudible level. The bigger the battery the better! I use a deep cycle Optimal Yellow Top car battery. In the On position I get pure power from the battery to the bank BG caps. In the Off position the charger kicks in and there is a 12v wall wort that keeps the transport warm and ready to use. YMMV
and boring. Battery on my CD transport does exactly the opposite. I purchased a Paul Hynes LPS (arguably one of the best made) and on my transport the sound quality degraded some on the Dac it was exceptional.
The battery used and build have a lot to do with how good/bad the sound quality is. Remember there is still noise that comes from the chemical reaction need to produce the power. My BPS has a bank of caps on the positive and negative side. Which reduce any noise to an inaudible level. The bigger the battery the better! I use a deep cycle Optimal Yellow Top car battery. In the On position I get pure power from the battery to the bank BG caps. In the Off position the charger kicks in and there is a 12v wall wort that keeps the transport warm and ready to use. YMMV