Do you find battery supplies inferior to well designed power supplies?

No problems with my Chord Hugo.  It sounds best on batteries only.  There are colors from blue to green to amber and then to red to indicate battery level.  I don't notice any change until the level goes to amber which diminishes dynamics.  I usually get around 7 hours before a recharge.

My Jeff Rowland Criterion Preamp sounds absolutely INCREDIBLE on battery power.  

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

Battery supplies are no different from mains supplies when it comes to being able to provide sufficient "power" to handle the most demanding transient spikes.

Where battery supplies tend to fail is in theri ability to deliver enough current.

If they are unable to provide enough current to handle those spikes then the voltage will drop and your SQ will suffer.

If you are contemplating a battery power supply it is always prudent to  use a bigger "battery" than you anticipate you will need.

Connecting batteries in parallel will ensure they can deliver the required current.

Regards...

Even with low power devices like dacs and preamps, batteries are lacking dynamics. But the capacitor concept of vinnierossi lio sounds interesting 

paul79

Do you find battery supplies inferior to well designed power supplies?

I have to ask, because every single battery powered unit or battery supply I have ever tried sounded great for the first few tracks, then focus gets blurry and things sound lost.

Batteries that have a amperage capabilities should always be better than any made up mains powered supply.

There is only one reason I can think that yours did what you said, is if their were no voltage regulators after the batteries and the after a few hours the voltage dropped and as a result so did the circuit ideal operating parameters.

Cheers George