Battery-Powered Audio System Buzzing?


I’ve seen many people proclaim the merits of powering one’s audio system with a battery, rather than from the wall AC power. I purchased an Anker SOLIX BP1000 battery as a household backup in case of power outages. I figured why not give it a shot on the audio system.

Well, it powers the system just fine, however, there is a buzzing that comes through the speakers when using the battery as the power source. When plugged directly into the wall (or rather through a Zero Surge unit), there is no buzz. It is silent as can be. 

Does anyone have any ideas as to why the buzz might be happening when powered by the battery? Any insights would be much appreciated! For reference, I am running a Macbook -> Schiit Yggdrasil OG ->Don Sachs preamp -> Schiit Tyr monoblocks -> Tekton Encore towers.

 

sid-hoff-frenchman

Showing 1 response by bruce19

If you are going to use a battery in hopes of hearing the effect of quieter power, it makes sense to try to use the batteries power directly without interposing an inverter. What I mean is that a battery supplies direct current. The interior circuits of all hi-fi equipment Use direct current. Why bother changing to alternate current only to have to convert it back to direct current? The easiest way to do this is to use hi-fi components that employ an external DC power source (the infamous wall wart) generally, these will be less expensive but nonetheless high-quality sources, Dacs , and amps such as a raspberry pi based streamers, topping dacs, and Fosi amplifier just as one set of examples. You will need to find separate lithium ion batteries for each component that match. It’s voltage and amperage requirements, but this is not too hard to do and considerably less expensive than the large battery solutions already discussed. I have done this and have been very pleased with the results.