It's very common for devices such as yours to have a noisy inverter. They're really not made for audio.
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.
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To follow on the already correct advice from @cleeds , it's a lot cheaper to provide a square wave output UPS than a sine wave. Unless it specifically says "sine wave output" it probably is not. The square waves produce a lot of higher frequency harmonics (relative to 60 Hz) that make it through the power supplies. Also make sure you don't have your system grounded through some other means, like using 1 device which is not battery powered but some that are. It could do weird things in terms of the ground voltage. This includes coaxial and USB connections. |
Quality batteries with the correct match up can deliver clean power. In case your case, your system is putting too much demand on your small battery. No chance of delivering consistent clean power at any point. I have hooked up my Yeti Goal Zero 1500 with my Accuuphase and streamer with good results. Being a class a/b amp its putting very little demand on inverter. Drawing about 100 watts. With your system being demanding for power, even the Yeti 1500 will not get you there. Also, not all batteries inverters are equal. In my opinion, a battery to meet your clean power needs is cost prohibit. Cost benefit does not pencil out. |
Thanks to everyone for the input. I confirmed that my Anker battery creates a pure sine wave. It also has a maximum output of 1800 W, and my system on average draws about 175 W. @erik_squires thanks for the suggestion, I had not put everything in the system on the battery. Once I did the buzz basically went away. Thanks again! |
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