Ok, there's one in every crowd...so this time, it's me....I don't think a DC to AC converter in this price range is any good. Problem that can't be defined is how well this particular model does in actually creating a true sine wave. Most low end DC to AC converters generate square waves. This will result in dynamic's suffering.
Then there is the issue of reserve power....if you have a 130X5WPC amp, odds are it will draw 900 - 1300 VA's depending on the architecture of the amp. This particular model only puts out 1200 VA's. General rule of thumb is the unit should be 3X the rating of you highest device.
In this price point, if you want a voltage regulator...get one that uses an autoformer or has a transformer with variable windings. This approach basically acts like a step up or step down transformer depending on the incoming voltage, rather than the DC to AC conversion approach. The autoformer or transformer based methods are true sine waves. Furman has some in the 500 price range based on autoformers.
Stay way from models that use a large capacitor to change the frequency of incoming electrciity thereby changing the voltage level. As the frequncy changes, the voltage does change, but this causes issues with componets that expect 60hz. Tripplite one in the 300 dollar range for voltagr regulators are transformers that use capacitors with additional windings.
In most cases, all voltage regulators are lousy line conditioners. So if you want line conditioning and surge protection, you could do that better by staying away from regulators all together.
I'm using a 2000 VA voltage regulator, with a high end line conditioner in front of it. I don't use battery backup systems since they are all DC to AC converters, you would need a pretty expensive one to generate a true sine wave, and even more expensive one to generate a true sine wave at the 2000 VA power levels.
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