💡 Furman AC-215A Black Compact Power Conditioner with Auto-Resetting Voltage Protection Review

I bought this with the idea that it would block electrical noise from the noisy water heater we have in the house. It's not like this. It cuts out most of the noise, but my Little Dot tube amp still has a faint hum that's noticeable in the quieter parts of the songs. Since the noise is proportional to the volume at the amp, the workaround is to keep the volume high on my DAC while keeping the amp volume low. I think that's acceptable as before the noise was so terrible it was impossible to hear

I did it quite religiously without even questioning it. Recently, after a little research, I was convinced that 99.9% of the time ACs are more or less redundant or unnecessary and that a good quality AC filter is more than enough. 215A on a fairly typical home office desktop (two 27" displays, PC with a 650W power supply, pair of 35W powered speakers, standing desk running) with just a Tripp-Lite ISOBAR8 Ultra, plugged directly into an outlet, ISOBAR made a fairly noticeable (and annoying)…

I needed something better than a high performance power supply for my home recording studio (PC, synth, keyboard, mixer, powered speakers, auxiliary equipment) that could help with power management (filtering, buffering, protection, etc.) . My AC power is already pretty good but would like to add some general protection. I was already familiar with the high quality of Furman and its reputation is exceptional judging by the various 'best' reviews around the web. So I chose this device because of

I use a Furman AC-215A to filter mains voltage for some electronic diagnostic equipment including an oscilloscope, function generator and benchtop PTO and frequency counter. Ironically, these tools can also be used to test how well the AC-215A is performing and I see no problem with what it's missing. A nice feature is that if there is a prolonged overvoltage of more than 135 volts, it will shut off. Surge protection alone does not help in such a situation. The AC-215A is probably the cheapest…