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3 comments

    user180

    October 14, 2018

    3 of 3 people found the following review helpful

    5.0 out of 5 stars
    REALLY DOES CLEAN UP NOISE!, May 26, 2018

    By Pete

    Verified Purchase(What’s this?)

    This review is from: Furman AC-215A Compact Power Conditioner with Auto-Resetting Voltage Protection – Black (Electronics)

    I bought this a long time ago and have had my audio stuff hooked up to it. But lately use it for my work. I noticed on my oscilloscope down in the mV range there was a ton of noise making it impossible to see anything useful. There was a lot of switching noise from cheapo power supplies that were plugged into the same outlet as well. I decided to plug my scope & dc power supply into the Furman power conditioner. The majority of the line noise completely disappeared as well as the switching noise!!! I was always hesitant of power conditioners but this proved to me that it does the job. Will most likely purchase another in the future!

    user5770

    October 14, 2018

    16 of 16 people found the following review helpful

    5.0 out of 5 stars
    game changer for single-coil pickup-loving guitarists, June 4, 2017

    By Dave Dederer

    Verified Purchase(What’s this?)

    This review is from: Furman AC-215A Compact Power Conditioner with Auto-Resetting Voltage Protection – Black (Electronics)

    Um…why didn’t someone tell me to get one of these years ago?

    I’m using this to power a guitar amplifier (tube) and some guitar effects.

    As someone who has played single-coil guitar pickups through noisy tube amps for 35+ years, I had accepted 60-cycle hum and other noise as facts of life. I lived with these “facts” daily while practicing at home, in rehearsal, in the studio and on stages all over the world for years and years.

    The power in my house is so dirty that I had given up and installed humbucking pickups in my beloved Fender Stratocasters, losing the twangy essence of their sound but allowing me to practice without losing my mind from the 60-cycle hum and other noise.

    Apparently all I needed to do to change the unpleasant “facts” I’ve been living with for decades was to spend $175 (including tax!) on one of these.

    OMG this is a life-changer. Flabbergasted at the difference. Noise reduction is amazing, voltage regulation is a big bonus. Small enough to put in my gig bag. Never plugging in another amp without one of these again. I feel like a moron for not having figured this out ages ago.

    user9844

    October 14, 2018

    34 of 35 people found the following review helpful

    5.0 out of 5 stars
    Among the Least Expensive of the Non-Thowaways, March 7, 2015

    By Marimons Viator (Tahoe, NV; Tokyo, JP) –

    Verified Purchase(What’s this?)

    This review is from: Furman AC-215A Compact Power Conditioner with Auto-Resetting Voltage Protection – Black (Electronics)

    I’m using the Furman AC-215A to filter line-voltage for some electronics diagnostics equipment, including an oscilloscope, a function generator, and a bench VOM and frequency counter. Ironically, these are instruments that can also be used to see how well the AC-215A works, and I can’t see any issues in what it lets through. A nice feature is that it will shut-down in the event of a protracted over-voltage exceeding 135-Volts. Surge-protection alone won’t help in such a situation.

    The AC-215A is probably the least expensive of the reliable devices available, likely due to its being manufactured in China. But since you’ve made it this far, I’ll throw out three other names: Zero Surge, Brick Wall, and SurgeX. Personally, outside of some industrial suppliers, I don’t know of any other manufacturers that make anything I would use, regardless of price.

    In addition to series suppression, Furman does use MOV’s to allow a controlled discharge of part of a spike or surge across a circuit; however, beware of hype regarding non-MOV approaches. Regardless of the method used, energy from an over-voltage has to be released into something, and there are essentially only two choices in an electrical circuit. What determines a surge-protector’s effectiveness is its ability to reliably absorb energy, and then to release it in a controlled manner without self-destructing. And in that regard, this is a better rated device than some on my own list that cost twice as much.

    Limitations to consider for the AC-215A are that it has only two outlets, and a total maximum current-rating of 10-Amps, so don’t expect it to protect a space-heater. And nothing short of a good homeowner’s insurance policy is going to protect from a direct lightning strike.

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