Has been in almost daily use since arriving six weeks ago and no problems. I live in an area where most stations are 25 to 60 miles distant and the signal gain is very noticeable w/o any equipment to measure with. Product is well made and suitable for outdoor use. Wouldn't hesitate to buy from Channel Master again. Thanks for a quality product Kevin Wise
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Problem solved.
December 18, 2017
Reviewer:
Ed from Scituate, RI
Old signal enhancer burnt out. Replaced with Ultra Mini. Just attach the coaxial cables, plug it in. Three TVs in our home all work well. We are in a fringe reception area -- with the ultra mini we get 44 channels, all high quality picture and sound. We have a rooftop antenna on a ,long post.
Good advice from customer service, they know their products. Prompt delivery.
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Great amp
December 5, 2017
Reviewer:
Anonymous Person from MA
We had 18 channels with 2 or 3 of them pixelating. Installed the amp and jumped to 38 channels with probably 5 of them coming and going. Still an improvement of around 18 channels. Well worth it.
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Good, but please...
September 5, 2017
Reviewer:
KB from Mississippi
The Ultra Mini 1 was simple to set up and made all the difference for a couple of tv's located away from my main setup. One suggestion though - the markings on the unit are a little confusing (2 marked "pwr in") and some are faint (I had to use a magnifying glass). I didn't have much trouble, but wonder why the markings don't simply clearly say "pwr in / signal in / signal out."
Excellent 
Good, but please...