Amplify+ Adjustable Gain Preamplifier for Professionals

Television Antenna Booster CM 7778HD

List Price: $99.00
Price: $99.00

Description Technical Specifications FAQ's & Support Docs

Amplify+ is intended for outdoor professional use, including multi-dwelling units and commercial applications. The product provides separate UHF and VHF inputs for two-antenna, band-specific installations, as well as a switchable FM trap.

Amplify+ is an outdoor preamplifier designed for mast-mounting with the TV antenna(s). Professional installers may choose options for High gain, Low gain, FM signal blocking and band-specific dual antenna use if required.

Unlike the consumer-ready Amplify product, Amplify+ does not include a USB powering option for indoor use.

Outdoor Heavy-Duty Housing

Amplify+ is constructed of a die-cast metal housing with weatherproof ports to support outdoor installations in extreme weather conditions.

Adjustable Amplification

Amplify+ provides adjustable settings that allow the installer to select the appropriate gain required for a specific installation scenario, eliminating the potential issues encountered from either too much or too little gain. The internal switch can be placed at either a High or Low setting.

Adjustable FM Trap

Amplify+ provides a trap mechanism to block unwanted FM Radio signals from FM-enabled commercial TV antennas, which can cause interference with UHF and VHF television signals. Pass-through of FM signals can be enabled or disabled via an internal switch.

LTE Filtering

Like the consumer-ready Amplify product, Amplify+ provides LTE signal filtering. The proliferation of LTE signal towers and connected LTE devices are a growing cause of intermittent disruption of over-the-air broadcast television signals. These disruptions can result in weak signals, pixelation or even channel loss, and can be especially disruptive when an amplifier is used with a TV antenna.

What’s Included

AMPLIFY+ TV Antenna Amplifier
Power Inserter
Power Adapter
Mounting U-Bolt
(2) Mounting Screws
Installation Guide
1-Year Limited Warranty


Improves Signal Quality
Dual Antenna Inputs (VHF & UHF)
Switchable FM Trap
Decreases Pixilation
May Increase Number of Channels
Ultra Low Noise
Adjustable Gain
Blocks LTE Interference from 3G/4G Smartphones and Transmitters
EMI & FM Out of Band Filtering
Heavy Duty Rating for Outdoor Use
Mast Mounted for Close Proximity to Antenna
Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 21 Write a review.

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  0 of 0 people found the following review helpful:
5 of 5 Great Product and Customer Service January 22, 2021
Reviewer: Ken from Florida - Rural Panhandle  
I initally had an issue with making the purchase. Channel Master customer service picked up on this and contacted me. Problem on my end - resolved. Asked questions and received more detail regarding application. Merchandise arrived in two days. Excellent for this time of year. Amplifier installed and operational in a couple of hours. Cleared up pixels on weak stations and brought in a few more. Overall, money well spent and customer service excellent. Plan is to "tweak" the antenna slightly (40' tower mounted) as time and weather permit for even better results.

  0 of 0 people found the following review helpful:
3 of 5 Pro PreAmp January 22, 2021
Reviewer: Roger from Maine  
It works. I wonder if it is generating 2nd and 3rd order products. Using a basic spectrum analyzer on the antenna before and after amplification shows a lot of products but my cheap analyzer may be generating some or all. I don't like the cover screws. The star washers break in half and fall off after a few removals. Should use hex head bolts instead of small Philip head screws. Pain to see the raised text on the plastic cover.

  0 of 0 people found the following review helpful:
5 of 5 shocked January 22, 2021
Reviewer: television from Illinois  
I know a little about television and how it works. The new Channel Master replaced an older other brand. The television signal is now just a bunch of ones and zeros so theoretically its either great or unwatchable. I was shocked that I now have a sharper picture. Guess I shouldn't look a gift horse in the mouth.

  0 of 0 people found the following review helpful:
5 of 5 CM-7778HD Amp. January 14, 2021
Reviewer: Guy Yates from Woodville, Texas  
This amplifier is the best one that I have used.  And I have used many over the years.  I live about 60 or 70 miles from the TV towers in my area and it brings in the channels.  I have it set on high amp.

  0 of 0 people found the following review helpful:
5 of 5 Excellent device! Well made! November 16, 2020
Reviewer: Jason with Radian Corporation from Nashville, Tennessee  
We're a systems integrator that works mainly with broadcast stations. I use these unit for install at commercial receive sites as well as having one at my personal residence.  They are worth the money.

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