---
product_id: 84125736
title: "Amplify+ Adjustable Gain Preamplifier for Professionals"
brand: "channel master"
price: "AR$18141"
currency: ARS
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.ar/products/84125736-amplify-adjustable-gain-preamplifier-for-professionals
store_origin: AR
region: Argentina
---

# 16-26dB Gain UHF/VHF Inputs Weatherproof Housing Amplify+ Adjustable Gain Preamplifier for Professionals

**Brand:** channel master
**Price:** AR$18141
**Availability:** ✅ In Stock

## Summary

> 📺 Elevate Your Viewing Experience with Precision Amplification!

## Quick Answers

- **What is this?** Amplify+ Adjustable Gain Preamplifier for Professionals by channel master
- **How much does it cost?** AR$18141 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/84125736-amplify-adjustable-gain-preamplifier-for-professionals)

## Best For

- channel master enthusiasts

## Why This Product

- Trusted channel master brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Weather Warrior:** Heavy-duty housing designed to withstand the elements.
- • **FM Signal Control:** Switchable FM trap for crystal-clear TV signals.
- • **Interference Be Gone:** LTE filtering for uninterrupted viewing pleasure.
- • **Smart Installation Ready:** Requires a power passing splitter for seamless setup.
- • **Tailored Signal Boosting:** Adjustable gain settings for optimal reception.

## Overview

The Channel Master CM-7778HD Amplify+ is a professional-grade outdoor TV antenna amplifier that enhances signal reception with adjustable gain settings, separate UHF and VHF inputs, and robust weatherproof construction. It features LTE filtering to reduce interference and a switchable FM trap for optimal performance.

## Description

Full description not available

## Product Details

- **Item dimensions L x W x H:** 5.38 x 3.5 x 3 inches
- **Voltage:** 13.2 Volts
- **Manufacturer:** Channel Master
- **Maximum Supply Voltage:** 15 Volts (DC)
- **Minimum Supply Voltage:** 12 Volts (DC)

## Images

![Amplify+ Adjustable Gain Preamplifier for Professionals - Image 1](https://m.media-amazon.com/images/I/81O6e0Ub49L.jpg)
![Amplify+ Adjustable Gain Preamplifier for Professionals - Image 2](https://m.media-amazon.com/images/I/91n+KhK3IUL.jpg)
![Amplify+ Adjustable Gain Preamplifier for Professionals - Image 3](https://m.media-amazon.com/images/I/81YkUdbZT9L.jpg)
![Amplify+ Adjustable Gain Preamplifier for Professionals - Image 4](https://m.media-amazon.com/images/I/81Xj+5oUSYL.jpg)
![Amplify+ Adjustable Gain Preamplifier for Professionals - Image 5](https://m.media-amazon.com/images/I/91hEE-KBIPL.jpg)

## Questions & Answers

**Q: How does it work for FM?**
A: Digital TV channels are in the UHF spectrum.  Most new TV antennas are designed for UHF, and would be poor VHF-FM antennas, but would work better than not having one at all in some locations.  Thus, it would not be correct to assert that it works well as that would be misleading.

**Q: What is the difference between the older cm-7778 and cm-7778hd?**
A: 1- Adjustable gain, 2- FM band trap, 3- Separate UHF and VHF antenna inputs if you use 2 different ones. There is probably more than that. Hope this helps.

**Q: With my old preamp I was receiving 42 stations. I replaced it with a cheap model and it is only picking up 20 some stations. Could this preamp pull me**
A: Our TV transmitters are 42 or more miles away and a hill that covers the horizon. We get over 30 chanels.

**Q: Does the cm-7778hd come with a power cord or is that something you have to get separate?**
A: It comes with the power cord AND the power converter (something I didn't know so purchased one at extra cost.
The only thing not included here is the coax cables to attach to antenna and power source.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Durable, even in extreme environments
*by A***R on May 15, 2025*

Can't go wrong with a Channel Master product. Yes, they cost more, but they last longer, especially in extreme conditions such as an attic.

### ⭐⭐⭐⭐ The HONEST review Channel Master CM-7778HD
*by B***S on July 19, 2024*

Though this is a good amp it is only recommended if you have ONE outdoor antenna. It has the option to connect a VHF and UHF separately but it had a real hard time getting good signal on each of the seperate ports. It worked better just combining the antenna itself and connecting it to just the one UHF/VHF port. It is nice that it has a low and high gain giving you two types of gain to test. Biggest problem with these amps is it blows up all signal in whole. This means channels that don’t need this amp will get distorted because now the signal is too high. It worked decently with the Channel Master Omnidirectional antenna but it did not solve the issues of fixing low signals while keeping good higher signals. For my location I ended up returning and getting a Televes amp which balances all signals. The difference was exceptional compared to this Channel Master.For me I am located in New England near New Haven and NYC.

### ⭐⭐⭐⭐⭐ Excellent Purchase
*by J***K on May 14, 2023*

This was just what I needed. I had tried a couple of different, lower priced boosters without much success. With the two others I purchased recently the channels would come in sometimes but not every time. But with this Channel Master CM-7778HD I was shocked how good it was. In my area there are a total of four major channels of networks (ABC, NBC, CBS, Fox) including their sub-channels and some independent stations, I have 37 channels to watch now. The NBC affiliate is 70 miles from me. All come in clear. I live in an upstairs apartment, and I use a ClearStream antenna. Although occasionally the weather will cause issues (storms) the rest of the time the channels are clear. I recommend you purchase this product and don't mess with the cheaper versions.

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**Shop now:** [https://www.desertcart.com.ar/products/84125736-amplify-adjustable-gain-preamplifier-for-professionals](https://www.desertcart.com.ar/products/84125736-amplify-adjustable-gain-preamplifier-for-professionals)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-22*