---
product_id: 5110809
title: "REQ42-B Dual 21-Band Graphic Equalizer, 19\" Rack Mount, RCA In/Out, 3.5mm MP3 Input, LED Indicators, VU Meters, for Studio and Live Sound"
brand: "rockville"
price: "S/.681"
currency: PEN
in_stock: true
reviews_count: 11
category: "Rockville"
url: https://www.desertcart.pe/products/5110809-req42-b-dual-21-band-graphic-equalizer-19-rack-mount
store_origin: PE
region: Peru
---

# RCA + 3.5mm MP3 input versatility Blue LED sliders for exact control Dual 21-band EQ precision REQ42-B Dual 21-Band Graphic Equalizer, 19" Rack Mount, RCA In/Out, 3.5mm MP3 Input, LED Indicators, VU Meters, for Studio and Live Sound

**Brand:** rockville
**Price:** S/.681
**Availability:** ✅ In Stock

## Summary

> 🎛️ Elevate your audio game — because your sound deserves the spotlight!

## Quick Answers

- **What is this?** REQ42-B Dual 21-Band Graphic Equalizer, 19" Rack Mount, RCA In/Out, 3.5mm MP3 Input, LED Indicators, VU Meters, for Studio and Live Sound by rockville
- **How much does it cost?** S/.681 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/5110809-req42-b-dual-21-band-graphic-equalizer-19-rack-mount)

## Best For

- rockville enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Versatility:** RCA stereo inputs/outputs plus front-panel 3.5mm MP3/iPod jack ensure effortless connectivity with all your audio gear.
- • **Built to Perform Anywhere:** Lightweight yet rugged black metal chassis operates on 110V, perfect for mobile DJs, live events, or dedicated studio use.
- • **Master Your Sound Spectrum:** Dual 21-band graphic equalizers deliver ultra-fine frequency control from 20Hz to 20kHz for pristine audio tailoring.
- • **Visualize Every Adjustment:** Blue LED sliders paired with multi-color LED displays and dual VU meters provide real-time, intuitive audio level feedback.
- • **Seamless Studio & Stage Integration:** Standard 19" rack-mount design with removable brackets fits effortlessly into professional setups or home studios.

## Overview

The Rockville REQ42-B is a professional-grade dual 21-band graphic equalizer designed for precise audio customization across a full 20Hz-20kHz range. Featuring a 19" rack-mountable chassis with removable brackets, it integrates seamlessly into studio and live sound setups. Equipped with RCA stereo inputs/outputs and a front-panel 3.5mm MP3/iPod input, it offers versatile connectivity. Blue LED sliders, multi-color LED displays, and dual VU meters provide clear visual feedback for accurate sound adjustments. Lightweight and durable, this equalizer is ideal for DJs, sound engineers, and audio enthusiasts seeking reliable, high-fidelity sound control.

## Description

The Rockville REQ42-B is a professional dual 21-band graphic equalizer designed for precise audio control in live and studio environments. With a 19" rack-mountable form factor and removable brackets, it integrates easily into any standard setup. The unit offers RCA stereo input with front panel selector switch, a dedicated RCA record output, and a 3.5mm MP3/iPod input jack on the front panel for added convenience.Each of the 42 total frequency bands is paired with a blue LED slider, allowing for accurate adjustments across a 20Hz-20kHz frequency range. A multi-color LED display, individual LED indicators, and dual VU meters provide real-time visual feedback of audio levels. Weighing just 6 lbs, the REQ42-B delivers professional features in a durable and compact chassis that operates on 110V AC power.Perfect for DJs, sound engineers, or audio enthusiasts, this equalizer is a dependable solution for optimizing sound in live sound reinforcement, studio mixing, or home audio systems.

Review: It Works. - Of course, this is not the best of the home equalizer I have owned. This is the cheapest of them as I paid a lot more for the other ones. Simply, it does its job and I like it. Too many bands to adjust compare to my old ones (I still have one of them in use), therefore it is just a matter of practice to get used to that many controls to adjust. The spectrum analyzer is just an indicator of the input level not by frequencies but the overall sound, that is why it moves all the bars the same way always but it really responds to the overall sound input level. Another thing, most of the superior equalizers for sale, are more suitable for PA systems not necessarily for your home system but this one is. Even some people criticized the instruction manual, I don't need any kind of instructions to set up an equalizer to my home system, it is so basic. Recommended product for those who don't want to spend a lot of money and have some kind of experience in setting home stereo equipment instinctively, no instructions.
Review: Excellent Equalizer. Definitely worth the money. - Fantastic unit. I wish it came with a true user's manual instead of just a link to YouTube videos, but I love this unit.

## Features

- DUAL 21-BAND EQ: Fine-tune audio with 2 x 21-band graphic equalizers covering a wide 20Hz-20kHz frequency range.
- RCA CONNECTIVITY: Features RCA stereo input and record output with front panel selector switch and 3.5mm MP3/iPod input jack.
- RACK-MOUNT READY: Standard 19" rack-mountable design with removable brackets for easy integration into professional audio setups.
- LED VISUAL MONITORING: Blue LED sliders, multi-color LED display, and dual VU meters provide precise level monitoring.
- ROBUST BUILD: Durable black metal chassis weighs only 6 lbs and operates on 110V, suitable for home studios, events, or mobile DJs.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00LZDSL7U |
| Best Sellers Rank | #22,993 in Electronics ( See Top 100 in Electronics ) #1 in Audio Component Equalizers |
| Color Name | Black |
| Connector Type | RCA |
| Customer Reviews | 3.9 3.9 out of 5 stars (1,058) |
| Date First Available | July 21, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 6.5 pounds |
| Item model number | REQ42-B |
| Product Dimensions | 19 x 12 x 6 inches |
| Standing screen display size | 19 Inches |

## Images

![REQ42-B Dual 21-Band Graphic Equalizer, 19" Rack Mount, RCA In/Out, 3.5mm MP3 Input, LED Indicators, VU Meters, for Studio and Live Sound - Image 1](https://m.media-amazon.com/images/I/61fgt7IT+QL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: I cant get the slide controls to change any kind of frequency. Can you help?**
A: There is a button that says EQ , if you do not engage the EQ your in bypass mode and there will be no Equalization . So press that button , but turn the volume to a lower level , because when the the EQ is engaged the volume will  bump up .  And also make sure your connections are  correct, stereo out to EQ in . If your not sure if your hook up is correct refer to you Stereo owners manual.

**Q: I realize that this unit does not have a spectrum analyzer, but where are the dual vu meters that are listed three times in the description?**
A: It has no VU meters.

**Q: How does the  spectrum analyzer work**
A: It's fake- it doesn't represent anything other than the overall level with a completely made-up representation of frequencies.

**Q: i have a sherwood receiver and yamaha speakers for outside deck,would this eq work for this?**
A: Depends upon the inputs and outputs for your receiver. Also depends upon whether your receiver supports an equalizer loop. Also depends upon whether you pipe other sources into your receiver or not. Don't take this equalizer outdoors, of course.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It Works.
*by M***. on November 9, 2025*

Of course, this is not the best of the home equalizer I have owned. This is the cheapest of them as I paid a lot more for the other ones. Simply, it does its job and I like it. Too many bands to adjust compare to my old ones (I still have one of them in use), therefore it is just a matter of practice to get used to that many controls to adjust. The spectrum analyzer is just an indicator of the input level not by frequencies but the overall sound, that is why it moves all the bars the same way always but it really responds to the overall sound input level. Another thing, most of the superior equalizers for sale, are more suitable for PA systems not necessarily for your home system but this one is. Even some people criticized the instruction manual, I don't need any kind of instructions to set up an equalizer to my home system, it is so basic. Recommended product for those who don't want to spend a lot of money and have some kind of experience in setting home stereo equipment instinctively, no instructions.

### ⭐⭐⭐⭐⭐ Excellent Equalizer. Definitely worth the money.
*by J***N on February 19, 2026*

Fantastic unit. I wish it came with a true user's manual instead of just a link to YouTube videos, but I love this unit.

### ⭐ Sounded great for less than a year, Poor construction
*by J***C on July 18, 2023*

July 2023 // This EQ sounds great in my system. The only thing I see that I don't care for is the operation of the cheesy Level meter. It looks like a Spectrum Analyzer but only bounces up and down based on the input level and band settings. I would prefer a regular VU meter...LED or analog... the way this meter works cheapens the look of the unit to those of us that can grasp what it is actually doing. Despite what I see as a single flaw, It is a great little unit for the price. // Now November 26, 2023... After only 4 months the first of the level markers on the sliders has failed. I guess poor construction practices are a sign of the time.... Now 10 months later...on my second unit an on this one, way worse, all the spider lights are on and off all the time. Still sounds great, but lets be real....need to look like quality as well. Nov 30,2024- the left channel went static and failed. Not going to try a forth unit. Think I'll just trash this POS and look for one that offers at least for quality. DON'T BUY THIS!!!!!!!!!

## Frequently Bought Together

- Rockville REQ42-B Black 19" Rack Mount 2 x 21 Band Equalizer
- Tan QY 2RCA to 2RCA Cable 3Ft, Gold-Plated 2 RCA Male to 2 RCA Male Stereo Audio Cable for Home Theater, HDTV, Gaming Consoles, Hi-Fi Systems (3Ft/1M)
- Monoprice 1.5ft Premium 2 RCA Plug/2 RCA Plug M/M 22AWG Cable - Black

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-03-18*