---
product_id: 647414032
title: "9-Band Stereo EQ Preamp: HiFi Equalizer Audio Processor with Tone Controls | 111dB SNR | 0.001% THD | 2 RCA in/Out | for Home Stereo Audiophiles (EQ9)"
brand: "nobsound"
price: "$190.59"
currency: USD
in_stock: true
reviews_count: 10
category: "Nobsound"
url: https://www.desertcart.ec/products/647414032-9-band-stereo-eq-preamp-hifi-equalizer-audio-processor-tone
store_origin: EC
region: Ecuador
---

# 0.001% ultra-low distortion 111dB ultra-wide dynamic range 9-band precise tuning ±6dB 9-Band Stereo EQ Preamp: HiFi Equalizer Audio Processor with Tone Controls | 111dB SNR | 0.001% THD | 2 RCA in/Out | for Home Stereo Audiophiles (EQ9)

**Brand:** nobsound
**Price:** $190.59
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your home audio game—because your ears deserve the VIP treatment.

## Quick Answers

- **What is this?** 9-Band Stereo EQ Preamp: HiFi Equalizer Audio Processor with Tone Controls | 111dB SNR | 0.001% THD | 2 RCA in/Out | for Home Stereo Audiophiles (EQ9) by nobsound
- **How much does it cost?** $190.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/647414032-9-band-stereo-eq-preamp-hifi-equalizer-audio-processor-tone)

## Best For

- nobsound enthusiasts

## Why This Product

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

## Key Features

- • **Instant Tone Control:** Bypass and balance knobs give you real-time control to center vocals and perfect your mix.
- • **Master Your Soundscape:** 9-band EQ lets you sculpt bass, mids & treble with surgical precision for every vibe.
- • **Seamless Setup & Switching:** Dual RCA inputs/outputs integrate effortlessly with your home stereo arsenal for instant upgrades.
- • **Crystal-Clear Audio Fidelity:** 111dB SNR ensures your music stays pristine, even at high volumes—hear every detail.
- • **Distortion? What Distortion?:** 0.001% THD keeps your sound pure and natural, no harshness, just immersive clarity.

## Overview

The Nobsound EQ9 is a compact, aluminum-alloy 9-band stereo equalizer and preamp designed for audiophiles seeking precise tonal control. Featuring a wide 111dB signal-to-noise ratio and ultra-low 0.001% total harmonic distortion, it delivers clean, distortion-free sound. With dual RCA inputs and outputs, plus tone controls including bypass and balance, it seamlessly integrates into home stereo setups to enhance music, movies, and gaming audio with professional-grade clarity and customization.

## Description

Buy Nobsound 9-Band Stereo EQ Preamp: HiFi Equalizer Audio Processor with Tone Controls | 111dB SNR | 0.001% THD | 2 RCA in/Out | for Home Stereo Audiophiles (EQ9): Equalizers & Feedback Controllers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Good addition to a home stereo setup. - Exactly what I needed. If you're not getting the sound you want from your system, get this EQ. Modern receivers only have bass/treble adjustments. That's essentially the same sound-shaping ability of an AM car radio from the 1960's. The essence of most recordings is in the midrange. Less bass + more treble does not equal midrange. This very inexpensive EQ allows for decent boost of the correct frequencies for accurate sound. I run my turntable into a tube preamp then to this EQ and into my Onkyo receiver. The only thing I've noticed is that at higher volume levels, I need to adjust frequency levels. I highly suspect it's my Klipsch speakers that are responsible. Klipsch, like Cerwin Vega, really like to be pushed to Police- call sound levels to sound good. At lower volume levels, this EQ still shines. It can remove most of the brassiness of poor classical, jazz, or Calypso recordings without muddying the bass and mids. This is a great entry-level EQ. If you're new to equalization and want to tweek your listening experience, get it. It's a good EQ for 60 bucks. Frequency attenuation is very good at all levels. Knobs are smooth with no distortion. Takes up very little room. I can't vouch for its ability to "warm up" digital recordings. It would depend on how it's inserted into the chain.
Review: No hum or audible distortion. Does effect change - Good things come to those who wait. After a long journey from China the equalizer finally made it home. The equalizer does make tangible changes in the sound of the amplifier it is hooked to , which is a Yamaha rs202. Not putting the rs202 down, but " barefooted" , which simply means with no equalizer, the rs202, at least my particular one, lacked in the middle to upper frequencies. I knew bass was adequate as is in my case, so only the last 3 nobs are above flat. I already knew I didn't need lower frequency increase. It is obvious the equalizer is a preamp. It uses that preamp to effect changes in the amplifier input. All nobs do increase or decrease tonal quality, and I wanted them to be capable of doing so. As previously stated, only the upper frequency ,last 3 nobs are above flat. I have found what I call " Cyberspace ", or " virtual equalizers in android phones and mp3 apps " weird out " and are inferior to an actual, material equalizer, and that even on a flagship samsung. I have never experienced a " Cyberspace " or " virtual equalizer that actually allows " normal " equalizer tone , frequency response adjustments unless they " like " the equalizer adjustments. If " Cyberspace " and " virtual equalizers don't " like " where someone sets them they are weird out and are more than basically worthless. They are worthless unless they are set to very limited overall settings that the Cyberspace and virtual equalizers like to be set. This tangible, material equalizer made of matter is not like that. It will do what the user wants without weirding out. In other words it is my experience that a material, tangible equalizer is superior to phone and specifically android equalizers in Cyberspace and virtual equalizers that don't exist in the world of matter. In order to effect change by phone streaming requires " hardwiring " by a usb to rca plugs adapter. It will not eq phone streaming by Bluetooth because it's not in the line inputs and outputs to do so. Usb c to rca male patch cords are inexpensive and abundantly available. They work. Concerning this particular equalizer, not only do I not regret this product and purchase, but I am glad I did it. Shipping speed is slow because the product was not in a warehouse in the United States. It shipped individually from China. I finally got it. It has been welcomed home, and initially is functioning correctly. The rs202 Yamaha is not a high end 2 channel amplifier, so it needed an equalizer/ preamp to help it output a sound with more " presence " and treble. This equalizer has caused it to do that. It was worth the wait of getting it from an origin Shipping source in China instead of the United States. It took longer to get it than usual, but it was worth the wait. As previously stated, there is no hum , or any other sound negatives about it. If it adds distortion, it is less than detectable by my good ears. I have good hearing and I don't hear any distortion at all because of the equalizer. What I hear is better presence and treble, which is what I needed. This product is good, and I recommended It based on my particular experience so far. I just got it today. 5 stars. Update August 26, 2025 Just bought another one and it has markedly improved the sound quality of my other main stereo system. It is a preamp, in addition to an equalizer. It has improved presence and clarity, as well as volume. Very pleased. It does change the sound by preamp as well as eq. Might not be for a " sound purist " who doesn't want to alter the sound in the " signal path" but thats exactly what I wanted and it definitely alters the sound, which is exactly what I wanted it to do.It makes it sound better. Thats the idea. I don't care if it alters the signal path when it makes it sound better. Thats the whole idea here in my place. No distortion or hum . Bravo!

## Features

- 9-Band EQ: Tune nine bands from 20Hz to 16kHz within ±6dB to shape bass, mids, and treble precisely for music, movies, and gaming.
- 111dB SNR: Ultra-clean background and wide dynamic range keep details intact at any volume with excellent headroom for demanding tracks.
- 0.001% THD: Extremely low distortion preserves clarity and realism, delivering tight bass, open mids, and airy highs without harshness.
- 2 RCA In/Out: Connect multiple sources and amps at once for seamless switching and easy integration into existing home setups.
- Tone Controls: Instant bypass for original signal and a balance knob to center vocals and imaging across left/right channels.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D72WRR3D |
| Best Sellers Rank | #5,954 in Musical Instruments ( See Top 100 in Musical Instruments ) #4 in Equalizers & Feedback Controllers |
| Color Name | Black |
| Compatible Devices | Active Speakers, Amplifier, CD Player, Computer, Preamplifier |
| Connector Type | RCA |
| Customer Reviews | 4.2 4.2 out of 5 stars (116) |
| Date First Available | June 14, 2024 |
| Item Weight | 15.8 ounces |
| Item model number | SUC-EQ9 |
| Material Type | Aluminum Alloy |
| Power Source | AC Adapter |
| Product Dimensions | 0.83 x 8.66 x 0.83 inches |
| Size | EQ9 |

## Product Details

- **Brand:** Nobsound
- **Color:** Black
- **Compatible Devices:** Active Speakers, Amplifier, CD Player, Computer, Preamplifier
- **Material:** Aluminum Alloy
- **Product Dimensions:** 0.83"D x 0.83"H

## Images

![9-Band Stereo EQ Preamp: HiFi Equalizer Audio Processor with Tone Controls | 111dB SNR | 0.001% THD | 2 RCA in/Out | for Home Stereo Audiophiles (EQ9) - Image 1](https://m.media-amazon.com/images/I/51ZGOLS1mML.jpg)

## Questions & Answers

**Q: How do I wire the EQ9 in a home system?**
A: Source to EQ9 inputs, EQ9 outputs to amplifier or powered speakers. Use the second RCA pair for another source or amp.

**Q: What does the bypass switch do?**
A: It routes input directly to output, letting you compare original vs equalized sound instantly.

**Q: Can it fix boomy bass or harsh highs?**
A: Yes. Reduce 60–125Hz to tame boom or trim 6–16kHz to soften brightness; use small adjustments for best results.

**Q: Will it add noise to my system?**
A: With 111dB SNR and 0.001% THD, the EQ9 maintains a very low noise floor and clean signal transfer.

**Q: What’s included in the box?**
A: EQ9 unit and a DC 12V power adapter. Use your existing RCA cables to connect components.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good addition to a home stereo setup.
*by P***. on September 3, 2025*

Exactly what I needed. If you're not getting the sound you want from your system, get this EQ. Modern receivers only have bass/treble adjustments. That's essentially the same sound-shaping ability of an AM car radio from the 1960's. The essence of most recordings is in the midrange. Less bass + more treble does not equal midrange. This very inexpensive EQ allows for decent boost of the correct frequencies for accurate sound. I run my turntable into a tube preamp then to this EQ and into my Onkyo receiver. The only thing I've noticed is that at higher volume levels, I need to adjust frequency levels. I highly suspect it's my Klipsch speakers that are responsible. Klipsch, like Cerwin Vega, really like to be pushed to Police- call sound levels to sound good. At lower volume levels, this EQ still shines. It can remove most of the brassiness of poor classical, jazz, or Calypso recordings without muddying the bass and mids. This is a great entry-level EQ. If you're new to equalization and want to tweek your listening experience, get it. It's a good EQ for 60 bucks. Frequency attenuation is very good at all levels. Knobs are smooth with no distortion. Takes up very little room. I can't vouch for its ability to "warm up" digital recordings. It would depend on how it's inserted into the chain.

### ⭐⭐⭐⭐⭐ No hum or audible distortion. Does effect change
*by S***E on November 2, 2024*

Good things come to those who wait. After a long journey from China the equalizer finally made it home. The equalizer does make tangible changes in the sound of the amplifier it is hooked to , which is a Yamaha rs202. Not putting the rs202 down, but " barefooted" , which simply means with no equalizer, the rs202, at least my particular one, lacked in the middle to upper frequencies. I knew bass was adequate as is in my case, so only the last 3 nobs are above flat. I already knew I didn't need lower frequency increase. It is obvious the equalizer is a preamp. It uses that preamp to effect changes in the amplifier input. All nobs do increase or decrease tonal quality, and I wanted them to be capable of doing so. As previously stated, only the upper frequency ,last 3 nobs are above flat. I have found what I call " Cyberspace ", or " virtual equalizers in android phones and mp3 apps " weird out " and are inferior to an actual, material equalizer, and that even on a flagship samsung. I have never experienced a " Cyberspace " or " virtual equalizer that actually allows " normal " equalizer tone , frequency response adjustments unless they " like " the equalizer adjustments. If " Cyberspace " and " virtual equalizers don't " like " where someone sets them they are weird out and are more than basically worthless. They are worthless unless they are set to very limited overall settings that the Cyberspace and virtual equalizers like to be set. This tangible, material equalizer made of matter is not like that. It will do what the user wants without weirding out. In other words it is my experience that a material, tangible equalizer is superior to phone and specifically android equalizers in Cyberspace and virtual equalizers that don't exist in the world of matter. In order to effect change by phone streaming requires " hardwiring " by a usb to rca plugs adapter. It will not eq phone streaming by Bluetooth because it's not in the line inputs and outputs to do so. Usb c to rca male patch cords are inexpensive and abundantly available. They work. Concerning this particular equalizer, not only do I not regret this product and purchase, but I am glad I did it. Shipping speed is slow because the product was not in a warehouse in the United States. It shipped individually from China. I finally got it. It has been welcomed home, and initially is functioning correctly. The rs202 Yamaha is not a high end 2 channel amplifier, so it needed an equalizer/ preamp to help it output a sound with more " presence " and treble. This equalizer has caused it to do that. It was worth the wait of getting it from an origin Shipping source in China instead of the United States. It took longer to get it than usual, but it was worth the wait. As previously stated, there is no hum , or any other sound negatives about it. If it adds distortion, it is less than detectable by my good ears. I have good hearing and I don't hear any distortion at all because of the equalizer. What I hear is better presence and treble, which is what I needed. This product is good, and I recommended It based on my particular experience so far. I just got it today. 5 stars. Update August 26, 2025 Just bought another one and it has markedly improved the sound quality of my other main stereo system. It is a preamp, in addition to an equalizer. It has improved presence and clarity, as well as volume. Very pleased. It does change the sound by preamp as well as eq. Might not be for a " sound purist " who doesn't want to alter the sound in the " signal path" but thats exactly what I wanted and it definitely alters the sound, which is exactly what I wanted it to do.It makes it sound better. Thats the idea. I don't care if it alters the signal path when it makes it sound better. Thats the whole idea here in my place. No distortion or hum . Bravo!

### ⭐⭐⭐⭐ Competent Equalizer
*by A***R on October 28, 2025*

Petty complaint but why when most audio equipment is black or silver is this unit painted grey? Not a big deal but aesthetics are part of audio appreciation. As for the unit itself it is quite different from other equalizers I have had and a current equalizer I continue to use. The controls shape the sound differently but the result is clean and quite pleasant revealing a detail and clarity which is different than the one I have been using. I would agree the unit is more subtle but I like the difference and that subtlety is a refinement. It is well done and a real value in my opinion. You don't have to spend a lot to get quality audio. I would add this to the list as an addition in that direction.

## Frequently Bought Together

- Nobsound HiFi 9-Band Stereo EQ Preamp Analog Equalizer Audio Processor for Home/Car (EQ9)
- 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)
- GearIT RCA Cable (10FT) 2RCA Male to 2RCA Male Stereo Audio Cables Shielded Braided RCA Stereo Cable for Home Theater, HDTV, Amplifiers, Hi-Fi Systems, Car Audio, Speakers, 10 Feet

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-03-07*