---
product_id: 64728762
title: "Cube 20R Guitar/Keyboard Amplifier"
brand: "kustom sound"
price: "S$141"
currency: SGD
in_stock: false
reviews_count: 8
url: https://www.desertcart.sg/products/64728762-cube-20r-guitar-keyboard-amplifier
store_origin: SG
region: Singapore
---

# 20W RMS Power 3-Band Global EQ 4 Input Channels Cube 20R Guitar/Keyboard Amplifier

**Brand:** kustom sound
**Price:** S$141
**Availability:** ❌ Out of Stock

## Summary

> 🎸 Small Amp, Big Stage Vibes – Own Your Sound Everywhere!

## Quick Answers

- **What is this?** Cube 20R Guitar/Keyboard Amplifier by kustom sound
- **How much does it cost?** S$141 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/64728762-cube-20r-guitar-keyboard-amplifier)

## Best For

- kustom sound enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Inputs:** Seamlessly switch between guitar, keyboard, mic, and CD for all your creative needs.
- • **Compact Powerhouse:** 20 watts RMS deliver crystal-clear sound that punches well above its size.
- • **Silent Practice Ready:** Headphone output ensures you can jam anytime without disturbing the vibe.
- • **Pro-Level Tone Control:** Global bass, mid, and treble EQ lets you sculpt your perfect sound effortlessly.
- • **Immersive Reverb Effect:** Spring reverb knob adds lush depth and atmosphere to your practice sessions.

## Overview

The Cube 20R is a compact 20-watt amplifier featuring an 8-inch custom speaker, four versatile input channels (keyboard, guitar, mic, CD), and a global 3-band EQ with spring reverb. Designed for musicians seeking crisp, translucent sound in a rugged, portable package, it also includes a headphone output for silent practice, making it ideal for both home and studio use.

## Description

The Cube 20R offers 20 watts RMS of max power with an astonishing Spring Reverb knob. Packed with all the big amp features in a small package. In spite of its size, the Cube 20 outputs 20 watts RMS of crisp and translucent sound so important for a musician who uses a high-end processor. This translucent performance is also what the keyboardist needs to reproduce correctly all his PCM samples. Along with its global three band Equalizers and a reverb knob make Kustom Cube 20 a perfect practice amp. A rugged cabinet design and an 8" custom designed speaker give an extended bass response and tone. Combine this with an 8" speaker, headphone output for silent practice and you have a small package with some serious sound levels. Please use a spike guard while using the device, one needs to make sure that the cable is not unplugged from the amplifier without lowering the power. As these power surges may damage the system.

## Features

- Power (R.M.S): 20 Watts
- Speaker (inch): 8
- Input Channels 4: Keyboard, Guitar, Mic, CD
- Effects DSP Reverb Output Line Out, Pre Out, Headphones
- Tone Control Global : Bass, Mid , Treble

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Package Dimensions | 31.8 x 30 x 20 cm; 5.32 kg |
| Item model number | 20R |
| Colour | Black |
| Compatible Devices | Double Bass |
| Connector | 3.5mm Jack, 6.35mm Jack |
| Material | Metal, Wood |
| Power Source | Corded Electric |
| Item Weight | 5 kg 320 g |
| Manufacturer | Kustom Sound |

## Product Details

- **Brand:** Kustom Sound
- **Colour:** Black
- **Compatible Devices:** Double Bass
- **Material:** Metal, Wood
- **Item Weight:** 11.73 Pounds

## Images

![Cube 20R Guitar/Keyboard Amplifier - Image 1](https://m.media-amazon.com/images/I/51WPnLqoRZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    A great practice amp
  

*by K***S on Reviewed in India on 18 December 2015*

I received the Cube 20R yesterday. I plugged it in expecting the hum . hiss and other crackling noise usually associated with low price low end amps. This one was incredibly silent. I pumped up all the controls one-by-one to the max and turned all the pots clockwise and counter-clockwise once and once again listening for static. There was none. I then plugged in my guitar and fired it up. There was a little noise which is normal with any electronics pushed to the limit.The response of the amp ? Incredibly clear and crisp.This baby rocks.A great practice amp.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    No AC adaptor
  

*by A***N on Reviewed in India on 17 July 2019*

Overall the product is amazingBut I would have liked if there was available adaptor along with it

### ⭐ 1.0 out of 5 stars







  
  
    Bad product
  

*by A***R on Reviewed in India on 12 August 2018*

Within 4 months of this purchase, amplifier is making wierd sounds and not at all working.

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**Shop now:** [https://www.desertcart.sg/products/64728762-cube-20r-guitar-keyboard-amplifier](https://www.desertcart.sg/products/64728762-cube-20r-guitar-keyboard-amplifier)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-08*