---
product_id: 595273722
title: "Digital Octave Guitar Effect Pedal Harmonic Square 7 modes"
brand: "donner"
price: "R$1082"
currency: BRL
in_stock: true
url: https://www.desertcart.com.br/products/595273722-digital-octave-guitar-effect-pedal-harmonic-square-7-modes
store_origin: BR
region: Brazil
---

# Aluminum-alloy build, durable & lightweight True bypass for crystal-clear tone 7 shift types + 3 tone modes = 21 sound combos Digital Octave Guitar Effect Pedal Harmonic Square 7 modes

**Brand:** donner
**Price:** R$1082
**Availability:** ✅ In Stock

## Summary

> 🎸 Elevate your riffs with 21 shades of octave magic!

## Quick Answers

- **What is this?** Digital Octave Guitar Effect Pedal Harmonic Square 7 modes by donner
- **How much does it cost?** R$1082 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/595273722-digital-octave-guitar-effect-pedal-harmonic-square-7-modes)

## Best For

- donner enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Rugged aluminum-alloy chassis ensures rock-solid durability without weighing down your pedalboard.
- • **Performance-Ready:** LED indicator for instant status check and optimized for 9V DC power supply (adapter not included).
- • **Precision Tone Control:** Fine-tune your mix with dedicated WET and DRY knobs for perfect harmonic balance on stage or in studio.
- • **Transparent True Bypass:** Keep your original tone pure and uncolored with advanced digital circuitry and true bypass design.
- • **Versatile Sonic Palette:** Unlock 21 unique pitch and octave effects with 7 shift types and 3 tone modes—your sound, your rules.

## Overview

The Donner Digital Octave Guitar Effect Pedal Harmonic Square offers 7 shift types combined with 3 tone modes, delivering 21 distinct pitch-shifting options including semitonal, octave, and detune effects. Crafted from durable aluminum alloy, it features WET and DRY knobs for precise signal blending, true bypass circuitry for transparent tone, and an LED indicator for easy operation. Compact and lightweight, this pedal is designed for professional musicians seeking versatile, high-quality octave effects.

## Description

Donner Digital Octave Guitar Effect Pedal Harmonic Square 7 modes

## Features

- [Octave/Pitch shifter Pedal] With 7 shift types and 3 tone mode toggles, Harmonic Square guitar pedal gives you 21 options of semitonal, octave and detune sounds
- [3 Tone Modes]: 3 tone modes including Sharp, Flat, and Detune; Sharp: Pitch up; Detune: Adjustable pitch signal shifted by 10 cents; Flat: Pitch down
- [WET and DRY Knobs]: WET Knob: Adjust the harmonic signal level; DRY Knob: Adjust the dry signal level
- [Buit to Last]: Whole Aluminium-alloy classic, stable and strong; LED indicator shows the working state
- [True Bypass ]: Digital circuit design, true bypass provides a transparent tone. Please power the pedal with a 9V DC adapter (NOT Included), center negative polarity, and a minimum of 500mA current for optimal performance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 6 x 6.2 x 10 cm; 250 g |
| Item model number | EC966 |
| Body Material | Aluminum |
| Colour | octave |
| Connector | 1/4 inch audio |
| Hardware Interface | 1/4-inch Audio |
| Signal Format | Analog |
| Material | Aluminium alloy |
| Power Source | Corded Electric |
| Voltage | 9 Volts |
| Item Weight | 250 g |
| Manufacturer | Donner |
| Country of Origin | China |

## Product Details

- **Brand:** Donner
- **Style:** Pedal
- **Colour:** octave
- **Product Dimensions:** 5.7L x 6.5W x 12.9H Centimeters
- **Item Weight:** 0.25 Kilograms

## Images

![Digital Octave Guitar Effect Pedal Harmonic Square 7 modes - Image 1](https://m.media-amazon.com/images/I/71VJr1J6+wL.jpg)

## Frequently Bought Together

- Donner Octave Guitar Pedal, Harmonic Square Digital Octave Mini Pedal Pitch Shifter 7 Shift Types 3 Tone Modes Sharp Detune Flat True Bypass
- Donner DPA-1 Guitar Pedal Power Supply Adapter 9V DC 1A Tip Negative 5 Way Daisy Chain Cables for Guitar Effect Pedal
- Donner 6 Inch Guitar Patch Cable Guitar Effect Pedal Cables Black 6 Pack

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**Shop now:** [https://www.desertcart.com.br/products/595273722-digital-octave-guitar-effect-pedal-harmonic-square-7-modes](https://www.desertcart.com.br/products/595273722-digital-octave-guitar-effect-pedal-harmonic-square-7-modes)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-28*