---
product_id: 543834055
title: "JOYO Bass Compressor Guitar Pedal, Optical Circuit with Attack/Release/Ratio/Tone Control & Bypass (SCYLLA R-27)"
brand: "joyo"
price: "₱10351"
currency: PHP
in_stock: true
category: "Joyo"
url: https://www.desertcart.ph/products/543834055-joyo-bass-compressor-guitar-pedal-optical-circuit-with-attack-release
store_origin: PH
region: Philippines
---

# Optical compressor circuit for studio-grade transparency 6 precision knobs for ultimate tone control Rugged aluminum alloy chassis built for road-ready durability JOYO Bass Compressor Guitar Pedal, Optical Circuit with Attack/Release/Ratio/Tone Control & Bypass (SCYLLA R-27)

**Brand:** joyo
**Price:** ₱10351
**Availability:** ✅ In Stock

## Summary

> 🎸 Sculpt your sound with studio precision and road-ready grit!

## Quick Answers

- **What is this?** JOYO Bass Compressor Guitar Pedal, Optical Circuit with Attack/Release/Ratio/Tone Control & Bypass (SCYLLA R-27) by joyo
- **How much does it cost?** ₱10351 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/543834055-joyo-bass-compressor-guitar-pedal-optical-circuit-with-attack-release)

## Best For

- joyo enthusiasts

## Why This Product

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

## Key Features

- • **Road-Ready Reliability:** True bypass relay switching and a tough aluminum build ensure your tone stays pure and your pedal survives every gig.
- • **Six Knobs, Total Control:** Fine-tune attack, release, ratio, tone, input, and output to sculpt your perfect dynamic response and sonic character.
- • **Versatile for All Instruments:** Optimized for bass but equally powerful on electric guitar, acoustic, and keyboards—polish any signal chain effortlessly.
- • **Studio-Grade Optical Compression:** Experience smooth, musical compression that preserves your bass’s natural tone with low noise and high headroom.
- • **Iconic R Series Lighting & Feedback:** Ambient LED modes plus a real-time gain reduction indicator keep you visually connected to your compression settings.

## Overview

The JOYO SCYLLA R-27 Bass Compressor Pedal features a genuine optical compressor circuit prized for transparent, low-noise compression. With six dedicated knobs—attack, release, ratio, tone, input, and output—it offers unparalleled control over your dynamics. Built in a rugged aluminum chassis with true bypass relay switching and ambient LED lighting, it’s designed for professional bassists and versatile enough for other instruments. Powered by a 9V DC adapter, it delivers polished, studio-quality compression that enhances sustain and smooths peaks without sacrificing your natural tone.

## Description

Buy JOYO Bass Compressor Guitar Pedal, Optical Circuit with Attack/Release/Ratio/Tone Control & Bypass (SCYLLA R-27). Free delivery and returns on eligible orders.

## Features

- OPTICAL COMPRESSOR CIRCUIT — STUDIO-GRADE TRANSPARENCY: The SCYLLA features a genuine optical compressor circuit using a light-dependent resistor (LDR) for smooth, musical compression that evens out dynamics without squashing your tone. Optical compression is prized in professional studios for its transparent, high-headroom response—controlling peaks and adding sustain while preserving your bass's natural character. Players describe the tone as "shockingly quiet"—a low-noise CMOS design that outperforms many compressors.
- 6-KNOB PRECISION CONTROL — ATTACK, RELEASE, RATIO, TONE, INPUT & OUTPUT: Sculpt your perfect compression with six dedicated controls. ATTACK adjusts how quickly compression engages—fast for smoothing aggressive pick attack, slow to preserve punchy transients. RELEASE controls how long compression holds—short for tight, percussive playing, long for smooth sustain. RATIO sets compression intensity from subtle 2:1 to heavy limiting. TONE adds unique timbral flexibility—brighten for presence, or darken for a warmer thump. INPUT and OUTPUT provide precise gain staging for any bass, from passive single coils to active humbuckers.
- BUILT FOR BASS — BUT VERSATILE FOR ALL INSTRUMENTS: While optimized for bass guitar, the SCYLLA's transparent optical circuit makes it equally capable with electric guitar, acoustic instruments, and even keyboards. Use it to tighten slap bass dynamics, smooth out fingerstyle passages, add sustain to clean leads, or control volume peaks in any signal chain. The subtle, musical compression won't color your core tone—it simply makes everything sound more polished and professional.
- ROAD-READY R SERIES DESIGN: True bypass switching—confirmed by relay design—preserves your instrument's natural tone when the pedal is disengaged. Encased in a rugged aluminum alloy, the SCYLLA features the iconic R Series ambient LED lighting with 3 modes (Sync, Always On, or Off) via a recessed switch on the underside. The smooth, responsive chrome knobs and sturdy footswitch are built to withstand heavy stomping night after night. A subtle gain reduction indicator LED shows compression activity in real time.
- JOYO QUALITY & AFTER-SALES CONFIDENCE: Backed by JOYO's decade-plus reputation for crafting innovative, budget-friendly gear. The SCYLLA is part of the R Series, built with upgraded precision components. Important: Powered by 9V DC adapter only (center negative, not included). Rated current: 100mA. Battery operation is not supported. For the quietest performance—especially with high-headroom optical circuits—use a regulated, isolated 9V power supply and avoid daisy-chaining with other pedals. Should any issues arise, please contact us through your desertcart order page.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BZVQ2LFY |
| Amperage | 100 Microamps |
| Audio Output Effects | Compression |
| Best Sellers Rank | 1,370 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 1 in Bass Compression Effects |
| Brand | JOYO |
| Brand Name | JOYO |
| Colour | Red |
| Connector Type | 1/4-Inch Straight |
| Controls Type | Knob |
| Country of Origin | China |
| Customer Reviews | 4.3 out of 5 stars 164 Reviews |
| Hardware Interface | 1/4-inch Audio |
| Included Components | Power Supply (DC 9V, center negative) [Only] |
| Item Dimensions | 10.9 x 4.8 x 6.7 centimetres |
| Item Dimensions L x W x H | 10.9L x 6.7W x 4.8H centimetres |
| Item Type Name | Bass Effects |
| Item Weight | 240 Grams |
| Item weight | 240 Grams |
| Manufacturer | JOYO Technology |
| Manufacturer Part Number | 031-00R27-0010 |
| Model Name | JOYO SCYLLA |
| Model Number | Manufacturer-JOYO-R27-0010 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Corded Electric |
| Product Warranty | 1-year manufacturer warranty we stand behind the quality of our product. This warranty covers any manufacturing defects in materials or workmanship for one year from the date of purchase. If you encounter any issue, please contact us directly. We will provide a replacement, repair, or refund after we receive and verify the returned item. |
| Product dimensions | 10.9L x 6.7W x 4.8H centimetres |
| Signal Format | Analog |
| Sound Profile | Transparent, smooth, high-headroom, low-noise |
| Style | Bass,Compressor |
| Voltage | 9 Volts (DC) |

## Product Details

- **Brand:** JOYO
- **Colour:** Red
- **Item weight:** 240 Grams
- **Product dimensions:** 10.9L x 7.2W x 4.8H centimetres
- **Style:** Bass,Compressor

## Images

![JOYO Bass Compressor Guitar Pedal, Optical Circuit with Attack/Release/Ratio/Tone Control & Bypass (SCYLLA R-27) - Image 1](https://m.media-amazon.com/images/I/71QKFfx9M5L.jpg)
![JOYO Bass Compressor Guitar Pedal, Optical Circuit with Attack/Release/Ratio/Tone Control & Bypass (SCYLLA R-27) - Image 2](https://m.media-amazon.com/images/I/71LHjpNrf-L.jpg)
![JOYO Bass Compressor Guitar Pedal, Optical Circuit with Attack/Release/Ratio/Tone Control & Bypass (SCYLLA R-27) - Image 3](https://m.media-amazon.com/images/I/714tU7Dp-PL.jpg)
![JOYO Bass Compressor Guitar Pedal, Optical Circuit with Attack/Release/Ratio/Tone Control & Bypass (SCYLLA R-27) - Image 4](https://m.media-amazon.com/images/I/71gmq-kkyzL.jpg)
![JOYO Bass Compressor Guitar Pedal, Optical Circuit with Attack/Release/Ratio/Tone Control & Bypass (SCYLLA R-27) - Image 5](https://m.media-amazon.com/images/I/716ZXljR75L.jpg)

## Available Options

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

## Questions & Answers

**Q: Does this pedal work for Bass?**
A: Yes, of course. Designed for Bass, the R-27 SCYLLA, a compressor pedal, low noise and high dynamic.

**Q: Does this pedal come with the power supply or adapter?**
A: No, both are not included. I highly recommend JOYO mutli-tipped 9V adapter and power supply with noise reduction technology. Because an incompatible power supply may cause the noise, pedal damage, can't turn on, powered but can't work properly.

**Q: How to reduce noise from external equipment?**
A: Please check carefully before playing! 1.If the circuit shielded of electric guitar is bad, may cause the noise. 2.The amplifier without ground wire or Invalid connection. 3.Poor quality instrument cable and pickups cause noise, damage or no sound.

**Q: What should we do if the pedal does not work?**
A: First, please read the instructions carefully. Then, check that the power supply is suitable. Secondly, check whether the product packaging is damaged. If you still have questions, please let me know by email. We will reply quickly within 24 hours!

## Frequently Bought Together

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-08-26*