Is overdrive, chorus, delay, etc built in?

Yes, there are 40 effects built-in including Noise Gate, Overdrive, Distortion, Delay, Modulation (Chorus, Flanger, Phaser, Tremolo..etc.) and Reverb. You can adjust effects using the control knobs on the amp, or take a deep dive into all of these features and edit your tones in the Spark app that comes free with the Spark amp.

Have you replaced the grounding issues with the power supply not being grounded? I read it causes hum issues

Hum issues can come from many places and 3 prong plug doesn't always get it. Did you try a ground lift? The electrical circuitry in your house (or whatever structure you're in) can cause hum. Florescent lights, f'rinstance. Do you have single coil pickups? find out. That's why Gibson made the "Humbucker". So many issues that wont be resolved with 3 prong plug. I'm looking for a battery powered amp like this. If it was batt powered (self contained) I would buy one and hum wouldn't be an issue (except for maybe single coils under flourescent lamps). Also, your amp may hum if don't know the lyrics.

Is it for bass guitar?

Spark is an amp for bass, electric and acoustic guitar. There are 10,000+ tones and auto chords.

Are the presets built in or do you have to buy them?

Yes, there are factory presets built into the amp itself, plus lots more you can load in from the accompanying free Spark app. You also can find thousands more presets and tones free of charge when you log into Spark ToneCloud.

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Spark Pearl Guitar Amplifier Electric, Bass and Acoustic Guitar 40-Watt Combo Practice Amp with Spark Mobile App (Pearl)

Spark Pearl Guitar Amplifier Electric, Bass and Acoustic Guitar 40-Watt Combo Practice Amp with Spark Mobile App (Pearl)

Product ID: 422804294

Details

Brand
Positive Grid
Color
Pearl
Compatible Devices
Laptop Tablet
Material
Metal Plastic
Output Wattage
40 Watts

🎸40W versatile power

📱App-driven amp modeling

🔊Custom-tuned speakers

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VT142186

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In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
Positive Grid
Color
Pearl
Compatible Devices
Laptop Tablet

Description

🎶 Spark your sound, ignite your jam — practice just got legendary!

SLEEK SOCIAL READY - Pearl white design with Bluetooth streaming to double as your stylish party speaker.
BUILT IN EFFECTS SUITE - Delay, Reverb & Modulation onboard—no pedals needed to craft your signature sound.
SEAMLESS SONG LEARNING - Auto-chord display syncs with Spotify, Apple Music & YouTube for real-time practice.
JAM SMARTER NOT HARDER - AI-powered virtual bass & drums that learn your style for instant jamming sessions.
ENDLESS TONE EXPLORATION - Access 50,000+ amp and FX presets on ToneCloud to nail any sound from clean to metal.

The Positive Grid Spark Pearl is a 40-watt tube combo amp designed for electric, bass, and acoustic guitars. It features intelligent AI-driven virtual bandmates, over 50,000 amp and effects presets via the Spark app, and real-time chord display synced with popular music platforms. With custom speakers, Bluetooth streaming, and built-in effects, it’s a compact powerhouse perfect for practice, learning, and social music moments.

Specifications

ASIN	B09VBZM2L6
Amplifier Type	Tube
Best Sellers Rank	#14,419 in Musical Instruments ( See Top 100 in Musical Instruments ) #58 in Combo Guitar Amplifiers
Brand	Positive Grid
Color	Pearl
Compatible Devices	Guitar
Connector Type	6.35mm Jack, USB
Customer Reviews	4.7 out of 5 stars 8,633 Reviews
Enclosure Material	Stainless Steel
Global Trade Identification Number	00855316004552
Item Dimensions D x W x H	13.78"D x 7.48"W x 7.08"H
Item Weight	15.6 Pounds
Manufacturer	Positive Grid
Material	Stainless Steel
Mfr Part Number	855316004552
Model Name	Spark
Model Number	855316004552
Number of Bands	3
Output Channel Quantity	1
Output Wattage	40 Watts
Power Source	Corded Electric
Product Dimensions	13.78"D x 7.48"W x 7.08"H
Speaker Size	1 Centimeters
UPC	855316004552
Unit Count	1.0 Count
Warranty Description	1 Year Warranty

Reviews

C**.

14.12.2020

C**5

20.05.2021

S**U

19.05.2025

J**.

17.09.2021

C**S

2.08.2024

S**3

28.10.2022

F**O

6.06.2023

J**K

11.07.2021

C**C

17.03.2021

R**R

9.11.2021

M**.

2.06.2024

R**Y

3.11.2022

C**5

21.06.2022

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