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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Positive Grid Spark Pearl 40W Smart Guitar Practice Amp & Bluetooth Speaker

Product ID: 422804294

Details

Brand
Positive Grid
Color
Pearl
Compatible Devices
Guitar
Material
Stainless
Output Wattage
40 watts

🎸40W powerful amp output

🔊Bluetooth streaming + custom speakers

🤖AI-powered Smart Jam & chord display

581471CFA

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Description

🎶 Elevate your practice, own the jam session!

DUAL PURPOSE DESIGN - Sleek pearl finish with custom speakers doubles as a premium Bluetooth music streamer.
PRO READY CONNECTIVITY - 6.35mm jack and USB recording make capturing your jams effortless and studio-quality.
SEAMLESS SONG LEARNING - Auto chord display syncs with Spotify, Apple Music & YouTube for real-time practice.
ENDLESS TONE PLAYGROUND - Access 50,000+ amp and FX presets on ToneCloud to craft your signature sound.
JAM SMARTER NOT HARDER - Spark AI learns your style and generates live bass & drums for instant band vibes.

The Positive Grid Spark Pearl is a 40W digital modeling guitar amp that combines AI-driven Smart Jam technology with access to over 50,000 amp and effects presets. It features real-time chord display synced with popular streaming platforms, Bluetooth connectivity with custom-designed speakers, and USB recording capabilities, making it a versatile tool for electric, acoustic, and bass guitarists seeking both practice and performance excellence.

Specifications

ASIN	B09VBZM2L6
Amplifier Type	Digital Modeling
Best Sellers Rank	#12,385 in Musical Instruments ( See Top 100 in Musical Instruments ) #51 in Combo Guitar Amplifiers
Brand	Positive Grid
Color	Pearl
Compatible Devices	Guitar
Connector Type	6.35mm Jack, USB
Customer Reviews	4.6 4.6 out of 5 stars (8,641)
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 Highlight	100k+ tones, Spark AI, Smart Jam, tuner & USB recording. For electric, acoustic & bass guitars.
Item Weight	15.6 pounds
Manufacturer	Positive Grid
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
Speaker Size	1 centimeters
UPC	855316004552
Unit Count	1 Count
Warranty Description	1 Year Warranty

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581471CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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