To the page content

Modelling Combo Amplifier for Electric Guitar, Acoustic Guitar and Electric Bass

  • Smart Guitar Amplifier and App
  • With on-board control and Smart functions such as Smart Jam Live, Auto Chords and over 50,000 sounds
  • Smart Jam: AI-generated backing tracks
  • Auto Chords: shows the chords for every Youtube video
  • Amp and effect library with over 50,000 variations, growing daily
  • Channels: 1
  • Power: 40 watts
  • Equipped with: 2 x 4" (10.2 cm) speakers
  • Frequency response: 20 Hz – 20,000 Hz
  • Cabinet construction: Bass reflex
  • Controls: Amp Type, Gain, Bass, Mid, Treble, Master, Mod, Delay, Reverb, Output Volume, Music Volume
  • Switch: 4 programmable presets
  • Tap/tuner
  • Effects: 43 onboard (expandable via Spark App)
  • Input: 6.3 mm jack
  • Phones/Rec output: 3.5 mm stereo mini jack
  • Aux input: 3.5 mm stereo mini jack
  • USB port
  • Power supply connection
  • Dimensions (W x D x H): 350 x 180 x 190 mm
  • Weight: 5.2 kg
  • Colour: Pearl
  • Includes power supply and USB cable
  • Available since September 2023
  • Item number 575603
  • Sales Unit 1 piece(s)
  • Powerrate in W 40 W
  • Speaker 2x 4"
  • Memory slots 4
  • Reverb Yes
  • Effects Processor Yes
  • External FX Loop No
  • Line input No
  • Recording Output Yes
  • MIDI Interface No
  • Connection for External Speaker No
  • Headphone Output Yes
  • Footswitch connection No
  • incl. footswitch No
  • Weight in kg 5,2 kg
  • Power 40 W
  • Power in Watts 40
  • Power in W 40 W
  • Speaker size 2x 4"
  • Power (Manufacturers Specs) 40 W
  • Channels 1
  • Number of HT-Speaker 0
  • Equalizer 7-Band
  • Compressor Yes
  • HT Speaker in Inch No
  • Limiter Yes
  • Number of Midrange Speaker 0
  • Midrange Speaker in Inch No
  • Line Input Yes
  • Number of Bass Speaker 2
  • Bass Speaker in Inch 4"
  • Ways 1-Way
  • Colour White
  • Width 350 mm
  • Height 190 mm
  • Depth 180 mm
  • Line Out No
  • Weight 5,2 kg
  • Accu No
  • Housing Material Wood
  • Construction Type Standard
  • Using for Guitar
  • Stand Flange No
  • Flyable No
  • Analog Inputs 1
  • EQ per Channel No
  • Media Player No
  • Voice Assistant App
  • Remote Control BT
  • Wireless Mic Handhleld / Headset No
  • Effect Yes
  • Vertical Beam Angle 70 °
  • Frequency Range (-10dB) from 20 Hz
  • Frequency Range (-10dB) to 20000 Hz
  • Low Cut No
  • Ground Lift No
229 €
All prices incl. VAT
In stock
In stock

This product is in stock and can be shipped immediately.

Standard Delivery Times
1

Three in one

With its Spark series, the American company Positive Grid has broken new ground with the concept of a "smart amp". More than just a buzzword, the Positive Grid Spark 40 lives up to its "smart" moniker by not only combining an amplifier, USB audio interface, and Bluetooth speaker in one ultra-compact device, but also by offering a whole suite of intelligent control options via the free Spark App. The amp is also a breeze to operate: With voice command functionality via the Spark App, the user can tell it to stream a Rock song or a Blues backing track, or even ask for a virtual band to accompany a performance. The app also provides access to over 50,000 professional-quality sound presets for guitar and bass, an Auto Chords function, a YouTube song library, and much more. With the Spark 40, Positive Grid proves that smart doesn't have to mean expensive.

Positive Grid Spark 40 PW modelling combo

Feature-packed simplicity

Although the Spark 40 has a wealth of features, it is first and foremost an intuitive and powerful amplifier for guitar and bass. The front panel features volume and gain controls as well as a three-band EQ section, a selection of essential effects, and a headphone output. Powered by a 40W class D power stage, the Positive Grid Spark 40 PW features a pair of 4" custom speakers. Those looking to tap into the full potential of the Spark 40 can access 33 amp models and 43 effects via the Spark App, where they can also explore and download thousands of additional tones created by others on the ToneCloud platform. Additionally, the Spark 40 can be connected to a computer via USB to start recording to any DAW software, and thanks to its Bluetooth functionality, the amp also serves as a fantastic-sounding portable speaker.

Positive Grid Spark 40 PW smart guitar amplifier and app

The all-in-one amp

Positive Grid's Spark App and the deep integration it offers between a smartphone and the Spark 40 amp is at the core of what makes this offering so unique. Those open to embracing the newest innovations will quickly discover the space-saving benefits of this three-in-one solution and the advantages of the cutting-edge technologies it employs when it comes to practising and learning. With the Spark App, users can bring a whole virtual band into their living room, which thanks to the voice command function does just what it is told - something that can't always be guaranteed with real-life bandmates! What is more, the extensive YouTube song library, which includes real-time chord charts and fingering diagrams, makes the Positive Grid Spark 40 PW an invaluable companion for anyone who is learning to play guitar or bass.

Positive Grid Spark 40 PW front grille with manufacturer logo

About Positive Grid

Positive Grid was founded in the Californian city of San Diego in 2013, and from the very beginning the company’s mission statement was to bridge the gap between mobile technologies such as smartphones, as well as the potential offered by the digital world, and the analogue feel of guitar and bass equipment. The company’s pursuit of this goal has produced a range of exciting products, the most significant of which is undoubtedly the award-winning BIAS FX 2 amp and effects modelling software platform. With its “Spark Amp” series, Positive Grid has combined the limitless possibilities that the digital world provides with conventional guitar and bass amplifiers. Positive Grid’s spirit of innovation and the speed with which new developments are produced is a clear indication of what this still relatively young company has in store for the future.

Connectors and controls on the Positive Gris Spark 40 PW modeling amplifier

The next step

The Positive Grid Spark lineup does not end with the Spark 40 amplifier and the Spark App: The Spark 40 is even easier to operate with the optional Spark Control, a wireless footswitch that is connected to the Positive Grid Spark 40 PW via Bluetooth and can be used to select between the amp's four presets. The four switches on the Spark Control can also be programmed with customised functions, for example to toggle between different effects or to start and stop backing tracks. If more power and volume are required, the Spark 40 can be complemented with the Spark Cab for a truly serious guitar rig setup. Positive Grid additionally offers an optional carrying case for users who want to use the Spark 40 on the go, as well as a variety of interchangeable grille covers for those looking to mix it up from the typical standard white look.

In the spotlight

36 Customer ratings

4.6 / 5

You have to be logged in to rate products.

Note: To prevent ratings from being based on hearsay, smattering or surreptitious advertising we only allow ratings from real users on our website, who have bought the equipment from us.

After logging in you will also find all items you can rate under rate products in the customer centre.

handling

features

sound

quality

22 Reviews

m
Great amp sounds in such a small device
maksf 29.12.2023
It's incredible how many realistic amps this little thing can deliver.

It makes you want to play more...and that's the important thing.
I wish I had this back in 1985 when I was a teenager.

Since I already rated this with well deserved 5 stars, I will add some cons:

1) ad/da conversion rate is 16bit/44.1kHz. Should be 24bit/48kHz.

2) the device should be manageable via a desktop app/USB. SInce you plug the USB cable for recording, it's a bit annoying to also have to use a mobile app via bluetooth (bluetooth makes more sense for the spark-mini)

3) There should be 8 knob presets (a LEAD preset is missing between CRUNCH and HI-GAIN) and they should be editable. The 4 switchable presets would then be redundant. One single place for changing the modelled amp would have been better.

4) The sound is a bit dark ~"bassy" (not annoying though). Luckily there is a useful EQ in the effects section that can help with that.

5) There are a few sounds on my VOX VT20x (in which I swapped the default speaker with a Celestion 8/15) that IMO are better, maybe due to the 24bit conversion rate or the loudspeaker. I bought the VOX new here at 159 EUR and the Celestion speaker at 30+ EUR. So with about 200 EUR (i.e. 90 EUR less than the spark, 2,5kg more) I still think the vox to be a better choice. The vox tone-room also offer more customization for amps and effects (unfortunately the vox doesn't have an USB audio interface).

The spark is also one of the few modelling amp with good sounding presets. The glassy and crunchy presets, even if not my first choice as far as the modelled amps go, sound really really good without any tweaking.
handling
features
sound
quality
6
1
Report

Report

D
A dream come true
DimitarR 30.04.2025
Okay, now that I've played it for about a month and a half I think I can give at least a somewhat informed opinion on the Spark. Let me say in advance that I only play by myself, mostly classic rock, 80's hair metal, thrash, punk, hard rock, well most things rock and metal basically. So it's mostly high gain tones for me, some crunchy ones, with a good amount of reverb, delay, and not many other effects.

I've been playing for the past 10 years on and off and I've never taken myself that seriously to invest thousands in equipment, right. But at some point you just have to, you find something's missing in your playing and you stop playing altogether because of that missing piece.
It's what happened to me - non-stop problems with VSTs, noise, lackluster tones, too much setup: it all just felt tedious and almost like a chore, so I pretty much gave it up. And then I discovered the Spark.

Man, let me tell you: this thing is a dream come true. It sounds absolutely incredible, and when I say incredible I mean it: at times I have to stop playing to be sure that this divinely amazing tone from the summit of Mount Olympus is coming from my guitar and not the backing track or song I'm playing over. A month and a half later I still turn it on and hit a chord and I'm completely blown away by it and drowned in a wave of sound, and I think that is testament enough to the amp's main goal: to make you play and make you enjoy playing again, to make you yearn to play so that you hear that goodness coming from your fingers.

On that note, this thing is LOUD. High-gain tones shake windows and "move air" even at 6 o'clock and I've never gone past because I enjoy having functioning ear drums. VERY loud, seriously. And the sound, I don't know how they do it, but it really is "room-filling" as is written on the box. You hear it all around you, coming in waves.

So anyways, before getting the Spark for me "playing guitar" was just endless tinkering with VSTs, and I MEAN ENDLESS only to try and get a tone that didn't want me to jam a pencil in my ear, but to no effect. If I'd spend that time actually playing music I'd probably be playing the Four Seasons backwards. With the Spark, you sit down, flick the switch, press a button to get your saved preset, and simply play. What else is there to say?

All of this is without even resorting to the app. Yes, the app gives you extended flexibility in terms of tones (and the Tone Cloud is really, really useful, you can get any tone with a click), but Positive Grid also implemented scumbag corpo add-on models there of course, so for example they removed the Wah pedal altogether due to it "overloading CPU" (what? xD) and now you have to buy it as some "signature" Jimi Hendrix DLC.

Positive Grid, kindly f**k off with that gaming industry bullshit.

Anyway, the amp is quite fantastic even on its own and without using the app at all although I do use it, it has many additional benefits like a tuner, backing tracks, smart chords and whatnot, you can read the brochure. But the add-on model needs to die a quick death everywhere.

In terms of build quality: it feels like a well-built little tank of an amp, quite sturdy and heavy. The plastic knobs are high-quality (at least I think so) and the whole unit just feels reliable and made to last, hopefully.

As for cons:
- I see people mentioning disconnects from the app. For me that's never happened, ever. I do have problems connecting the first time sometimes where it says that it doesn't find the amp, but with one or two retries it works fine.
- And I literally cannot think of anything else? Weird.

All in all, I am in love with the Spark. It has made playing an absolute joy. I've learned tens of new songs since I got it, I'm faster and more precise, and I have renewed motivation to play, if only just to listen to that amazing tone. And, so far, it has achieved nearly flawlessly every single tone I wanted out of it. I'm blown away by the flexibility and the quality of the tones and sounds coming through.

I cannot recommend it enough, it's a 10/10 for me.
handling
features
sound
quality
3
0
Report

Report

A
Such a clever and practical amp
Arkslippy 02.03.2024
I've a few amps but I was looking for one for my kitchen that was smaller and icould use with headphones, even without the ridiculous amount of setups though the app, it does that brilliantly, and I can just plug in and practice, but the app means I can play backing tracks, songs and lessons through it too from Spotify and you tube.

It's just ridiculously good

6 stats and the pearl white is lovely
handling
features
sound
quality
0
2
Report

Report

R
Great amp!
Ricksony 12.03.2024
Had a few amps in my day but nothing to match this. Superb.
handling
features
sound
quality
0
1
Report

Report