Comparison

GSDSP Quantum Filter vs Divided 11 Guitar Amplifier

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

GSDSP Quantum Filter

This audio effect plugin offers analog-modeled filters with flexible routing and dynamic modulation for creative sound design. It provides extensive control over tone shaping and complex filtering with various filter types and configurations.

Highlights
  • Analog-modelled filters
  • 11 filter modes
  • Series and parallel routing
  • Dynamic modulation support
  • Stereo and dual mono modes
  • MIDI control integration
Features
Read full description

Analog warmth meets flexible routing and dynamic modulation in a filter workstation built for creative sound design. Analog-Modelled Filters Quantum Filter uses resonant, analog-modelled filter designs that behave smoothly and musically across the entire spectrum. With no cramping, stepping, or digital artefacts, the filters remain stable even under rapid modulation. At high resonance settings they can reach self-oscillation, similar to classic hardware circuits. Filter Types & Routing Choose from 11 filter modes, including Lowpass, Highpass, Bandpass, Notch, Shelving options, Bell, and Ladder Lowpass in 1–4 pole configurations. Combine filters in series (up to three stages) or parallel (up to two), resulting in over 2,000 possible routing combinations for detailed tone shaping and complex layered filtering. Built for Modulation Designed to handle fast, artefact-free modulation, Quantum Filter responds cleanly even under rapid parameter changes. Its stability makes it suitable for dynamic environments, rhythmic modulation, or complex movement across multiple filter stages. Stereo and Dual Mono Switch between stereo and dual mono modes to shape the stereo image. In dual mono mode, left and right channels can move independently, enabling asymmetric movement, wider imaging, or separate modulation paths for each side. MIDI Control Quantum Filter integrates ADSR & AR modulators that respond directly to MIDI, allowing envelope-driven filter motion that behaves like a synthesizer’s filter section. This integration adds expressive control for rhythmic gating, animated sweeps, and dynamic shaping based on your playing or sequencing. Quantum Filter is an AUv3 audio effect plugin compatible with Logic Pro, AUM, Cubasis, GarageBand and many more. A Desktop version is also available for Windows and macOS (VST3 / AU / AAX). More information here: https://gs-dsp.com/products

About

Divided 11 Guitar Amplifier

This app emulates a boutique Class A tube amplifier, offering crisp, clear tones with versatile controls. It includes advanced features like a noise gate and customizable cabinet simulations with multiple microphone options.

Highlights
  • Class A boutique amplifier emulation
  • Single channel with Volume, Treble, Bass, Master controls
  • Tight and Harsh filters
  • Adjustable noise gate
  • Six cabinet options
  • Four microphone emulations with position controls
Features
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"A Class A boutique amplifier plugin with crisp, clear tone" Nembrini Audio Divided 11 Class A Boutique Guitar Amplifier is modeled on Divided by 13 CJ11*. Divided 11 is a Class A combo amplifier, tube-rectified, with a single channel and simple controls for Volume, Treble, Bass, and Master. Divided 11 delivers a crisp, clear tone that saturates extremely well, offering a very balanced sound across the frequency spectrum. FILTERS - Tight : reduces low frequency content tightening the low range - Rumbling: reduces the low-frequency content - Harsh: reduces the high-frequency content NOISE GATE - Threshold: defines the level where the gate is activated - Range: selects the quantity of noise reduction - Gate : Adjust the gate speed CABINETS With Nembrini Audio Divide 11 Guitar Amplifier is possible to choose between six different guitar cabinets, four microphone emulations with on/off axis position switch, continuous position and distance knobs. Works as a standalone app, AudioUnit v3 effect, or Inter-App Audio effect Legal Disclaimer: Divided By 13 CJ11 is a registered trademark of Divided By 13 Amplification. Divided 11 was developed by Nembrini Audio SRL based on its own modelling techniques. Divided By 13 Amplification has not endorsed nor sponsored the Divided 11 in any manner, nor licensed any intellectual property for use in this product.

Screenshots

GSDSP Quantum Filter3 screens
Divided 11 Guitar Amplifier2 screens

Verdict

The call

The clearest difference is update cadence: GSDSP Quantum Filter at every 6 weeks against Divided 11 Guitar Amplifier's every 28 months. GSDSP Quantum Filter also leads on price ($14.99 vs $19.99) and ratings volume (3 vs 1). On rating, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

GSDSP Quantum Filter costs $14.99 and Divided 11 Guitar Amplifier $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for GSDSP Quantum Filter against 5.0 for Divided 11 Guitar Amplifier. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

UpkeepUpdate frequency

GSDSP Quantum Filter ships an update every 6 weeks, Divided 11 Guitar Amplifier every 28 months. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

Scorecard4 real differences · 6 level
GSDSP Quantum Filter versus Divided 11 Guitar Amplifier: the parameters behind the verdict, then further details
ParameterGSDSP Quantum FilterDivided 11 Guitar Amplifier
Price$14.99 — better$19.99
Rating5.0 (3 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings3 — better1
Update frequencyEvery 6 weeks — betterEvery 28 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15
Further details — not scored
Size77 MB65 MB
Age rating4+4+
DeveloperGustav ScholdaNembrini Audio

Customer experience

GSDSP Quantum Filter

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Divided 11 Guitar Amplifier

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

GSDSP Quantum Filter

No in-app purchases

None

Divided 11 Guitar Amplifier

No in-app purchases

Questions

Is GSDSP Quantum Filter free?
GSDSP Quantum Filter costs $14.99, with no in-app purchases.
Is Divided 11 Guitar Amplifier free?
Divided 11 Guitar Amplifier costs $19.99, with no in-app purchases.
Which has better reviews, GSDSP Quantum Filter or Divided 11 Guitar Amplifier?
GSDSP Quantum Filter and Divided 11 Guitar Amplifier are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.
Do GSDSP Quantum Filter or Divided 11 Guitar Amplifier have ads?
Neither GSDSP Quantum Filter nor Divided 11 Guitar Amplifier shows ads.
Which is updated more often, GSDSP Quantum Filter or Divided 11 Guitar Amplifier?
GSDSP Quantum Filter ships an update every 6 weeks, and Divided 11 Guitar Amplifier every 28 months. Most recently, GSDSP Quantum Filter was updated on October 24, 2026 and Divided 11 Guitar Amplifier on October 13, 2026.

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