Stereo Modulator vs SGA Phoenix
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stereo Modulator
This audio effect plugin transforms mono sound into stereo, adding width and depth. It uses micro-delays to create a natural sense of space, with optional LFO modulation for a Leslie speaker-like effect without pitch shifting. Ideal for creating separation in mixes, especially for guitars and vocals.
- Mono to stereo conversion
- Adjustable stereo width
- Optional LFO modulation
- Micro-delay de-correlators
- Creates natural spatial depth
- No pitch shifting or echo
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Stereo Modulator is an AU3 effect that converts mono sound into stereo, with an adjustable width and optional LFO modulation. It works by using a bank of randomized stereo de-correlators that apply micro-delays to introduce random differences between the spectrums of the left and right audio channels. In its output we hear a natural sense of space that is not present in mono recordings. It's similar to the sound space one gets from using a stereo reverb plugin except that it is tight and clear, without echo. It can operate either as a static effect or it can be gently modulated by a low-frequency oscillator. The modulation is akin to the sound of a Leslie speaker, except that it doesn't do any pitch shifting, so the output remains focused and tuning is not compromised. This effect is especially useful for mixing overdriven electric guitar sounds together with vocals. Using Stereo Modulator on the guitars, we can push them out to the sides, creating a space in the centre for the vocal to cut through, without needing to reduce the volume of the guitars. NOTE: Stereo Modulator is an AU3 plugin only, not a standalone app. To use it, you will need an audio unit host app such as Garageband or Audiobus.
SGA Phoenix
This app provides authentic analog preamp sounds for music production. It simulates various triode and JFET circuits in real-time to add warmth, color, and depth to mixes and masters. EQ can be adjusted before or after the preamp, with auto gain and oversampling for professional results.
- Authentic analog sound simulation
- Triode and JFET preamp models
- Adjustable EQ placement
- Auto Gain control
- Automatic oversampling
- Wet/Dry mixing
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SGA Phoenix brings the authentic sound of five analog preamps to your AUv3 compatible host. Each preamp derives its unique sonic character from a different active element (12AX7, 12AT7, and 12AU7 triodes, and J201 and 2N5457 JFET transistors). To achieve the most authentic analog sound, each preamp circuit is simulated in real time using Shattered Glass Audio’s state-of-the-art circuit simulator. Use Phoenix to add color, warmth, dirt, depth, and vibe to your mixes and masters or as a saturation compressor. Key features: - Authentic analog sound through real-time high-performance circuit simulation. - Three preamps featuring triodes 12AX7, 12AT7, and 12AU7. - Two preamps featuring JFET transistors J201, 2N5457. - Multiple types of EQs. - EQ can be taken out of the signal path or placed either before or after the preamp. - Auto Gain - Automatic 4x oversampling to control aliasing - Wet/Dry mixing. Phoenix is primarily an AUv3 effect. To use Phoenix as a plug-in, you will need an AUv3 compatible host such as Garageband, AUM, etc. Phoenix application is there to provide a user manual and a chance to use Phoenix with the microphone input. You can try Phoenix on a macOS or a Windows based, machine by downloading the demo version of the plug-in (VST3, AUv2, AAX) from our website https://www.shatteredglassaudio.com and running it in a DAW of your choice. Sonically speaking there are no differences between the iOS and macOS/Windows versions of Phoenix.
Screenshots
Verdict
The clearest difference is price: Stereo Modulator at $2.99 against SGA Phoenix's $24.99. Stereo Modulator also leads on update cadence (every 3 months vs every 14 months) and iOS requirement (10.0 vs 15.8). On rating, ratings volume, ads and in-app purchases 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
Stereo Modulator costs $2.99 and SGA Phoenix $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Stereo Modulator against 5.0 for SGA Phoenix. Both are backed by a comparable volume of ratings — 3 and 4 respectively.
Stereo Modulator ships an update every 3 months, SGA Phoenix every 14 months. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.
| Parameter | Stereo Modulator | SGA Phoenix |
|---|---|---|
| Price | $2.99 — better | $24.99 |
| Rating | 5.0 (3 ratings) | 5.0 (4 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 | 4 — better |
| Update frequency | Every 3 months — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.8 |
| Further details — not scored | ||
| Size | 2 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Blue Mangoo Consulting Company Limited | Shattered Glass Audio |
Customer experience
Stereo Modulator
SGA Phoenix
In-app purchases
Stereo Modulator
No in-app purchases
SGA Phoenix
No in-app purchases









