# PhaseII — Dual Stereo Phaser AudioUnit

> Dual stereo phaser audio effect plugin with vintage vibe and versatile controls. (iPhone/iPad app by Rob Jackson.)

- Source: https://appshunter.io/ios/app/phaseii/id6751580786 (this page in markdown: same URL + `.md`)
- Developer: [Rob Jackson](https://appshunter.io/developer/1072346998)
- Category: Music, Entertainment
- Price: $1.99
- Rating: 5.00/5 from 2 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 13 MB
- Released: 2025-08-28
- Data updated: 2026-08-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/phaseii/id6751580786/reviews.md

## What is PhaseII?

PhaseII Dual Stereo Phaser Plugin (AUv3)

PhaseII is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic Pro, GarageBand or AUM.

Overview

PhaseII is a dual stereo phasing machine with a vintage vibe! As well as traditional super-wide stereo phasing effects, PhaseII can also produce all manner of swirly modulated goodness by running the independent phasing engines in parallel or series. Selectable modes allow quick access to finely-tuned settings under the hood that "just work", from subtle to extreme - just the thing if you find some phasers to be overly complex with too many parameters! Set Rate and Depth to taste, adjust the stereo Width, then you can even add some gritty Drive for some "analog" warmth.

Controls

Active - Bypasses the effect (Off) or selects one of the following processing modes:

Stereo - Two independent phasers for the left and right channel, with LFOs 90 degrees out of phase for a stereo effect, determined by the Width control.

Parallel - Two independent stereo phasers for the incoming audio, which are then summed together at the output stage. The LFOs for each of the four phasers are 90 degrees out of phase for a stereo effect, determined by the Width control.

Series - Two independent stereo phasers with Phase I processing incoming audio, which is then passed on to Phase II for a double-helping of phasey goodness at the output stage! This is potentially the most dramatic phasing effect, especially with the Width set to maximum as each of the four phaser LFOs are 90 degrees out of phase.

The following controls apply to each phase stage, referred to as Phase I or Phase II:

Phase I/II - Toggles the Phase I or Phase II processing engine On or Off.

Rate - Sets the rate of the phaser LFO in Hz.

Depth - Sets the depth of the phase effect.

Mode - Selects one of four different modes. Each mode configures several "under the hood" settings - think of each mode as a mini preset for internal parameters. Modes range from subtle (I) to extreme! (IV).

The following controls are global:

Width - Adjusts the stereo width from super-wide to monophonic. Note this only adjusts the "wet" phased sound so your original stereo image remains intact for the "dry" signal.

Drive - Applies an optional amount of warm overdrive to the phaser processing only, for a bit of a vintage vibe!

Mix - Balances the processed audio with the incoming / dry signal. At zero, the output is totally dry, and at 100%, the output is totally wet and phased to the max!

The phasing effect can sometimes create loud resonant frequency peaks that could result in clipping. To protect against this, soft limiting is applied at both the phasing processing stage and at the final summed output. If the input levels are high, this can add to the "analog" like sound of PhaseII when compression and saturation occurs.

About The UI

Not everyone likes the UIs of my latest (2025) plugins - I get it. However, the simplistic and generic approach allows me to (a) 99% focus on the DSP, sound quality and CPU performance, and (b) significantly reduce the development (and potential maintenance) time, which is reflected in my pricing.

For more info and support please visit:

www.waverley-instruments.com/robjackson

## Key features

- Dual stereo phasing engines
- Parallel and series processing modes
- Selectable effect modes (subtle to extreme)
- Adjustable rate, depth, and width
- Optional drive for analog warmth
- Soft limiting to prevent clipping
- Mix control for wet/dry balance

## Chart rankings

- #192 in Top Paid · Music (US App Store)

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/phaseii/id6751580786/reviews.md

### 5/5 — Wow such a spacious Phaser!

*2025-09-11*

Absolutely love the wide and spacious stereo effects that are possible with this app! One of the best phasers I’ve ever heard and I love this on guitar. Another stunning release by Rob Jackson. I’m a huge fan of all these awesome affordable plugins. Keep ‘m coming Rob! 🤘😎👍

### 5/5 — Fantastic Rotary sounds- improves literally all sounds.

*2025-09-01*

Might be my favorite along with Poly Delay.

## Frequently asked questions about PhaseII

### What is PhaseII?

PhaseII is a dual stereo phaser audio effect plugin that can run standalone or within AU compatible hosts like Logic Pro, GarageBand, or AUM. It offers a vintage-inspired phasing sound with flexible control over stereo width, rate, depth, and drive.

### What devices does PhaseII support?

PhaseII is supported on Mac, iPhone, iPad, and iPod. It utilizes the AUv3 audio unit format, making it compatible with a wide range of iOS and macOS audio applications.

### How much does PhaseII cost?

PhaseII is a paid application, available for $1.99. This one-time purchase grants you access to all of its features and capabilities.

### What are the different processing modes in PhaseII?

PhaseII offers three main processing modes: Stereo (independent phasers for left/right channels), Parallel (two independent stereo phasers summed), and Series (two independent stereo phasers processing sequentially for a more dramatic effect). Each mode offers unique stereo phasing characteristics.

### Does PhaseII have ads?

No, PhaseII does not contain advertisements. As a paid application, it provides an uninterrupted user experience focused solely on audio processing.

### How often is PhaseII updated?

PhaseII was last updated on September 15, 2025, with version 1.0.3. This indicates a developer actively maintaining and improving the application.

### What is the age rating for PhaseII?

PhaseII has an age rating of 4+, meaning it is suitable for users of all ages. Its content is not considered mature or inappropriate for younger audiences.

### What makes PhaseII's sound 'vintage'?

The 'vintage vibe' of PhaseII is achieved through its selectable modes, optional drive control for warm overdrive, and soft limiting that can add compression and saturation at high input levels, mimicking analog warmth.

## Version history (last 3 releases)

### 1.0.3 — 2025-09-15

Small UI button and slider cosmetic tweaks for improved contrast.

### 1.0.2 — 2025-09-03

Bug fix in "under the hood" parameter calculations in the Phase II section.
Fixed typo in User Guide.

### 1.0.1 — 2025-08-28

No release notes.

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## More apps by Rob Jackson

- [moodscaper](https://appshunter.io/ios/app/moodscaper/id1088768073)
- [pianoscaper](https://appshunter.io/ios/app/pianoscaper/id1177444402)
- [moodscaper SE](https://appshunter.io/ios/app/moodscaper-se/id1247452905)
- [touchscaper](https://appshunter.io/ios/app/touchscaper/id1250344299)
- [guitarscaper](https://appshunter.io/ios/app/guitarscaper/id1316544251)
- [moodscaper LE](https://appshunter.io/ios/app/moodscaper-le/id1435065372)

All apps by Rob Jackson: https://appshunter.io/developer/1072346998

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*