# PA-4.8

> PA-4.8 (iPhone/iPad app by Rainbow Audio GmbH.)

- Source: https://appshunter.io/ios/app/pa-48/id6751022849 (this page in markdown: same URL + `.md`)
- Developer: [Rainbow Audio GmbH](https://appshunter.io/developer/1284821198)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 15.6 · 5 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2025-08-14
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/pa-48/id6751022849/reviews.md

## What is PA?

The app is designed for use with RAINBOW CAR AUDIO dsp PA-4.8
This app gives you tools needed to fine tune virtually every aspect of your car audio system. Whether you ara a professional installer or an obsessive audiophile, this app allows you to realize the true potential of DSP tuning tools.
Features: 31 bands EQ parametric / grahpic equalization per channel. Phase correction.
Crossover type, frequency and slope adjustments. Independent input and output level controls.Time Delay. Input summing and linking. 6 customizable presets.


## Version history (last 3 releases)

### 1.0.2 — 2025-09-16

Optimize the adaptation of EQ interface

### 1.0.1 — 2025-08-29

Fix English language issues

### 1.0 — 2025-08-15

No release notes.

## Apps similar to PA

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [VIBE DSP](https://appshunter.io/ios/app/vibe-dsp/id1669128332) | — | Free | Utilities |
| [CarAVAssist](https://appshunter.io/ios/app/caravassist/id1478702414) | 1.5 (215) | Free | Utilities |
| [Car Starry Sky](https://appshunter.io/ios/app/car-starry-sky/id6738410498) | — | Free | Utilities |
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| [WOnline: Family Tracker](https://appshunter.io/ios/app/wonline-family-tracker/id1583003204) | 3.8 (173) | Free | Utilities |
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## More apps by Rainbow Audio GmbH

- [DSP 1.8 RC](https://appshunter.io/ios/app/dsp-18-rc/id1284821199)
- [DSP 1.8](https://appshunter.io/ios/app/dsp-18/id1289173178)
- [SL-PRO-P1250A](https://appshunter.io/ios/app/sl-pro-p1250a/id1559165354)
- [SL-P0855A](https://appshunter.io/ios/app/sl-p0855a/id1559165444)
- [EL-P0455A](https://appshunter.io/ios/app/el-p0455a/id1593168733)
- [Rainbow Audio Tuneit](https://appshunter.io/ios/app/rainbow-audio-tuneit/id1663607510)

All apps by Rainbow Audio GmbH: https://appshunter.io/developer/1284821198

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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 2026-05-19.*