# SL-P0855A

> SL-P0855A (iPhone/iPad app by Rainbow Audio GmbH.)

- Source: https://appshunter.io/ios/app/sl-p0855a/id1559165444 (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 9.0 · 34 MB
- Languages: English, Chinese, Chinese
- Released: 2021-11-04
- Data updated: 2026-06-05
- User reviews in markdown: https://appshunter.io/ios/app/sl-p0855a/id1559165444/reviews.md

## What is SL?

The app is designed for use with RAINBOW CAR AUDIO dsp amp SL-P0855A. 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 1 release)

### 1.0.0 — 2021-11-04

No release notes.

## Apps similar to SL

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [ZD 8.4 PRO DSD](https://appshunter.io/ios/app/zd-84-pro-dsd/id1630340845) | — | Free | Utilities |
| [Blaupunkt GTD 21616 A](https://appshunter.io/ios/app/blaupunkt-gtd-21616-a/id6495972071) | — | Free | Utilities |
| [Epic3Programmer](https://appshunter.io/ios/app/epic3programmer/id1093613122) | 4.3 (3) | Free | Utilities |
| [HAWE eControl](https://appshunter.io/ios/app/hawe-econtrol/id1108492902) | — | Free | Utilities |
| [miniDSP control App](https://appshunter.io/ios/app/minidsp-control-app/id945240204) | 2.0 (8) | Free | Utilities |
| [Xiangbizi SOUND](https://appshunter.io/ios/app/xiangbizi-sound/id6464008441) | 2.7 (103) | Free | Utilities |

## 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)
- [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 2026-06-05.*