---
product_id: 92908326
title: "2 x in, 3 x Out Digital Signal Processor Extension Board for DSP"
price: "₨10782"
currency: LKR
in_stock: true
reviews_count: 2
url: https://www.desertcart.lk/products/92908326-2-x-in-3-x-out-digital-signal-processor-extension
store_origin: LK
region: Sri Lanka
---

# Compact 2x2 inch PCB size 2 RCA inputs & 3 RCA outputs Multi-interface connectivity 2 x in, 3 x Out Digital Signal Processor Extension Board for DSP

**Price:** ₨10782
**Availability:** ✅ In Stock

## Summary

> 🎛️ Elevate your audio game with pro-grade DSP extension—compact, versatile, unbeatable!

## Quick Answers

- **What is this?** 2 x in, 3 x Out Digital Signal Processor Extension Board for DSP
- **How much does it cost?** ₨10782 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/92908326-2-x-in-3-x-out-digital-signal-processor-extension)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **DIY Dream Board:** Perfect for designers and audio enthusiasts craving precision and expandability
- • **Compact Powerhouse:** 2” x 2” PCB fits seamlessly into any audio setup without hogging space
- • **Versatile Audio I/O:** 2 RCA inputs, 3 RCA outputs, plus AUX & PH-4Pos connectors for ultimate flexibility
- • **Plug & Play Integration:** Designed for effortless connection with APM2 DSP kernel board—no hassle, just sound
- • **Pro-Level Programmability:** Supports Miumax and SigmaStudios for deep customization and control

## Overview

The AA-AA11428 APM3 is a compact 2x2 inch digital signal processor extension board designed to expand audio input/output options for APM2 DSP systems. Featuring 2 RCA inputs, 3 RCA outputs, AUX and PH-4Pos connectors, it supports 2.0/2.1 audio configurations with easy integration and professional-grade programmability via Miumax or SigmaStudios. Ideal for DIY audio projects and professional setups alike.

## Description

Product description Description AA-AA11428 is the interface extension board specially designed to provide audio input and output interfaces for APM2. Taking customers’ common applications into consideration, APM3 works as a 2 x in, 3 x out extension board, suitable for audio 2.0 / 2.1 system. To maximumly satisfy different requirements of customers‘ projects, APM3 provides multiple kinds of interfaces, including 2 x RCA jacks, 1 x 3.5mm AUX IN jack, 2 x PH-4Pos connectors for audio input and 3 x RCA jacks, 1 x 3.5mm AUX IN jack and 2 x PH-4Pos connectors for audio output. Features 2 x 2 inches(50 x 50 mm) Compact PCB Size 2 RCA input, 3 RCA output 1 AUX input, 1 AUX output 1 PH-4PIN-2MM input, 1 PH-4PIN-2MM output Powered by DSP kernel board Suitable for audio 2.1 system Easy for Installation and Integration As APM3 offers multiple interfaces for audio input and output, it’s easy and simple to integrate APM2 and APM3 to your audio systems through cables connection. In addition, APM3 is in 2’’ x 2’’ compact size, the same size as APM2, making them simple to be installed in any cabinet without occupation of too much space to leave enough headroom for other components. Package Include 1pc AA-AA11428, APM3 1pc PH-2mm-10Pos Cable, 5cm / 1.97’’ Screws

Review: Just what I needed! 10/10! - I got all three boards, the dsp, the programmer and the i/o board. I am just using this one to do the dsp for my home audio sub. But it ended up being so good, I think I'm about to buy several more. For designers or diy type guys, this couldn't be better. Works perfectly as I was hoping it would. Fully programmable for however you need it. Programming was difficult, I'm not going to lie. Every single dip switch had to be set to the opposite of what the instructions and ai said it should be. Once I figured that out with a bunch of trial and error, then it was pretty much as the instructions said. But it took me a minute to figure that out first. Hopefully this info saves someone else a couple of hours. I wish I'd caught it earlier. The Miumax program from Wondom works very well and has MOST every setting you'll need. It is considerably easier than SigmaStudios. If you can get what you need done with this, I’d recommend doing that. Learning SigmaStudios was not an easy step. But it does give you a lot more control. Those are your two options to program this and they both worked 100% correctly for me. Once you flash it to the ICP5 (it says icp5, but it also seems to write the dsp board in this step) you can disconnect the icp5 and run the dsp and I/O board without the icp5. I really hope this helps out and gives anyone considering this the confidence to grab the 3 boards and go for it. Worked beautifully for my first project using this. !0/10 WOULD RECOMMEND! Going to buy two more this week.
Review: Very good price / quality ratio. - Product as described. Very good quality. Fast shipping.

## Features

- 2CKT RCA input, 3CKT RCA output
- 1CKT AUX input, 1CKT AUX output
- 1CKT molex Micro-Fit input, 1CKT molex
- Micro-Fit output,
- Powered by DSP kernel board

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #150,290 in Electronics ( See Top 100 in Electronics ) #2,282 in Home Theater Audio |
| Customer Reviews | 5.0 out of 5 stars 6 Reviews |

## Images

![2 x in, 3 x Out Digital Signal Processor Extension Board for DSP - Image 1](https://m.media-amazon.com/images/I/71eYnQvNR3L.jpg)
![2 x in, 3 x Out Digital Signal Processor Extension Board for DSP - Image 2](https://m.media-amazon.com/images/I/71FllyPjS-L.jpg)
![2 x in, 3 x Out Digital Signal Processor Extension Board for DSP - Image 3](https://m.media-amazon.com/images/I/71dcV2iRykL.jpg)
![2 x in, 3 x Out Digital Signal Processor Extension Board for DSP - Image 4](https://m.media-amazon.com/images/I/71xTkOe4f5L.jpg)
![2 x in, 3 x Out Digital Signal Processor Extension Board for DSP - Image 5](https://m.media-amazon.com/images/I/71r2axil9jL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just what I needed! 10/10!
*by A***R on October 7, 2025*

I got all three boards, the dsp, the programmer and the i/o board. I am just using this one to do the dsp for my home audio sub. But it ended up being so good, I think I'm about to buy several more. For designers or diy type guys, this couldn't be better. Works perfectly as I was hoping it would. Fully programmable for however you need it. Programming was difficult, I'm not going to lie. Every single dip switch had to be set to the opposite of what the instructions and ai said it should be. Once I figured that out with a bunch of trial and error, then it was pretty much as the instructions said. But it took me a minute to figure that out first. Hopefully this info saves someone else a couple of hours. I wish I'd caught it earlier. The Miumax program from Wondom works very well and has MOST every setting you'll need. It is considerably easier than SigmaStudios. If you can get what you need done with this, I’d recommend doing that. Learning SigmaStudios was not an easy step. But it does give you a lot more control. Those are your two options to program this and they both worked 100% correctly for me. Once you flash it to the ICP5 (it says icp5, but it also seems to write the dsp board in this step) you can disconnect the icp5 and run the dsp and I/O board without the icp5. I really hope this helps out and gives anyone considering this the confidence to grab the 3 boards and go for it. Worked beautifully for my first project using this. !0/10 WOULD RECOMMEND! Going to buy two more this week.

### ⭐⭐⭐⭐⭐ Very good price / quality ratio.
*by Z***U on July 7, 2019*

Product as described. Very good quality. Fast shipping.

## Frequently Bought Together

- 2 x in, 3 x Out Digital Signal Processor Extension Board for DSP
- 2 in 4 Out Audio Digital Signal Processor DSP Kernal Board - ADAU1701 Supports Adjusting Gain EQ Crossover and Time Alignment

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-28*