---
product_id: 73859638
title: "SMP500"
brand: "osd audio"
price: "KSh243872"
currency: KES
in_stock: null
reviews_count: 13
category: "Osd Audio"
url: https://www.desertcart.co.ke/products/73859638-smp500
store_origin: KE
region: Kenya
---

# 800W peak power Class D tech runs cool Onboard DSP & adjustable crossover SMP500

**Brand:** osd audio
**Price:** KSh243872
**Availability:** ❌ Out of Stock

## Summary

> 🎵 Feel the Power, Own the Room with SMP500!

## Quick Answers

- **What is this?** SMP500 by osd audio
- **How much does it cost?** KSh243872 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/73859638-smp500)

## Best For

- osd audio enthusiasts

## Why This Product

- Trusted osd audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Efficiency:** Class D amplifier technology ensures cool operation even under heavy loads, maximizing reliability and lifespan.
- • **Power that Moves You:** Delivers up to 800W peak / 400W RMS for deep, room-shaking bass that commands attention.
- • **Seamless Integration:** Rack-mountable design with low/high level pass-through inputs/outputs and auto-sensing power on/off for effortless setup.
- • **Ultimate Convenience:** Includes remote control and protective volume limiter to safeguard your subwoofers while keeping control at your fingertips.
- • **Precision Bass Control:** Variable high-cut filter and front panel knob let you tailor bass response and seamlessly blend with main speakers.

## Overview

The OSD Audio SMP500 is a high-performance 800W peak mono-channel Class D subwoofer amplifier designed for 4-8 ohm passive subwoofers. Featuring onboard DSP, variable crossover controls, and auto-sensing power management, it delivers clean, deep bass with efficient cooling and flexible connectivity. Perfect for home theaters and media rooms, it combines professional-grade sound quality with user-friendly controls and a sleek rack-mountable design.

## Description

desertcart.com: OSD Audio 800W Mono-Channel Class D Subwoofer Amplifier – Onboard DSP, 4-8 Ohm – SMP500 : Electronics

Review: Excellent Quality at a Low Price - Received this OSD SMP-100 subwoofer amp on January 9th 2020, after looking at different models this one made the most sense. After hooking it up and doing my tests this amp was exactly what I needed to include in my whole house audio system. This sub amp works excellent wired into my receiver and my 4 zone 8 speaker selector switch for my ceiling speakers with a separate not passive but an 8 inch active subwoofer, if it is wired and set up correctly this little amp @ 80RMS 100watts of power into 4 ohms can deliver enough power to shake my whole house at quarter of the volume from watching a movie or playing music it’s very clean sound with no hum feedback, it has a phase control to adjust for sub placement, a crossover control so you can adjust and set the low pass to your desire level and an overall volume control to set the desire volume, it will automatically switch off after 15 minutes if no audio signal is detected so no need for you to switch on and off manually. My recommendation is not to use speakers that are more than 8 inch 4 to 8 ohms as stated in the manual. Following a correct set up this little amp will deliver a clean solid deep bass without being out of phase with your system. This sub amp can also be used for powering an in-wall passive subwoofer like the OSD IWS 8 series which I will be doing later.
Review: So far… - So good! Had to set the auto-off to 30 minutes. Frustrating when it turned off every 5 minutes…

## Features

- The SMP500 is designed for use with higher wattage passive subwoofers that require external power with up to 800 watts power peak / 400 watts RMS with 4 ohms. It has highly efficient Class D technology to run cool under demanding loads.
- SOUND QUALITY: Get a deep, crisp, clean low-frequency sound effect in dedicated home theater systems and media rooms to improve the overall sound quality of surround sound systems with dual 100/220 voltage.
- BASS: This amplifier improves bass response of passive subs with a variable high-cut filter and a front panel control knob that routes higher frequencies to main speakers for low frequency sound effects.
- CONTROL FEATURES: The SMP500 includes front-mounted power and back panel adjustable gain. A volume control limiter protects the woofers while low and high level pass-through inputs/outputs for greater flexibility.
- DESIGN: Rack mountable, the SMP500 supplies in-wall or stand-alone subwoofers with the power they need. CE & ETL rated with an auto sensing feature that automatically turns the amp on or off when a signal is detected. A remote control is included.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07F94FSLF |
| Best Sellers Rank | #102,025 in Electronics ( See Top 100 in Electronics ) #678 in Audio Component Amplifiers |
| Brand | OSD Audio |
| Customer Reviews | 3.9 3.9 out of 5 stars (200) |
| Date First Available | July 5, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8 pounds |
| Item dimensions L x W x H | 15 x 5 x 6 inches |
| Item model number | SMP500DSP |
| Manufacturer | OSD Audio |
| Maximum Supply Voltage | 220 Volts |
| Mounting Type | Surface Mount |
| Number of Channels | 1 |
| Output Power | 400 Watts |
| Package Type Name | cardboard box |
| Product Dimensions | 15 x 5 x 6 inches |
| Specification Met | Etl Rated |
| UPC | 819603013177 |
| Voltage | 220 Volts |

## Product Details

- **Item dimensions L x W x H:** 15 x 5 x 6 inches
- **Manufacturer:** OSD Audio
- **Maximum Supply Voltage:** 220 Volts
- **Mounting Type:** Surface Mount
- **Voltage:** 220 Volts

## Images

![SMP500 - Image 1](https://m.media-amazon.com/images/I/51VHJ8bGwbL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: how much power rms at 8 ohms?**
A: The manual mine came with "the 1000 Watt version" -- details it at providing 497 watts RMS at 8 ohms.

**Q: Anyone have an issue with the speaker out port not working?**
A: First off , do you have a audio signal out from the receiver/ amp to the input of subwoofer? Please check wiring diagram of the manual it should work.

**Q: Does the SMP100 require a 12v trigger cable to work properly?**
A: The SMP100 includes auto sensing that turns on the amp when an audio signal is detected then turns off automatically after 15 minutes when a signal is not detected, but it also has the manual on/off switch.

**Q: Will this work with a polk s35 center channel speaker?**
A: Yes. But this amp would be overkill. Simply get an a/v receiver instead.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Quality at a Low Price
*by R***L on January 14, 2020*

Received this OSD SMP-100 subwoofer amp on January 9th 2020, after looking at different models this one made the most sense. After hooking it up and doing my tests this amp was exactly what I needed to include in my whole house audio system. This sub amp works excellent wired into my receiver and my 4 zone 8 speaker selector switch for my ceiling speakers with a separate not passive but an 8 inch active subwoofer, if it is wired and set up correctly this little amp @ 80RMS 100watts of power into 4 ohms can deliver enough power to shake my whole house at quarter of the volume from watching a movie or playing music it’s very clean sound with no hum feedback, it has a phase control to adjust for sub placement, a crossover control so you can adjust and set the low pass to your desire level and an overall volume control to set the desire volume, it will automatically switch off after 15 minutes if no audio signal is detected so no need for you to switch on and off manually. My recommendation is not to use speakers that are more than 8 inch 4 to 8 ohms as stated in the manual. Following a correct set up this little amp will deliver a clean solid deep bass without being out of phase with your system. This sub amp can also be used for powering an in-wall passive subwoofer like the OSD IWS 8 series which I will be doing later.

### ⭐⭐⭐⭐⭐ So far…
*by M***L on May 1, 2024*

So good! Had to set the auto-off to 30 minutes. Frustrating when it turned off every 5 minutes…

### ⭐⭐⭐ Good Enough Amp for 70v Commercial.
*by I***N on July 21, 2022*

Bought this to install in a Friends Bar / Lounge. This was my First time dealing with 70V System, I have to say its pretty Dang Good for Hanging Subwoofers Amp. Only wish it had more power for the price.

## Frequently Bought Together

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---

*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-03-05*