---
product_id: 1168377
title: "SPA250 250 Watt Subwoofer Plate Amplifier"
brand: "dayton audio"
price: "€ 491.97"
currency: EUR
in_stock: true
reviews_count: 13
category: "Dayton Audio"
url: https://www.desertcart.be/products/1168377-spa250-250-watt-subwoofer-plate-amplifier
store_origin: BE
region: Belgium
---

# Class AB output stage 250W peak power output Variable gain & crossover controls SPA250 250 Watt Subwoofer Plate Amplifier

**Brand:** dayton audio
**Price:** € 491.97
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your bass game with precision power and perfect fit!

## Quick Answers

- **What is this?** SPA250 250 Watt Subwoofer Plate Amplifier by dayton audio
- **How much does it cost?** € 491.97 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/1168377-spa250-250-watt-subwoofer-plate-amplifier)

## Best For

- dayton audio enthusiasts

## Why This Product

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

## Key Features

- • **Plug-and-Play Upgrade:** Exact drop-in replacement size for popular subs like KLH ASW10, making installation a breeze.
- • **Power that Packs a Punch:** Delivers up to 252 watts RMS for deep, room-filling bass that commands attention.
- • **Built to Last and Perform:** Robust Class AB amplifier with a large heat sink for reliable, distortion-free bass performance.
- • **Tailored Sound Integration:** Adjustable gain, crossover, and phase controls ensure your subwoofer perfectly matches your space.
- • **Seamless System Compatibility:** Low-level, high-level, and LFE inputs plus manual, auto, or triggered on/off modes fit any setup effortlessly.

## Overview

The Dayton Audio SPA250 is a 250-watt Class AB subwoofer plate amplifier designed for powerful, distortion-free bass. Featuring switchable bass boost, versatile input options, and customizable controls, it integrates seamlessly into any audio system. Its exact drop-in dimensions make it an ideal upgrade or replacement for legacy subwoofers like the KLH ASW10, combining convenience with superior sound performance.

## Description

Buy Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier: AV Receivers & Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Perfect, improved, drop-in replacement for my old KLH ASW10 home theater sub. Very happy with it. - I had an older KLH ASW10 sub that failed after 7 years and sat around for another 7 years. When I finally got around to it I considered four options: 1) reparing the plate amp, 2) switching to an external Fosi amp, 3) junking it and buying a new one, and 4) replacing the plate amp. Even though this a $200 fix to a sub with a $150 replacement cost, I went with the last option because this plate amp from Dayton is a perfect drop-in replacement - right down to the size, type, position, and number of screws. I found no other plate amp anywhere with the exact dimensions I needed for the ASW10. (It's almost as if Dayton built this specifically for the ASW10.) Truly, all I had to do was take out the screws, connect the new amp to the speaker, and replace the screws. This was well worth the extra $50 in convenience alone. The sub sounds great, has better speaker connections, more power (250w vs 120w), and a bigger heat sink. I can run the amp at 25% gain and still get good volume. Everything about it works and my old KLH sounds better than ever. Working sub; less landfill.
Review: Good replacement for B&W Sub. - Good replace for my B&W sub. The holes lineup but needed to be drilled out a little bigger. Sounds good.

## Features

- Switchable 6 dB @ 35 Hz bass boost Measured power output: 156 watts RMS into 8 ohms @ 0.1% THD, 252 watts RMS into 4 ohms @ < 1.0% THD
- Mono Class AB output stage for solid, well defined output
- Low-level, high-level, and LFE inputs connect to any system
- Manual, auto, or triggered on/off modes for compatibility with any automated system
- Variable gain, crossover point and switchable phase controls optimize room integration

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0070Z81MW |
| Best Sellers Rank | #80,711 in Electronics ( See Top 100 in Electronics ) #201 in Audio/Video Receivers & Amplifiers |
| Brand | Dayton Audio |
| Brand Name | Dayton Audio |
| Customer Reviews | 4.2 out of 5 stars 240 Reviews |
| Global Trade Identification Number | 00844632094897 |
| Included Components | Subwoofer plate amplifier, power cord, user manual |
| Item Dimensions | 5.12 x 9.84 x 9.84 inches |
| Item dimensions L x W x H | 5.12 x 9.84 x 9.84 inches |
| Manufacturer | Dayton Audio |
| Maximum Output Power | 252 watts |
| Model | SPA250 |
| Mounting Type | Tabletop Mount |
| Number of Channels | 1 |
| Number of Items | 1 |
| Output Power | 250 watts |
| Part Number | 300-803 |
| UPC | 844632094897 |
| Unit Count | 1 Count |
| Voltage | 120 volts_of_alternating_current |

## Product Details

- **Brand:** Dayton Audio
- **Item dimensions L x W x H:** 5.12 x 9.84 x 9.84 inches
- **Manufacturer:** Dayton Audio
- **Mounting Type:** Tabletop Mount
- **Voltage:** 120 volts_of_alternating_current

## Images

![SPA250 250 Watt Subwoofer Plate Amplifier - Image 1](https://m.media-amazon.com/images/I/81IAj7sCb9L.jpg)
![SPA250 250 Watt Subwoofer Plate Amplifier - Image 2](https://m.media-amazon.com/images/I/816ZgTEXVwL.jpg)
![SPA250 250 Watt Subwoofer Plate Amplifier - Image 3](https://m.media-amazon.com/images/I/71scU6xSJ2L.jpg)
![SPA250 250 Watt Subwoofer Plate Amplifier - Image 4](https://m.media-amazon.com/images/I/71jaeqP2r0L.jpg)
![SPA250 250 Watt Subwoofer Plate Amplifier - Image 5](https://m.media-amazon.com/images/I/71h+D8pFheL.jpg)

## Questions & Answers

**Q: What are the dimensions, trying to replace amp on a klipsch rpw10**
A: The specs are on the Dayton Audio website.  The SPA-250 page is here:http://www.daytonaudio.com/index.php/spa250-250-watt-subwoofer-amplifier.htmlOverall dimensions are listed in the spec table near the bottom of the page.  Cutout dimensions are in the last paragraph of the text portion of that page.  The cutout dimensions should be 8.5" x 8.5".  Be aware that the amplifier unit is 5" deep, and may require trimming of the internal baffles of a subwoofer cabinet.

**Q: Is this amp stable down to 2 ohms?**
A: probably not

**Q: Can I power a driver in the front and shakers from the back using the high level outputs at the same time? The bass shakers are two ohm buttkicker min**
A: The outputs are a by-pass of the inputs. The idea of this amp is to send full frequency audio (20 -20kHz) in and full audio out. The plate amp strips off low frequencies (below 200 Hz) for a subwoofer or shakers. So assuming full spectrum audio in, you would not want shakers on the high outputs. If you did this, the shakers would be shaking most of the time which would be very annoying. As far as impedance, you must normally keep the load between 4 and 8 ohms. (This depends on the amplifier’s design.) So if you have 2 ohm shakers, you would connect 2 in series to get 4 ohms. (Ohms law).

**Q: Low frequency ranges. Will it do 32hz**
A: It should do 32Hz quite well. With a test cd, mine had no problem at 16Hz although the subwoofer was moving air but difficult to hear.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect, improved, drop-in replacement for my old KLH ASW10 home theater sub. Very happy with it.
*by L***T on August 1, 2026*

I had an older KLH ASW10 sub that failed after 7 years and sat around for another 7 years. When I finally got around to it I considered four options: 1) reparing the plate amp, 2) switching to an external Fosi amp, 3) junking it and buying a new one, and 4) replacing the plate amp. Even though this a $200 fix to a sub with a $150 replacement cost, I went with the last option because this plate amp from Dayton is a perfect drop-in replacement - right down to the size, type, position, and number of screws. I found no other plate amp anywhere with the exact dimensions I needed for the ASW10. (It's almost as if Dayton built this specifically for the ASW10.) Truly, all I had to do was take out the screws, connect the new amp to the speaker, and replace the screws. This was well worth the extra $50 in convenience alone. The sub sounds great, has better speaker connections, more power (250w vs 120w), and a bigger heat sink. I can run the amp at 25% gain and still get good volume. Everything about it works and my old KLH sounds better than ever. Working sub; less landfill.

### ⭐⭐⭐⭐⭐ Good replacement for B&W Sub.
*by D***R on March 24, 2026*

Good replace for my B&W sub. The holes lineup but needed to be drilled out a little bigger. Sounds good.

### ⭐⭐⭐⭐⭐ Excellent Dayton Audio SPA250 - 250 Watt Subwoofer Amp. Excellent Calue !
*by J***B on June 14, 2016*

Awesome Crisp Clean Power: Dayton Audio SPA 250 - 250 Watt Subwoofer Amp. This unit is used in-line with my REAR ... Speakers 'B' Speaker Wires. Very Simple Set-Up: Speakers L/R Input and Output ... and a Dedicated Single Pair of Speaker Wires [16"] for the Subwoofer Speaker. I am using a Pyle PDIWS28 - Dual 8" In-Wall unit which can Peak at 600-watts ... and Continuous usage @ 300-watts. The SPA250 has GAIN / Frequency Response / and Phase switches - adjustments. The 'Auto on/off switch is left on at all times ... shuts the unit down when power from the Amp is turned off. Very useful feature. A Bass Boost Switch on top --- Selects a bass boost filter with +6dB @ 35Hz. It Allows the user to add boost to the low end response. Nice feature. This unit is designed to fit within a Subwoofer cabinet / enclosure. Mine is built into a Custom Rear [back of family room] Enclosure with L / R Rear Speakers. The Bass resonating from the power of this amp nicely Compliments / Enhances the Front / Main [Bose] Subwoofer. The entire room is literally filled with Music. Front Speakers are positioned lower to the floor ... rear speakers are closer to the ceiling ... total coverage at all volume levels. I chose this unit because my Receiver does not have a Rear or Second Subwoofer connection. This is truly an Awesome Amp ... Simple and Efficient ! Worth the Money -- Excellent Value !

## Frequently Bought Together

- Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier
- FosPower Y Adapter (8 inch) 2 RCA (Male) to 1 RCA (Female) Stereo Audio Y Adapter Subwoofer Cable (24k Gold Plated) 2 Male to 1 Female Y Splitter Connectors Extension Cord

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-08-22*