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The Best Plate Amp

What is the best Plate Amp to choose from in 2021?

Looking for a new Plate Amp but don’t know how to choose the best one that suits your needs? In this article, we will introduce some of the best Plate Amps available on the market.

For some who do not know about Plate Amp yet, it is a type of power amplifier usually put inside an audio speaker. It is built on a plate face or a flat surface with many components on it. It is mostly used for subwoofers to amplify their power using line signals. The reason is that Plate Amp has a lower frequency response compared to other kinds of amplifiers, at around 200 hertz only, and it will be more beneficial to use on subwoofers rather than other types of speakers. To drive such a kind of speaker, Plate Amp usually has a high power specification, from 80 to 500 watts. The power level and the types of components, output, or input on the Plate Amp’s board are commonly the differences among various products that you can find on the market. Therefore, to give you some insights on this and help you decide which one to choose more easily, we will go through 4 of the best items today.

The Best Plate Amp of June 2021 – Reviews and Top Rated

Rank No. #1
Sound Town Class-D Plate Amplifier for PA DJ Subwoofer Cabinets, w/Speaker Outputs, LPF (STPA21-710)
  • 500W RMS plate power amplifier
  • Two speaker outputs with 125W RMS output each channel
  • 2 XLR-1/4” combo inputs, 2 XLR (through) outputs
  • Over current and short circuit protection
  • Sturdy and reliable
Rank No. #2
Seismic Audio - SA-APP008-120 Watt Class AB Plate Amplifier for Full Range Loudspeaker Cabinets - Class AB Replacement Amplifier
  • Model: SA-APP008
  • Contents: 60 Watt Plate Amplifier for Loudspeakers
  • Amplifier Type: Class AB
  • Power Rating: LF: 60 Watts RMS; 120 Watts Peak
  • Controls: Treble, Bass, & Master Volume
Rank No. #3
Dayton Audio SPA1000 1000W Subwoofer Plate Amplifier
  • High power Class-AB output stage for clean, controlled output
  • Patented tracking downconverter power supply for high efficiency
  • Toroidal power supply transformer
  • Low frequency parametric EQ allows you to boost or cut for custom-tailored sound
  • Advanced soft clip circuitry improves headroom and protects woofers
Rank No. #4
DC 18-32V 150W Subwoofer Amplifier Board Support Bass Output Digital Small Power Amp Plate Video Audio Accessories
  • Work efficiency: 90%
  • Rated output power: 150W*1
  • Working voltage: DC18V to DC32V
  • The resistor uses 1206 0805 high-precision chip resistor to ensure a good signal-to-noise ratio of the whole machine.
  • Small size, high power, no noise, the circuit design is very reasonable, without any low noise!
Rank No. #5
Seismic Audio - SA-APLW80-120 Watt Class AB Plate Amplifier for PA/DJ Loudspeaker Cabinets - Class AB Replacement Amplifier
  • Model: SA-APLW80
  • Contents: 60 Watt Plate Amplifier for Loudspeakers
  • Amplifier Type: Class AB
  • Power Rating: 60 Watts RMS; 120 Watts Peak
  • Controls: Treble, Bass, & Master Volume
Rank No. #6
Round Metal Speaker Jack Plate For Amplifier Cabinets 1/4 inch Black Finish 2 inch Diameter
  • Jackplate for speaker cabs - Retail Packaged
  • 2" outside diameter
  • For 1/4" US spec or 6.3mm Metric jacks
  • Requires a 1-1/16" to 1-1/4" mounting hole
  • black finish - sturdy metal
Rank No. #7
3 Pack Round Metal Speaker Jack Plates For Amplifier Cabinets 1/4 inch Black Finish 2 inch Diameter
  • 3 Pack Metal Jackplates for speaker cabs - Retail Packaged
  • 2" outside diameter
  • For 1/4" US spec or 6.3mm Metric jacks
  • Requires a 1-1/16" to 1-1/4" mounting hole
  • black finish - sturdy metal
Rank No. #8
Seismic Audio - SA-APMT51-250 Watt Plate Amplifier with 3 Band EQ for PA/DJ Full Range Speaker Cabinets - 4 Ohm PA/DJ Speaker Replacement Amp
  • Model: SA-APMT51 | Class AB Plate Amplifier for Loudspeakers
  • Power Rating: 250 Watts RMS; 500 Watts Peak | | Minimum Ohm Load: 4 Ohms | Features: 3 Band Equalizer - Treble, Mid, Bass
  • Controls: Treble, Mid, Bass, Gain and Volume Controls | Mic/Line Switch
  • | Line Input: XLR, 1/4 Inch, and 1/8 Inch (3.5mm) | Line Output: XLR
  • Protection: Overheating. Overload, Over Current, Short Circuit Protection| Voltage Changeover Switch: 115V/230V
Rank No. #9
Seismic Audio - SA-APX008-100 Watt 4 Ohm Class AB Plate Amplifier for Full Range Loudspeaker Cabinets - 4 Ohm PA/DJ Speaker Replacement Amp
  • Model: SA-APX008 | Class AB 100 Watt Plate Amplifier for Loudspeakers
  • Power Rating: 100 Watts RMS; 200 Watts Peak | | Minimum Ohm Load: 4 Ohms | Features: 3 Band Equalizer - Treble, Mid, Bass
  • Controls: Treble, Bass, & Master Volume | Mic/Line Switch | Switch for Boost/Flat/Cut | Line Input: XLR, 1/4 Inch, and 1/8 Inch (3.5mm) | Line Output: XLR
  • Protection: Overload Protection, Over Current Protection, Short Circuit Protection | Voltage Changeover Switch: 115V/230V
  • Dimensions: Front Panel: 11" x 2.5" x 2.75" | Back Panel: 11.5" x 4.75" x 4.75"
Rank No. #10
Dayton Audio SA70 70W Subwoofer Plate Amplifier
  • Line-level and speaker-level inputs for connection to any system
  • Auto-on circuit comes on the instant the amp is needed
  • Variable 2nd order low-pass crossover from 40 Hz - 180 Hz
  • Proven performer at a low price point

Last update on 2021-06-22 / Affiliate links / Images from Amazon Product Advertising API

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Dayton Audio SPA250 250 Watt Subwoofer Plate Amplifier

The first Plate Amp that we will introduce today is the SPA250 250W Plate Amplifier from Dayton Audio. It is the most powerful Plate Amp from this manufacturer. It has a changeable 6dB, 35Hz bass buff. There are two power outputs: with 8 ohms at 0.1% THD, the power rating is 156W, 252W with 4 ohms at lower than 1% THD. The output is made strong and clear with the mono-class AB output stage. There are three inputs: low level, high level, and LFE so that the product can be compatible with any connection. This Plate Amp can also support any automatic sound system with the auto power switch on/off modes. The product may look a little big in the picture. Still, it can be optimized for space easily with variable gain, traverse spots, and changeable phase controls, so don’t worry about adjusting the components much when installing this amplifier. The audio performance is designed to suit the home theatre system best. Therefore, if you have a home theatre or are just into building audio speakers, this is a perfect choice.

Pros:

  • A powerful amplifier that suits home theatre subwoofer
  • Easy to install and use

Cons:

  • None

Dayton Audio SA100 100W Subwoofer Plate Amplifier

If you are not into the 250W Plate Amp, or don’t need that much power, consider the SA100 100W Plate Amplifier from Dayton Audio. This product can offer you 75W of power when using 8 ohms, or 100W with just 4 ohms. It can provide a low distortion sound when operating and, according to Dayton, “audiophile” as well. It somewhat says that the manufacturer has high confidence in the audio quality that this amplifier will put out, which will satisfy any music lovers. Like the 250W model, the SA100 also possesses high and low-level inputs and outputs and an auto power switch to adapt with any automatic system. With this amplifier, you can recover a subwoofer with a dead amp (which will cost a lot less compared to having to buy a whole new one) and turn a passive subwoofer into an active one. This product works best with speakers with 4 ohms or 8 ohms, so keep this in mind before purchasing.

Pros:

  • Can offer the best experience for music lovers with high quality and low distortion sound
  • Many types of inputs and outputs with auto powering feature to fit any audio systems

Cons:

  • None

Dayton Audio 70W Plate Amp

Another option from Dayton Audio, if the two above did not suit your demands, is the SA70 70W Plate Amplifier. The product can perform between 40Hz and 180Hz, thanks to the low-pass crossover. The Plate Amp is built with line level and speaker level inputs to be compatible with any audio structure. There is also auto power on the circuit so that whenever you need this amplifier, it will be powered on. It will enhance your subwoofer’s audio quality by a lot, which will be suitable for the home theatre experience. The product can also be used as a replacement for failed amplifiers. Some users described this process as “give the speakers a second life,” which is quite interesting to hear. Some customers also report that this amplifier heats a lot when operating. Don’t worry, as this is normal, and all speaker amplifiers give off heat, as there is an electric current running through this part of the speakers. However, if it gets too hot, you should consider moving your speaker to somewhere cooler since the environment could also affect the amplifier’s temperature.

Pros:

  • Compatible with many audio systems
  • Auto-on circuit for convenient use

Cons:

  • None

Seismic Audio – SA-APSM01 Plate Amplifier

The final product for today is the SA-APSM01 Plate Amplifier from Seismic Audio. It is a class AB speaker amplifier made for professional audio systems and DJ. It has the highest power rating of all the Plate Amp that we are introducing today: 250W to 500W for LF and 75W to 150W for HF with the Bi-Amp structure. This Plate Amp will enable its users to control the treble and bass volume with a two-band equalizer. The line inputs include XLR, ¼ Combo Jack, and TRS. There is also a Mic/line switch to serve the music producers better. With such a powerful amp, the manufacturer carefully equipped it with a safe use system, including a DC fan for heat-dissipating, anti overload, and overcurrent system, anti-short circuit system. The sound it creates will be loud and clean. So if you want to pass all the household speaker amplifiers and look for a product made for professionals, this will be the right choice. There is also a one-year warranty from Seismic Audio when purchasing this product.

Pros:

  • Made for professional uses: high-quality sound, various inputs with Mic/line switch
  • Safe for use with anti risks built-in
  • Powerful ratings

Cons:

  • None

That is all of our introduction on Plate Amp for today. We hope that you can find the best one that suits your demands after this article, as this is an economical choice for your speakers with a failure amp. Thank you for reading!

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Fabian Walker

Data Scientist, Lab Researcher, Founder of RelinkLabs.com