Dayton Audio SA100 100W Subwoofer Plate Amplifier

Brand:| Model: SA100
This Dayton Audio SA100 100 watt subwoofer amplifier with adjustable crossover, high and low level inputs, auto on/off and phase reversal switch is perfect for building your own powered subwoofer. This plate amp offers very stable operation, with full overload protection.
A restocked/refurbished, or Open Box unit of the product is available -- see it now
  • Low distortion audiophile sound
  • Adjustable low pass crossover
  • High and low level inputs/outputs
  • Auto On/Off
  • Phase reversal switch
  • 75 watts RMS @ 8 ohms, 100 watts RMS @ 4 ohms
  • S/N Ratio: 90 dB (A-weighted)
Part # 
Weight: 8.55 lbs.  
List Price$149.99
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Part # 300-802
Qty:  EA
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Product Details

Dayton Audio SA100 100W Subwoofer Plate Amplifier

Small but mighty! The Dayton Audio SA100 high performance subwoofer plate amp module packs big-amp features into a compact chassis that is ideal for installation into cabinets that can't accommodate bulky old-style amps. We made it small, but included everything that you need to connect the amp to your system and get maximum performance. Input/output connections are through your choice of either line level RCA connectors, or speaker level banana jacks. A stereo input signal is summed to mono and sent to the internal low pass crossover, which is selectable from 40 to 180 Hz; the input gain sensitivity is fully adjustable as well.

The SA100 also includes a phase reverse switch, which helps you to achieve the best acoustical match with the rest of your speakers. An Auto On/Off switch keeps the amp standing by, waiting for an input signal to turn it on. A large surface area heat sink is combined with internal overload, thermal, and short circuit protection so that you can expect years of reliable operation.

Specifications: • Measured power output: 75 watts RMS into 8 ohms @ 0.1% THD, 100 watts RMS into 4 ohms @ 0.2% THD • Signal to noise ratio: 90 dB (A-weighted) • Dimensions: 7-1/2" W x 8-11/16" H x 4-3/4" D • Enclosure cutout: 6-1/2" W x 7-1/2" H • Power requirements: 120 VAC, 60 Hz, 180 watts • Net weight: 7.6 lbs.

Dayton Audio SA100 100W Subwoofer Plate Amplifier
  • BrandDayton Audio
  • ModelSA100
  • Part Number300-802
  • UPC844632015946
  • Product CategorySubwoofer Plate Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (121 Reviews)
  • Weight8.55 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Dayton Audio SA100 100W Subwoofer Plate Amplifier
in the Subwoofer Plate Amplifiers product category.


Dayton Audio SA100 100W Subwoofer Plate Amplifier
Dayton Audio SA100 100W Subwoofer Plate Amplifier is rated 4.5289 out of 5 by 121.
Rated 5 out of 5 by from More than good enoughI purchased a 15" Pyle subwoofer a few weeks ago that recommends 400w rms at 4 ohms and advertised 1000w. I have been tinkering with electronics for many years but no expert either. I know what is advertised these days is not what speakers can really handle. I put the sub in a ported box. I hooked up a 50w @ 4 ohms plate amp I had already and was enough to move things but not enough to consider playable under normal conditions. So, I ordered the 100w into 4 ohms amp from PE knowing I do not like to put too much watts to speakers even though I was advised to use more power. Yes I could have put more watts but sticking to a budget too. Hooked it up last night and at half gain I shook the house with Pitbull playing. I believe if I played at max I would have started shattering windows but that is not what the intentions are. I wanted to be able to listen to the newer style of music heavy on the bass and not worry about blowing out the speakers or the neighbors. If I had a super quality subwoofer that really needed 400 rms at 4 ohm the amp would not be sufficient power. However, for this application the PE amp did its job and
Date published: 2014-08-28
Rated 4 out of 5 by from Great Little AmpI purchased this for a small dorm room subwoofer project. I paired this with an 8" Dayton Audio driver in a ported enclosure. There is no audible noise, either through the sub or the main speakers that connect to the subwoofer outputs. The reason for 4 stars is that the line level outputs do not have a high pass filter. The frequency knob on the amp only adjusts the low pass filter going directly to the sub driver. But overall, a great product.
Date published: 2014-08-14
Rated 5 out of 5 by from Great quality and reliable!!I bought 2 of these SA100 plate amps back in 2003 and they have been great. They have out lived two of my other store bought powered subs. They do not hiss or hum annoyingly like some old or cheap subs and the AUTO on/off still works like the day I got them. Under normal use they run warm and under heavy use they do get a little hot but has never been a problem. Over all I would buy these again any day and have recommended them to many friends.
Date published: 2014-06-20
Rated 5 out of 5 by from great valueMy previous sub amp had a constant hum and no auto on/off. I replaced it with the SA100 and it works perfectly. Great sound, no hum and auto on/off. I am very satisfied
Date published: 2014-06-09
Rated 5 out of 5 by from Great amp!I bought this to replace my old Dayton 25w plate amp that I have had for over 10years and which now has been moved from den sub to bedroom re purposed passive Bose passive sub.. I am running the Dayton 100 at 4 ohms connected to my Polk C4 car sub which I use as my primary music sub (Sony ES receiver, den / stereo music room). The sounds is fantastic, very responsive, low low distortion, good build, stays cool under load and pounds overall. I would buy it again and again. Thanks Parts express!
Date published: 2014-03-14
Rated 5 out of 5 by from solid ampgood amp...reliable...good power...well made ......backed-up by PE
Date published: 2014-03-14

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Dayton Audio SA100 100W Subwoofer Plate Amplifier

Purchased the SA100 plate amp several months ago. Always left it in the 'ON' position. Now when I switch it to 'auto' it hums horribly. Does the same thing when in the 'Off' position. I have to leave the amp 'On' all the time or unplug it.

Asked by: Scottfox
Please contact our tech support for more help with this question, tech@parts-express.com or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-09-15

what would be the best subwoofer for this amp 2 8",2 6.5",1 10"(size and brand)i will be listening to music (rap-metal).Im building a system for my shop and would like good clean bass. also running off a car head unit that has front,rear and bass outputs.

Asked by: beanbo12
Please contact our tech support for more help with this question, tech@parts-express.com or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-09-03

Do the RCA pass-through's have a crossover on the output side? If so what is the crossover point/slope.

Asked by: RangeBishop
The RCA outputs are a simple pass through, there is no high pass in line.
Answered by: MattP
Date published: 2014-08-26

I'm considering this amp for a project that I have. The sub that I have is 4 ohms and rated at 150watts RMS. Will this amp power it or should I upgrade my wattage?

Asked by: keith9422
This will power a 4 ohm 150 watt load with no problem.
Answered by: MattP
Date published: 2014-08-11

I have a Polk Audio Atrium Sub 10 with dual 8ohm voice coils. Will this amp power that sub??

Asked by: Theseventhson
Yes this will work with that subwoofer, simply wire the coils in parallel for a 4 ohm load.
Answered by: MattP
Date published: 2014-08-11

Will this amp be enough to run 4 Aura AST-2B-4?

Asked by: ajamils
This can drive 4 Auras wired in series parallel, but I would recommend a little more power for that personally. I typically recommend at least 200 watts to drive 4 of them.
Answered by: Chrisf
Date published: 2014-08-06

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