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.
  • 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
You Save37%
Your Price
Buy 4-up$89.80
Part # 300-802
Qty:  EA
Available Payment Methods

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, 210 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
    (135 Reviews)
  • Weight8.55 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain 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 4.5111 out of 5 by 135.
Rated 4 out of 5 by from Great product!I bought Dayton Audio SA100 to replace my dead PSB 5i. I am pleasantly surprised by great sound power and quality. Installation was easy and smooth. There are minor drawbacks:1) Speaker connectors were different sises and I have to replace them.2) There is loud click first time you power it.
Date published: 2015-04-27
Rated 5 out of 5 by from A Lot for the MoneyDon't let the power rating turn you off. The Dayton SA100 subwoofer amp is a serious performer. In the pictured build which I did (a downfiring subwoofer build) this combination produces very deep bass. It can get quite loud in my room, but my goal is deep accurate bass at normal listening levels.
Date published: 2015-04-14
Rated 5 out of 5 by from Perfect fit for my KLH subwooferRather than replacing my KLH subwoofer, I replaced my burnt out Plate Amplifier for this one. It fit perfectly down to the screw holes. So is it made by the same company who supplied the original one, who knows? All I know is that it saved me over $100 to buy another subwoofer.
Date published: 2015-03-15
Rated 1 out of 5 by from poor reliabilityThis is my third amp in three years, within warranty once, repaired and failed. Auto on feature burns out over and over. I hope this newer design is a better experience. Great when it powers up. I don't feel like building a new enclosure to fit a different amp at this point.
Date published: 2015-03-09
Rated 4 out of 5 by from Good Replacement AmpBought this to replace a bad amp in my Athena AS-P400. The Athena was rated at 100W RMS / 400W Peak, so this being 100W RMS at 4ohms seemed like a good match. It works reasonably well with a few quirks:First it seems a bit less powerful than the Athena was. At high volumes there is a bit of distortion. Second, on the Athena I was able to attach a single low-level input to make it work. For this amp you must connect two low-level inputs to get it to operate at full power. Lastly, the variable frequency cutoff is not as clean as I'd like it to be. I feel like I have to turn it to a lower frequency than I should in order to get the cutoff I desire, then turn the gain up to compensate for it.Once I got it adjusted, it is suiting my daily needs and was a good purchase for the price. It definitely beat paying $400+ for a new subwoofer, but I don't think I'd recommend it for hardcore audiophiles.
Date published: 2015-03-05
Rated 5 out of 5 by from The unit has excellent Freq Control and Power.I have only owned the unit for a few weeks thus far. The unit has excellent Freq Control bringing the sub-lows out and up to being able to here the whole Bass Guitar if that is what you personally enjoy. The Gain control works well also. I mounted my unit separately in a 2-sided tilted box and it sets on top of the speaker box. This makes it easy to adjust the amp when you change sources of music. It also allows it to breathe and cool easily. I replace a poorly designed JBL PS-12 amp with this unit, covering the hole left with 5/8 Plywood with a Rubber-Gasket. The new unit sounds much improved over the JBL. For the cheap price it appears to be a good value decision thus far.
Date published: 2015-03-01
  • 2015-05-21T09:20CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.3
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_135
  • loc_en_US, sid_300-802, PRD, sort_mostRecent
  • clientName_PartsExpressInternational

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

I am in the UK and will probably purchase this amp in conjunction with 2 aura sh shakers.  I am concerned about mains voltage.  Will this amp operate at 230v? If not is there a 230v alternative or should I be looking at a 120v step down transformer?

Asked by: arknox
This particular amp requires a step down transformer in order to work on 230V. Our Yung SD100 or SD200 models have switchable input voltages so those might be another option for you.
Answered by: MattP
Date published: 2015-05-20

I have 6 ohm speakers. Can i use those with this amp?

Asked by: awesomeness
Yes. This amp is stable down to 4 ohms.
Answered by: TomI
Date published: 2015-04-22

I have two 12" Memphis audio SR subs in a cabinet with a SR1.250 attached. I want to use this sub in my barn but I don't know how. Lots of different opinions. I think I need a plug in amp, and a receiver. Please help. Tell me what to buy. Thank u

Asked by: Shades017
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: 2015-04-21

Can only a single channel of this amp be hooked up through the speaker-level inputs? I'd like to run stereo subs using the high level inputs and outputs. Could I use one amp for the left channel and one for the right?

Asked by: Brkitup4ever
Yes, that is a very popular connection for this amplifier.
Answered by: Chrisf
Date published: 2015-04-03

Would this amp be a decent fit for 2 ADX Maximus shakers in series? Or should i be looking at a bigger amp?

Asked by: ambienthtc
Two of those transducers in series will only receive about 25 watts from this amplifier. I would recommend our Dayton APA150 or SPA250 for a pair of these.
Answered by: MattP
Date published: 2015-02-23

I have a 1986 vintage Miller & Kreisel V3B subwoofer that has a blown amp. The current amp has a plug from the speaker to the amp (6 wires ??). Do you include wiring instructions from the speaker to the amp? I'm not familiar w/"speaker driver" wiring.

Asked by: lee5106
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: 2015-02-18
  • 2015-05-21T09:39CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.3
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_86
  • loc_en_US, sid_300-802, PRD, sort_recentQuestionsFirst
  • clientName_PartsExpressInternational

Customer Projects

Customer projects that include: Dayton Audio SA100 100W Subwoofer Plate Amplifier

If you built a project using this product, post it in the Parts Express Project Gallery.

Customer Discussions

If you would like to start a discussion about this product, post a thread in the TechTalk Customer Forum.
Get Deals
emailed to you every week.

Be the first to hear about new and exciting products,special pricing and incredible deals!

See This Week's "GET DEALS" Email
Parts Express
725 Pleasant Valley Dr.Springboro,OH 45066USA

© 1996-2015 Parts Express, All Rights Reserved

Live Chat Software