Dayton Audio SA70 70W Subwoofer Plate Amplifier

Brand:|Model: SA70
The Dayton Audio SA70 subwoofer amplifier offers exceptional performance and value, making it perfect for your next project. It works well as a replacement amplifier or as the key component in compact custom subwoofer speaker systems.
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List Price$99.99
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Part # 300-784
  • 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

Product Details

Dayton Audio SA70 70W Subwoofer Plate Amplifier

With 70 watts of clean power and a full feature set, the Dayton Audio SA70 amplifier offers exceptional performance and value. A Class-AB output stage and large power supply section give this amplifier great sound quality, and enough power to drive most compact subwoofers.

The SA70's auto-on circuit and sealed rear enclosure make the amp excellent for upgraded computer subwoofers, and also for driving individual tactile transducers. Don't let the modest price tag fool you—this is a workhorse amplifier that delivers just the right amount of power.

Specifications: • Power requirement: 120 VAC, 60 Hz, 110W • Measured power output: 45 watts RMS into 8 ohms @ 0.1% THD • 70 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 3-1/2" D • Enclosure cutout: 6-5/8" W x 7-3/4" H.

Dayton Audio SA70 70W Subwoofer Plate Amplifier
  • BrandDayton Audio
  • ModelSA70
  • Part Number300-784
  • UPC844632016387
  • Product CategorySubwoofer Plate Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (153 Reviews)
  • Weight7.5 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 SA70 70W Subwoofer Plate Amplifier
in the Subwoofer Plate Amplifiers product category.


Dayton Audio SA70 70W Subwoofer Plate Amplifier
Dayton Audio SA70 70W Subwoofer Plate Amplifier is rated 4.2418 out of 5 by 153.
Rated 5 out of 5 by from Nice ampI am using two of these to power 8 Aura bass shakers, each handling 4 with a 4 ohm load. More than enough power. The bass shakers are very efficient. Peaks at 15 to 20 w per amp delivers tremendous shake, adding incredible impact to a HT setup. No need for anything more.
Date published: 2015-09-28
Rated 5 out of 5 by from Good Clean PowerPurchased this amplifier along with two peerless 51/4 sub-woofer that were on clearance at PA, and was blown away by this amplifiers performance. This amp coupled with the dual 51/4 sub-woofer held its own against the bigger brother 12 inch sub-woofer I use in my living room. I am very impressed with this amp's performance.
Date published: 2015-05-22
Rated 5 out of 5 by from Great easy to installI got the speaker at a flea market and it never worked good. I was going to throw it away then went looking on the net for a replacement amp when I found this one Couldnot be any easier to install plug in the speaker wires screw the amp in place and you are good. Did have to trim the opening a bit but sounds great.
Date published: 2015-03-01
Rated 5 out of 5 by from Good for basic Home TheatreI bought this amp with a peerless 5.5" driver to hook up to my Pioneer mixer and needless to say the subwoofer plate amplifier does the job required.
Date published: 2015-01-04
Rated 5 out of 5 by from subwoofer amplifier plateSo good that I plan to buy others in the near. Future
Date published: 2014-12-23
Rated 5 out of 5 by from great ampgreat amp for the $$$$.. cut your hole for the amp, install it, & start playing. That easy
Date published: 2014-12-13
  • 2015-10-04T06:57CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_153
  • loc_en_US, sid_300-784, PRD, sort_mostRecent
  • clientName_PartsExpressInternational

Product Q&A

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Dayton Audio SA70 70W Subwoofer Plate Amplifier

I am building my own subwoofer and wanted to make it Bluetooth. How do I connect your Sure Electronics Bluetooth 4.0 Audio Receiver Board since the sub plate is sealed on the inside

Asked by: jeffkopp
The connections would have to be made outside the enclosure by wiring the RCA outputs of the Bluetooth board to the RCA inputs on the amplifier. Power for the board will also have to be an external 12VDC power supply.
Answered by: MattP
Date published: 2015-08-31

So i'm looking at powering two of the AuraSound AST-2B-4 Pro Bass Shaker Tactile Transducers with one of these amps at 4 ohms. Will this work? I saw a q&a on the shakers page that said otherwise. Thanks,

Asked by: joocyj
The problem with using this amp is that the two shakers will have to be wired in series, which means each shaker will only receive about 20 watts. An SPA250 or APA150 would be a better choice for a pair of shakers.
Answered by: MattP
Date published: 2015-08-31

I am building my own sub box or using an old sub. Question is if I use this sub plate do I need to make sure the sub I use is 70 Watts or less? Thanks Jeff

Asked by: jeffkopp
Not necessarily. As long as the woofer is 4 ohm and in an appropriate enclosure, the wattage rating does not have to match. Anything from 50-100 watts RMS will work with this amp.
Answered by: MattP
Date published: 2015-08-04

will this amp work in the united kingdom?

Asked by: rizzee84
This amplifier only accepts 120VAC input so a step down converter would be required for the UK.
Answered by: MattP
Date published: 2015-06-08

Will this amp drive two (2) 3ohm drivers in series?

Asked by: Rossd
Yes this will drive a 6 ohm load without a problem.
Answered by: MattP
Date published: 2015-05-15

Could the Dayton Audio SA70 70W Subwoofer Plate Amplifier be used to replace the plate amp on a Klipsch KSS-3 subwoofer?

Asked by: jeffu
We do not have a cross reference available for this type of thing. Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-04-22
  • 2015-10-04T07:33CST
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  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_50
  • loc_en_US, sid_300-784, PRD, sort_recentQuestionsFirst
  • clientName_PartsExpressInternational
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