Clearance Item

Dayton Audio DTA-100a Class-T Digital Mini Amplifier 50 WPC

Brand:| Model: DTA-100a
Product Video
The Dayton Audio DTA-100a provides 50 watts of pristine Class-T digital power per channel, a built-in headphone amplifier, and two stereo inputs to connect all your portable and permanent audio devices.
  • Automatic switching 3.5 mm input jack allows you to select audio sources quickly
  • Provides superb, audiophile-quality sound—less than 0.01% THD @ 30 watts
  • 1/4" headphone jack for private listening
  • Compact extruded aluminum housing with thick black anodized faceplate
  • Short circuit, thermal, and overload protection ensures worry-free operation
  • World compatible 24 VDC switch mode power supply included for a variety of power options
Part # 
Weight: 2.75 lbs.  
This Product Is No Longer Available
Comparable Items In Stock:
Available Payment Methods

Product Details

Dayton Audio DTA-100a Class-T Digital Mini Amplifier 50 WPC

Clean-sounding, efficient, and versatile, Dayton Audio's DTA-100a packs audiophile-grade sonic performance into a package just slightly larger than pocket-sized! The DTA-100a utilizes the Tripath TK2050, a high-performance chipset that delivers 50 watts of continuous power per channel (100W total) into an 8 ohm load. The Dayton Audio DTA-100a's Class-T mini amplifier circuitry offers the audio fidelity of a Class-AB amplifier while providing the > 85% power efficiency of a Class-D design. This compact powerhouse also features a convenient front-mounted 3.5 mm stereo input for quick connection of iPods, MP3 players, and other portable audio devices. A rear-mounted RCA-type line level input is also provided for permanent connection of larger devices such as CD players.

Speaker output connections are high-current banana plug receptacles spaced on 3/4" centers and compatible with standard double banana plugs (sold separately). High quality screw-on banana plugs that will accept 10 to 18 AWG wire are included. The DTA-100a also doubles as a high fidelity headphone amplifier that will drive any headphone easily, and delivers colossal sound stage from 20-20,000 Hz with a signal-to-noise ratio of 103 dB (A-weighted). The 1/4" stereo jack simplifies connection of larger home and studio style headphones. An adapter is also provided so smaller 3.5 mm personal-style headphones can be used. The amplifier comes complete with a world compatible power supply and its associated connectors.

Dimensions: • Faceplate dimensions: 1-29/32" H x 3-3/8" W x 5/16" D • Body dimensions: 1-3/4" H x 3-1/8" W x 4-5/8" D • Overall dimensions: 2-1/8" H x 3-3/8" W x 5-1/2" D (feet, faceplate, and volume knob included).

Note: Do not use with speakers that are lower than 8 ohms nominal impedance. This amplifier is not bridgeable.

Product Specifications
  • Power Output (RMS Per Channel @ 8 ohms)50 Watts
  • Power (RMS/Channel 8 ohms)26 - 50 Watts
  • Special FeaturesClass T
  • Weight Range< 10 lbs.
Dayton Audio DTA-100a Class-T Digital Mini Amplifier 50 WPC
  • BrandDayton Audio
  • ModelDTA-100a
  • Part Number300-383
  • UPC844632084959
  • Product CategoryAmplifiers
  • Unit of MeasureEA
  • Product Rating
    (190 Reviews)
  • Weight2.75 lbs.
  • Case Qty10
  • 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 DTA-100a Class-T Digital Mini Amplifier 50 WPC
in the Amplifiers product category.


Dayton Audio DTA-100a Class-T Digital Mini Amplifier 50 WPC
Dayton Audio DTA-100a Class-T Digital Mini Amplifier 50 WPC is rated 4.3684 out of 5 by 190.
Rated 1 out of 5 by from Left channel stay on when turned all the way downLeft channel stays on when turned all the way down.Left channel imbalance. Left side louder than right.Probably good with better pot.(potentiometer)Will return, maybe go with Topping.
Date published: 2014-02-24
Rated 5 out of 5 by from Nice little ampI bought this on a whim, but now I think I am going to use it to replace the DynacoStereo 70 at our cabin. Great sound, plenty of power, comes with a power supply.
Date published: 2014-03-07
Rated 5 out of 5 by from Thank you for good product!This amp is very good quality and high power and Kind price and speedy delivery,I like very much and I wish to buy one more set soon.Thanks again for this very good product!
Date published: 2014-01-23
Rated 5 out of 5 by from The positive reviews have it right!!!I bought the DTA-100a to run my Audio Nirvana Super 8's, knowing that I would have way more power than it would actually take to run the speakers. Power isn't really the issue with the speakers (a 13 watt T-amp ran them just fine), it is how revealing the speakers are, and the Dayton is a great match! Super quiet, super clean and a great match for my tube preamp! I really am trying to put the best sounding system together for the least amount of money, and the Dayton ticks all of the boxes, and then some! Great purchase!
Date published: 2014-01-23
Rated 2 out of 5 by from Good While it LastedI bought this little amp in early 2012.  It worked great for about 18 months.  Thought it might just be the power supply but it was the main unit that failed.  It would be a great value if it was rock solid.  The sound was good while it worked.  The unit looked great on my desk and seemed as though it was well built but developed a crackle when adjusting the volume after about a year of use.  Would love to buy another but I think the build quality is just not quite there.
Date published: 2014-03-18
Rated 5 out of 5 by from Great amp, has had only one issueI bought my dta-100a amp back in September of 2012 so i have had the amp for a little over a year now. Since then it has been working great. The only problem i have had started about a month ago. The problem i am having is that occasionally the left output will all of a sudden stop working. Its not to much of an issue as simply tapping on the top of the amp will bring back the left channel but other than that it has treated me very well. I also want to note that the amp has been on nearly 24/7 since i purchased it a little over a year ago. It has held up better than any other desktop size amp i have used.
Date published: 2014-01-19

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  for a prompt reply.
Dayton Audio DTA-100a Class-T Digital Mini Amplifier 50 WPC

Loud enough for house parties? (With BR-1)

I assumed this would be loud enough for a house party when combined with the Dayton BR-1 speakers. But then I read more reviews and see people mentioning that this amp can only produce reasonably good sound up to 30W total (15WPC).That makes me worried.Would this combination be loud enough for a house party? Lets say the space would be about.. max 15'x15' or a typical apartment living room in NYC lol.
Asked by: P.Chan
Yes, with those speakers this amp would most definitely be loud enough for a house party, especially if it's in an apartment. I'd say it would even be enough for a party in a full-size detached house. However, if you really want an awesome house party then I'd suggest adding a powered subwoofer too. The Dayton speakers you mentioned do have fairly good bass, since they have fairly large 6.5" woofers, but I feel that bookshelf speakers pretty much always need to be complemented by a subwoofer, especially at a house party. However, since you're in an apartment you'll want to be careful with a sub because it could really annoy your neighbours at house-party sound levels.This amp can actually produce 60W total (30WPC) at reasonably good quality, not just 30W as you mention. It can produce 50WPC at 5% distortion (which of course would sound pretty bad), and at 30WPC the distortion is 0.01%, which is low enough to be undetectable by pretty much everyone. Also note that at a house party most people won't be analyzing the sound quality all that closely, so 5% distortion will, for the most part, go undetected at a house party.When it comes to determining how loud a particular stereo system will be, something to keep in mind is that in order to make a sound twice as loud (as perceived by humans), 10 times more power must be supplied. So, a 1000W amplifier will only be twice as loud as a 100W amplifier, assuming that the same speakers are used with both amplifiers. This means that the difference between this 100W amp and a typical high-powered home-theater system (which is about 500W) won't be all that much.Also note that when music is amplified by 100W, and is played by typical bookshelf speakers such as your Daytons, it will be REALLY loud. For example my 100WPC stereo system (which has bookshelf speakers fairly similar to your's), it is uncomfortably loud at full volume, even at a party. Usually at a house party I don't turn it up much past 20W/channel because it's simply too loud at that point (yes, I've measured it!).
Answered by: eboyer
Date published: 2013-10-15

Good amp for Polk Audio Monitor 12 Series II

sorry if the question is dumb or obvious but im kind of new to all of this. As the question states above, will this amp be a good amp to drive my Polk Audio Monitor 12 Series II. Polk Audio's website states a nominal impedance of 8 ohms, a efficiency of 91 dB and a Recommended Amplifier Power 20 - 400 watts per channel. since this amp outputs 50 wpc im assuming this amp should be good enough to drive those speakers. im open to sugestions about other amps or a reciever if you guys think it will be a better option but im in really tight budget so i cannot spend more than 150.Thank you
Asked by: JRT0808
First this is not a bad amp. However - you have a classic speaker that is considered very good in audiophile speakers. So the amp you have chosen is not an ideal match. Think of it like this - you're using bargain tires on a performance car. Class D is at it's best for subwoofers and pro applications where tons of power are needed in a lightweight form factor. For "musicality" and low price, a Class AB amp is a better match for your speaker. Use the search function and look at the AudioSource AMP102 2 x 50 Watt Power AmplifierBrand: AudioSource | Model: AMP102 Part # 302-649. It's a few dollars more - but a far better amp. If you want more power - get a larger AudioSource. Sorry - but audiophile sound - and an amp that will match and do your speakers justice just costs more. If you plan to play them loud - I would suggest 200 watts / channel. Low power amps tend to cliip when pushed - that blows speakers more quickly than a good high powered amp.
Answered by: MarkAJH
Date published: 2014-03-21

High frequency noise from computer?

I just hooked up this amp to my HP computer. I get a high freq hum when I plug into anything directly wired to computer. I have tried: computer soudcard, Creative Sound Blaster USB Sound card (RCA and headphone jacks), mp3 player attached to computer by usb ( hum goes away when player is unplugged from usb). This happens with both inputs (RCA and front miniplug). Is this a ground loop issue? What is the best cure?
Asked by: dollarbill
One reason is the problem with the computer noisy power supply and the way the internal routing of PC is done. The second is the ground loop you are getting when using the usb connector. Amplifiers are very sensitive to grounding and ground loops are often problem with sound equipment. Now ground loop is mostly low hum, but because of the type of switching type of power supplies computer use they can introduce noise to the system. So if it goes away when USB is unplugged then that is the easiest solution if it is workable. All the other solutions are more complicated and require additional components and might require some trial end error work. One is to see if separate grounding wire would do anything. Sometimes it helps, but not always and sometimes it makes things worse. It easy to try though, just a wire to case to case. I have noticed in the past that the power to external amplifier is the main reason and if that can be filtered, it is one answer. If the amp. can be tested by running it with the battery and the noise goes away then the amp power supply is the problem. Two switching supplies interfering with each other and introducing noise or even normal transformer in non grounded system can do that. In this case you have a switching supply,so it is even more likely the source. There are equipment to get rid of that kind of noise and pro sound stores usually have them for sale. Used often between laptops to soundboard.
Answered by: PasiPT
Date published: 2013-09-09

using 16 ohm speaker

i have a basic understanding of ohms and the resistance. although i'm not sure if having a 16 ohm speaker on this 8 ohm recommended amp result in my speakers receiving half of the power, or 25 watts per cannel.
Asked by: landshark
You can use this amp with 16 ohm speakers, and yes the power is lower at 16 ohms. For a 100% efficient amp - the power would half at 16 and double at 4. And then double at 2, and 1 etc... This kind of amp doesn't really exist although a few models that were insanely expensive were created a few decades ago. History aside, your half is a good planning assumption and your speakers will work just fine.
Answered by: MarkAJH
Date published: 2013-02-02

The TK2050 is rated at 10-36 Volts. Could one run 2 12 batteries in Series?

That would be about 14 volts for each battery = 28 volts at a full charge.
Asked by: ericlp
I have heard this amp can take up to 30V cleanly and safely. Note: this probably voids your warranty.
Answered by: XLR8R
Date published: 2012-08-27

Can it be run bridged?

The title says it all: Can I run it in mono bridged mode? I know one channel would have to be inverted, but I don't know enough about Class T to know if I can then take both positive terminals and drive one speaker in mono.
Asked by: haef
No, the TA2050 chipset is not designed for parallel or bridge tied load (BTL) operation. If you need more power per channel, you could bi-amp your speakers (if possible) using 2 DTA100a's. If you need more power than that (i.e. horribly inefficient speakers or a very large or very acoustically dead listening area) it would be better to use a more powerful amplifier. Having said this, if you are driving the DTA100a directly from a computer or MP3 player, inserting a gain stage (control preamp or equivalent) between the source and the DTA100a may yield more usable output. (The DTA100a is reasonably input sensitive, but the output of some computer and MP3 outputs is often lower that that required to drive the DTA100a to full output. However, be aware that it is also possible to overdrive amp input stages or push the amp to clipping, both of which can cause spurious signal output that can damage speakers. In other words, if it sounds bad, TURN IT DOWN; also if it sounds bad at low levels, TURN IT OFF and rigorously check your signal chain and output connections.
Answered by: Doc Jones
Date published: 2013-06-21


Customer Projects

Customer projects that include: Dayton Audio DTA-100a Class-T Digital Mini Amplifier 50 WPC

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

Customer Discussions

Discussions in our TechTalk Forum that include: Dayton Audio DTA-100a Class-T Digital Mini Amplifier 50 WPC

If you would like to start a discussion about this product, post a thread in the TechTalk Customer Forum.
Parts Express Free Shipping at 98 Dollars

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,OH45066USA

© 1996-2014 Parts Express, All Rights Reserved