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Dayton Audio DTA-100a Class-T Digital Amplifier 50 WPC (Black)

by Dayton Audio
3.8 out of 5 stars  See all reviews (54 customer reviews)

List Price: $129.99
Price: $95.92 & FREE Shipping. Details
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Product Features

  • 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 facilitates use as a high fidelity headphone amplifier
  • Compact extruded aluminum housing with thick black anodized faceplate
  • Short circuit, thermal, and overload protection ensures worry-free operation

Frequently Bought Together

Dayton Audio DTA-100a Class-T Digital Amplifier 50 WPC (Black) + Dayton Audio B652 6-1/2-Inch 2-Way Bookshelf Speaker Pair + RCA AH1650SR 50 Feet 16-Gauge Speaker Wire
Price for all three: $155.63

Buy the selected items together


Product Specifications
Brand NameDayton Audio
Output Wattage50 watts
Color NameBlack
Special FeaturesFront panel line input, Headphone output

Technical Details

  • Front panel line input
  • Headphone output

Product Details

  • Product Dimensions: 5.6 x 3.4 x 2 inches ; 2.8 pounds
  • Shipping Weight: 4 pounds (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S.
  • ASIN: B004JK8BDK
  • Item model number: DTA-100a
  • Average Customer Review: 3.8 out of 5 stars  See all reviews (54 customer reviews)
  • Amazon Best Sellers Rank: #3,902 in Electronics (See Top 100 in Electronics)
  • Date first available at Amazon.com: December 15, 2010

Product Description

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).


Customer Reviews

It has a very nice sound. Matthew  |  17 reviewers made a similar statement
The replacement unit failed after 14 months (2 months after the warranty expired). leo  |  10 reviewers made a similar statement
Most Helpful Customer Reviews
87 of 90 people found the following review helpful
I have owned a Dayton Audio DTA-100 (the original version) for a year now and, just two days ago, I received this Dayton Audio DTA-100a Class-T Digital Amplifier 50 WPC, the upgraded version.

I am as pleased as is possible with both of them. The sound quality produced by these amplifiers is nothing short of amazing.

Both versions use the Tripath TK2050 chipset which offers extremely - and I mean extremely - clean and neutral sound (at its true high fidelity rating of 30 W/Channel) plus very high electrical efficiency (> 85% claimed). It is as 'green' as it comes.

I had written to Parts Express asking them to tell me the difference between the -100 and the -100a; their technician's reply was that the new -100a has an improved headphone amplifier circuit; nothing else has been changed. I wouldn't know about this - I do not often listen to music through headphones and I have never tried using headphones with either of these amplifiers.

Via loudspeakers, the sound produced is the same with both models. And, as stated, it's just great!

I have read where 30 W/channel is "not enough" power. I disagree with that statement; how "loud" music sounds is a function of the sound amplifier power, true to some extent, but it is much MORE a function of the efficiency of the speakers used in conjunction with that amplifier.

Connect a pair of Klipschorns (sensitivity of 105 db/1W/1M - the most efficient speakers ever made - I own a pair) to a 30 W/channel amplifier and that system could "blow you out of the room" (maybe out of your house - maybe even off your block!).
... Read more ›
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32 of 34 people found the following review helpful
3.0 out of 5 stars Excellent amplifier while it worked May 14, 2011
By leo
While it worked, Dayton Audio DTA-100a was an excellent medium-power stereo amplifier. It was very neutral and produces a much more detailed and clear sound than my old Sony receiver. An additional benefit is that it is light, hardly takes any space, and accepts world-wide voltage (110-240 Volts). It used to drive a pair of my Mission 772 speakers just fine, even though the speakers have relatively low sensitivity (sensitivity 85 dB, impedance 8 Oh, recommended amp 25-100 W). Note that DTA-100a specifications claim low total harmonic distortion (THD < 0.01%) only for output power up to 30 Watts (thus, you effectively have 30 Watts instead of 50 Watts per channel, two channels in total). The amplifier's manual says that the speaker impedance must be at least 6 Ohm (otherwise you can check a less powerful Dayton Audio DTA-1 amplifier, also sold on amazon).

Dayton DTA-100a is a type T amplifier, it is a new technology. I bet that in few years, as this technology develops further and T-amps become more powerful, makers of old-style heavy and bulky amplifiers will have hard time selling their "dinosaurs". Note that this is a review for DTA-100a, not an earlier model DTA-100 (DTA-100 has a slight channel imbalance problem, DTA-100a does not). You can also find a detailed review on the web by searching for "Dayton Audio DTA-100a - class D integrated amplifier".

USEFUL HINT: if the amplifier's power indicator blue light is annoyingly too bright for you (as it was for me), then use a small piece of dark paper and a duck tape to cover and dim it.

P.S. Failed after a month (one of the audio channels died), but I got a replacement and I am still happy. They should had made it more reliable even if it would have cost little more money.

P.P.S.
... Read more ›
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50 of 56 people found the following review helpful
5.0 out of 5 stars A True Leap Forward September 2, 2011
Amazon Verified Purchase
This incredible little amplifier has allowed me to assemble a very good sounding stereo system for just over $500. Back in 1990, I was an audiophile always looking for better sound. I had about $6000 into a system that sounded extremely good. I had Apogee Stage planar speakers, a rather large Vandersteen powered subwoofer that reached all the way down to 20Hz, B&O preamp and amp, a top of the line turntable and cartridge, an excellent CD player, and a very good quality cassette deck. The system was carefully voiced to the room and there were patches of sound absorbent material on the walls to quell reflections. There were people who spent more, but I was very happy with the system and everyone who heard it was duly impressed. $6000 in 1990 would be $10,000 to $12,000 today. Because of personal circumstances, I dropped out of the audiophile hobby in 1995 and gave the system to a close friend's son. Recently, I got tired of listening to music through portable players and decided to set up another system. I was a lot older and had many other things that took priority financially. I decided to see if I could set up a cheap two channel stereo system that had reasonable sound. I had heard of the Tripath chip sets that allowed manufacturers to put together an incredibly small, low powered amp that was very musical in its sound. These chipsets were supposed to have a wide soundstage, tight bass and clean and well defined treble. Using them, manufacturers built variants of a Class D amplifier that were very small yet very musical. Because they all used the Tripath chip sets, they named them Class T amplifiers (but they are just a variant of a Class D amp). Class D amps are very green. They are super efficient and use 85 to 90% of the electricity to generate power. They only waste 10 to 15% as heat.... Read more ›
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Most Recent Customer Reviews
5.0 out of 5 stars Super clean audio.
My first one was DOA but it was easy to get an RMA and I got a new one fairly quickly. As things happen I only had time to open the box on the new one and never tested it for over... Read more
Published 1 day ago by L Scott
2.0 out of 5 stars Died after a year
The sound is superb. The reliability is poor. I own four of these, for use in different rooms. After one year, one has died. That suggests pretty poor reliability. Read more
Published 29 days ago by Kevin Sullivan
4.0 out of 5 stars Great ... until it fails ** UPDATED **
This amp worked great for a year and a half, then it completely failed. It is beautifully designed and small. Read more
Published 1 month ago by rrr
1.0 out of 5 stars Avoid
Avoid. Just Avoid. I had two units fail in the exact same manner- I would turn them off and when turned back on _The Amp_, would turn on for a split second squealing, then turn... Read more
Published 1 month ago by J. Carrell
2.0 out of 5 stars constant hum
probably one bad out of production but obviously not tested. Would not tale a chance with this vendor again without some inticement.
Published 1 month ago by Dave S.
5.0 out of 5 stars Amazing little Amp
I use this with my phone and some little JBL bookshelf speakers to play music on my patio and I love it. Read more
Published 1 month ago by Robert Richardson
3.0 out of 5 stars Surprised at this little Amp - in both good ways and bad
THE NICE SURPISE:

This is a really clean & musical sounding amp. And it is able to produce more substantial volume levels than I expected:

The DTA-100A's... Read more
Published 2 months ago by Saint Richard
5.0 out of 5 stars Amazing little amp
This little thing puts out power. I bought a Dayton 12" sub and B652 bookshelf speakers to go with it and the quality and power are amazing! Read more
Published 2 months ago by Alberto Gomez
1.0 out of 5 stars Zero for two: save your money
Yes its true: these sound great... until they blow up.

From my experience the (a) variation of the product is extremely unreliable. Read more
Published 2 months ago by David 4fsc
1.0 out of 5 stars better choices available
This Dayton t-amp is not built very well. From what I read on the reviews, I thought I'd give it a try... maybe Dayton has rectified the issue... Not yet. Read more
Published 2 months ago by Candi&Rob
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