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Dayton Audio DTA-1 Class T Digital AC/DC Amplifier 15 WPC
- Palm-size Class-T 30 watt amplifier
- Great sounding amp also convenient for travel
- Battery or AC powered power supply included for perfect portability
- 88% amplifier efficiency prolongs battery life
- Soft turn-on eliminates annoying speaker pop
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CHOKING HAZARD -- Small parts. Not for children under 3 yrs.
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Don't let the compact size fool you Dayton Audio's DTA-1 mini amplifier is a serious piece of audio gear. A proprietary Class-T amplifier chip enables the DTA-1 to be 88% efficient while still producing pristine, high-resolution output. This makes the DTA-1 T-Amp an obvious choice for powering high efficiency single driver speakers. Up to 15 watts of power per channel is on tap to drive desktop and bookshelf speakers, for the ultimate portable hi-fi setup at home or in your office. The Dayton Audio DTA-1 T-Amp can run off of 8 AA batteries for total portability, or the included switching power supply (with quick-release US and European style plugs) for stationary use. A rear mounted 3.5 mm stereo (1/8) audio input is provided. The amplifier also includes a 6 long, coiled male-to-male 3.5 mm cable for making connections to iPods, MP3 players, PCs, and portable CD or DVD players. Spring-loaded push terminals are incorporated for quick speaker wire termination. Intelligent short-circuit and over-temperature protection ensure amplifier longevity. The Dayton Audio DTA-1 is the perfect replacement for the now unavailable Sonic Impact 5066 NIB class T amplifier. Dayton Audio has taken the technology developed for the Sonic Impact 5066 and perfected it in this hand-held digital amplifier. Specifications: ; Power output: 2 x 15 watts RMS (into 4 ohms @ 10% THD), 2 x 10 watts RMS (into 4 ohms @ 0.1% THD) ; Efficiency: Greater than 88% ; Dynamic range: 102 dB ; Dimensions: 2 H x 6-1/8 W x 3-3/4 D
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Some have pointed out that the blue "on" LED is too bright, which is true. It seems way brighter than it needs to be. But I found that you can cover the LED with a few pieces of Scotch tape which dims the light so that it still serves it's "on indicator" purpose. Or you can, like me, just put a piece of black electrical tape over it.
Cons: Well, all that A-B testing put some wear on the really very flimsy speaker wire connectors at the rear. And one broke. No fixing it. Had to cut away plastic, and solder the speaker wire on to the lead. And: after about a year of sitting in a window location where there is afternoon sun...the plastic case has a bad case of leprosy. As others have noted, that blue light is way annoying (but nothing a bit of black electrical tape can't fix). Operation on 8 AA battery power? I don't think so - this churns through them in about 20 hours of use, and the case design is not going to be friendly to that kind of replacement action.
The amplifier receives sound from my computer, which has seen four different sound output sources since 2009. The speakers have reached impressive volumes with all of them. I've never had to turn the volume on this amplifier all the way up. I get enough volume to comfortably listen to music or a movie while sitting about five feet away from the speakers with the window open and the window AC unit on if I put the volume dial marker right at the rightmost end of the top center volume direction indicator. In other words, the thing produces enough power to drive 8 ohm speakers just fine.
The unit is having problems now. The power cable is pretty finnicky. The unit might have gotten knocked around a bit in one of my moves in the five years I've had it, so I can't fault the thing. I continue to use it (and it still sounds great) by just twisting the power connector until the unit's LED lights back up. That seems to work well enough.
For ports, this unit offers a single 1/8" analog stereo input and a pair of speaker wire clips for output. If you're looking at this unit to drive a pair of headphones, you'll be disappointed. It does not have an 1/8" or 1/4" output. If you need it to drive an old school pair of speakers, though, you can't go wrong here. Great sound and power at a great price. I'm very happy with this purchase.
Sound: Perfectly fine. I have these paired with $3000 speakers that I purchased years ago for use with a tube amp. Excellent speakers. The sound from this Class T amp is quite remarkable for $25. And, I am streaming a compressed digital signal from my laptop via Airport Express, so there is not much chance the sound could possibly be any better.
Build: Shoddy. As I've read other people complain, the spring clip for the speaker terminal broke right out of the box. I fit the spring back in position but it's precarious and I'm sure the housekeeper will knock it well enough to explode parts. Too bad. With just a little better design (maybe for $5 more), this would be a transformative product.