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Sure Electronics AA-AB32189 2x100W TDA7498 Class-D Amplifier Board

Brand:|Model: AA-AB32189|Part # 320-303
DIY audiophiles rejoice! This 2 x 100W Class-D amplifier board is perfect for two-channel critical listening.
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Due In: 2/29/2016
List Price$39.99
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Part # 320-303
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Highlights
  • 2 x 100W Class D amplifier
  • Small footprint for space limited applications
  • Perfect amplifier for dedicated stereo use
  • Built-in cooling fan and over-temp protection circuit
  • 14 to 39 VDC power supply required

Product Details

Sure Electronics AA-AB32189 2x100W TDA7498 Class-D Amplifier Board

This amplifier board features a state-of-the-art, dual channel Class-D TDA7498 IC, which delivers up to 100 watts per channel. The small 3.6" wide by 4.8" long footprint allows this amplifier board to be used in many applications were size constraints limit the use of conventional amplifiers. Just add a 14 to 39 VDC power supply, signal source, and speakers!

A low noise cooling fan is mounted atop the robust heatsink to maximize heat dissipation. Thermal, over/under voltage, and current protection circuits are also included to extend the longevity of the amplifier board. Four fixed gain settings are available to allow for volume control at the source, and stereo RCA line-level inputs are pre-attached. Mounting holes are provided as is a 2.5 mm x 5.5 mm power jack for quick connection. Screw-down phoenix-type terminals are included for quick speaker wire connection.

Features:
• Class-D amplifier topology featuring TDA7498 amplifier IC
• Heatsink with attached fan
• Pre-drilled mounting holes
• Over-temperature, over/under voltage, and over current protection circuits
• Phoenix-type speaker terminals
• Line-level RCA input

Specifications:
• Power output (w/ 36 VDC power supply): 100W x 2 (6 ohms, THD 10%), 80W x 2 (8 ohms, THD 10%), 78W x 2 (6 ohms, THD 1%)
• Frequency response: 22 to 22,000 Hz
• Minimum impedance: 4 ohms
• Recommended power supply: 14 to 39 VDC, 6A regulated
• Fixed gain settings: 25.6 dB, 31.6 dB, 35.1 dB, 37.6 dB
• Power input jack: 2.5 x 5.5 mm, center-positive
• Dimensions: 4.8" L x 3.6" W x 1.4" H



Sure Electronics AA-AB32189 2x100W TDA7498 Class-D Amplifier Board
  • BrandSure Electronics
  • ModelAA-AB32189
  • Part Number320-303
  • UPC844632096686
  • Product CategoryAudio Amplifier Boards & Modules
  • Unit of MeasureEA
  • Product Rating
    (14 Reviews)
  • Weight0.87 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 Sure Electronics AA-AB32189 2x100W TDA7498 Class-D Amplifier Board
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Reviews

Sure Electronics AA-AB32189 2x100W TDA7498 Class-D Amplifier Board
Sure Electronics AA-AB32189 2x100W TDA7498 Class-D Amplifier Board is rated 4.7143 out of 5 by 14.
Rated 5 out of 5 by from Awesome little ampI used this to power a component systems of two 6.5" and 1" tweeters rated at 65RMS watts, and this this amp works great! I have it powered by a 36a powersuppy from Sure Electrons @ 36v and everything works flawless. Will buy again.
Date published: 2015-12-12
Rated 5 out of 5 by from It just works!Project Scope - Backyard Sound SystemSource - Cheap BT 4.0 tablet for streaming connected to MPOW BT 4.0 receiver.Amplifier - AA-AB32189 (This Amp) Powered by PS-SP11115 24vdc 145wattSpeakers - Yamaha NS-AW150BL 6ohm 35watt nominalResult - It just works!To summarize, I was delighted to find an amp that matched the specs of the speakers as well as this one. Matched up with ample power, the system sounds about as good as good can be. I live in a dry climate so I expect the gear to hold up well. The hinged box was fitted with standoffs I had lying around and the input / output cables were chosen for durability so the installation should hold up well. As for the sound quality and power, very surprising.
Date published: 2015-12-09
Rated 5 out of 5 by from Magic Battery Portable PALast winter I was in need of a completely battery portable PA system to use with a flash mob promoting a community theater show. I own an old set of wonderful Grundig miniature acoustic suspension speakers I once used for my car stereos before you could even buy small boxes for automotive use. I chose the Sure Electronics 2x100 Class D amplifier to run them with everything mounted on a wood frame including a pair of 7AH 12 VDC gel cell batteries. In spite of the cold weather and various venues as large as a 400 seat movie theater the system played the piano accompaniment from a portable compact flash recorder with more than ample volume and great fidelity. Heads turned to try to see where the piano was located! The little amplifier sounded effortless as it drove my inefficient little speakers. The Grundigs always turned heads as they produce way more bottom than their tiny LF driver should do. The amplifier's ability to effortlessly pump lots of current into the 4 ohm voice coil load was a perfect match. The efficiency of a class D audio amplifier is also amazing. After being out all evening, performing at five venues the batteries still had over 90% capacity left.
Date published: 2015-08-04
Rated 5 out of 5 by from Great Amp!!I purchased 3 of these as a start to my whole home audio setup (9 more on the way). I would've used the 6 channel variant except it didn't break out the standby and mute controls for each channel pair, they were all tied together; this one has mute and standby controls, so I can turn off each zone independently. Works great for driving 8-ohm in-wall speakers (don't know the brand/type, they were with the control4 system that was in the house before). Running 20volts, (datasheet says max power into 8ohms is around 35W) and they are ear-splittingly loud with no discernible distortion (not an audiophile, just an average user with some experience), I had to leave the gain on low to allow adequate precision on the source's volume control.A few notes:The pcb appears to be a different revision from the one shown, so the following (and the accompanying picture) is about the version I have:-no output screw block for daisy chaining the power, however, it does make it a little bit smaller.-The alternative input for audio are 2 sets of 0.1" holes (4 each: Left, Gnd, Gnd, Right), one behind the other. Great for either a set of screw terminals, or two sets of wires for daisy chaining. (In the picture, they have screw terminals, I added those. They don't come populated)-The screw terminals on the power input are populated (at least on mine), so that made setup easier!-There is no footprint/connector for the volume control daughter board (on the input side). It does, however, make the board a little smaller overall.-The gain switches appear to be different from the silkscreen labels, so don't just assume setting them to medium is medium. I just left the input device volume the same and flipped the switches while listening to determine which ones were what, pretty easy.Lastly, the fan is not on a thermal control, it is always on, even when the amp is muted or in standby, which mine are going to be spending the bulk of their life in. It is a 12V fan, and fairly small current, so you could switch it on externally on when you turn the amp on. I just unplugged and removed it (the amp didn't use the sense line from the fan, so no issues there) because I'm running nowhere near max power and in a well-ventilated case, mounted vertically. Even at unnervingly loud volumes I couldn't feel any warmth at all, however YMMV.Note, the picture shows the amp without the fan because I removed it, the amp does indeed come with a fanTL,DR: awesome amp, found no problems and it is perfect for my whole house audio setup!
Date published: 2015-05-14
Rated 5 out of 5 by from Great Amp!Purchased 3 of these as a start to my whole home audio setup (9 more on the way). Would've used the 6 channel variant except it didn't break out the standby and mute controls for each channel pair, they were all tied together; this one has mute and standby controls, so I can turn off each zone independently. Works great for driving 8-ohm in-wall speakers (don't know the brand/type, they were with the control4 system that was in the house before). Running 20volts, (datasheet says max power into 8ohms is around 35W) and they are ear-splittingly loud with no discernable distortion (not an audiophile, just an average user), I had to leave the gain on low to allow adequate percussion on the volume control.A few notes:The pcb appears to be a different revision from the one shown:-no output screw block for daisy chaining the power, it does make it a little bit smaller, so that's a plus.-The alternative input for audio are 2 sets of 0.1" holes (4 each: Left, Gnd, Gnd, Right), one behind the other. Great for either a set of screw terminals, or two sets of wires for daisy chaining.-The screw terminals on the power input are populated (at least on mine), so that's good!Lastly, the fan is not on a thermal control, it is always on, even when the amp is muted or in standby). It is a 12V fan, and fairly small current, so you could switch it on externally on when you turn the amp on. I just unplugged and removed it (the amp didn't use the sense line from the fan, so no issues there) because I'm running nowhere near power, and even at max volume I couldn't feel any warmth at all, however YMMV.TL,DR: awesome amp, try it, and if you don't like it, you're only out about one tenth the cost of a similarly performing name brand amp.
Date published: 2015-05-13
Rated 5 out of 5 by from Impressive Little AmpPurchased the Parts Express - 2x100W TDA7498 Class-D Amplifier Board along with the recommended 24V power supply to power my vintage Polk Audio Monitor 10s. I'm using my computer as the source/pre-amp input for my primary multi-media system. I usually prefer to use vintage audio equipment in my music systems (I have a Dynaco ST-70 tube amp as well as several behemoth receivers from the 1970s), but wanted to try one of these tiny chip-amps. All I can say is WOW this little thing is impressive! I was planning to power this with a 36V Mean-Well power supply, but I'm glad I tried the 24V unit from PE (saving $$ ). I adjusted the output up to 27V and the output of this amp is quite loud, with tremendous punch in the lower frequencies, smooth through the midranges and clear and quite airy (not harsh at all) in the upper stratosphere. I'm hooked, and already planning to get another to drive a pair of large end-table sized (circa 1975 Audio Spectrum) 15 inch 3.5 ways I'm in the process of rebuilding (again).
Date published: 2015-02-27
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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.
Sure Electronics AA-AB32189 2x100W TDA7498 Class-D Amplifier Board

Would I need a separate power supply and what size is the power input female jack.

Asked by: 172829229
Yes this requires it's own power supply, we recommend this:http://www.parts-express.com/sure-electronics-ps-sp11184-24-vdc-88a-200w-regulated-switching-power-supply--320-3140The power input is 2.5mm x 5.5mm, center positive.
Answered by: MattP
Date published: 2015-12-09

Is there a way to add a volume control to this amp? It looks like there used to be one, but it is discontinued...and I can't find any information on another option.

Asked by: calan
You can add volume control to any amplifier with the addition of a potentiometer.  You can purchase a double wipe, logarithmic 25k audio pot and connect it to provide volume control, https://www.parts-express.com/25k-audio-taper-stereo-potentiometer-1-4-shaft--023-648.  The basic design would involve connecting one end of the potentiometer to the input signal, the other end of the potentiometer to the signal ground, and finally, the center pin to the input of the amplifier module, this would be repeated for each set of terminals representing left and right.  Further directions for wiring potentiometers can be found in many forums on the internet.  If you don't want to get involved in any electronics then something like https://www.parts-express.com/rolls-hv6-passive-headphone-volume-control--245-1214 would work with the proper adapter cables.  Although, the manual doesn't list input or output impedance so there may be some poor matching in that regard (you would only want to use this product with something capable of driving a pair of headphones).  I am surprised I couldn't find a less expensive example of this product with simple RCA connectors on PE's website.There are also several active solutions, such as a pre-amplifier.  
Answered by: briand442
Date published: 2015-10-20

how many watts rms does this run at 4 ohms

Asked by: mobstrong
Unfortunately Sure does not provide output power at 4 ohms for this amplifier.
Answered by: MattP
Date published: 2015-08-18

Which would work better with this amp and why? 320-314 or 120-055 I'll be using the amp to power 4 Hivi B4Ns and 2 tweeters (undecided on which tweeters). It'll also power a bluetooth receiver (320-351) and a pre-amp (320-6538).

Asked by: Collinjay
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: 2015-06-12

Is it possible to "Bridge" the speaker output of this amplifier. Or, would it harm the amplifier if ONLY one speaker was connected? I'm trying to use this amp with a Digitech guitar preamp and a single 12" speaker.

Asked by: voicecoil
No bridging. It already uses a full bridge to drive the speaker output. No harm (usually) to leave one output unconnected. Just don't drive that input.
Answered by: stoc005
Date published: 2015-07-01

I want to put this amplifier in a portable speaker project but I am having a difficult time finding a LiPo battery for the power solution. Do you have a recommendation as to a portable power solution that will render the desire 36VDC for 2x100W output?

Asked by: JagoABN
In answer to your question, LiPo batteries are 3.7 volts per cell, therefore if you were to purchase two five cell (referred to as 5S) batteries you'd be able to have 37.5 volts (really about 40 when fully charged) however you'd need a GOOD LiPo "Balance Charger" in order to charge the batteries correctly. WITHOUT a good "Balance Charger" you will eventually destroy the battery. Also, these batteries are VERY common for use in RC (remote control) Cars, Boats and Airplanes. ANY good RC hobbyshop will carry both the batteries and chargers. You may want to read up on the use and charging of LiPos and there's TONS of stuff on the Internet.
Answered by: voicecoil
Date published: 2015-10-19
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