2x100W at 4 Ohm TK2050 Class-T Audio Amplifier Board Only

Brand:| Model: AA-AB32186
This audiophile-grade amplifier board was designed using the critically acclaimed TK2050 chipset for efficient power output, just add a 12 to 32 volt DC power supply.
  • Line-level audio signal input
  • Mounting holes facilitate installation and fixing
  • Excellent heatsink and powerful cooling fan
  • Over/under voltage turn off
  • Over-current protection
Part # 
Weight: 0.65 lbs.  
List Price$79.95
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Your Price
Buy 4-up$34.98
Part # 320-334
Qty:  EA
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Product Details

2x100W at 4 Ohm TK2050 Class-T Audio Amplifier Board Only

This amplifier board is designed for the audio enthusiast who would rather build it than buy it. Each board has been thoroughly engineered, tested, and manufactured to above industry standards. Innovative features have been implemented into the board designs which have exceptional performance and would look as great in an art gallery as they will in your next audio project. The 2 x 100 watt amplifier board integrates Tripath's high performance TC2000 and TP2050 chips. Powered by any DC voltage from 10V to 32V, this high efficiency design is capable of driving 4 ohm or 8 ohm speakers with up to 100 watts per channel. Thermal management is maintained through the use of an temperature activated fan.

Features and Specifications:

  • Size: 148.30 (L) × 106.80 (W) × 35.50 (H) ±0.2 mm
  • A perfect "Class D" architecture
  • Wide power supply range: 12V to 30V, maximum 32V
  • Frequency response: 20 Hz to 20 kHz (±3 dB)
  • Signal/noise ratio: 100 dB (A-weighted)
  • High output power: 
        30W @ 6Ω, < 1% THD+N 
        40W @ 8Ω, < 3% THD+N 
        100W @ 4Ω, < 10.0% THD+N
  • High efficiency: 
        86% @ 60W 8Ω 
        82% @ 46W 6Ω 
        90% @ 100W 4Ω
  • Audiophile quality sound: 
        0.007% THD+N @ 30W 8Ω 
        0.005% THD+N @ 70W 4Ω
  • Line level audio signal input
  • Mounting holes facilitate installation and fixing
  • Several wiring methods facilitate connection
  • Excellent heat sink and powerful cooling fan on TP2050 eliminate your worry on heat dissipation
  • Over/under voltage turn-off
  • Over-current protection
  • Over-temperature protection

Product Specifications
  • Power Output (RMS Per Channel @ 8 ohms)40 Watts
  • Special FeaturesBoard Only Module
2x100W at 4 Ohm TK2050 Class-T Audio Amplifier Board Only
  • BrandParts Express
  • ModelAA-AB32186
  • Part Number320-334
  • UPC844632095771
  • Product CategoryHome Audio Amplifiers
  • Unit of MeasureEA
  • Product Rating
    (13 Reviews)
  • Weight0.65 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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2x100W at 4 Ohm TK2050 Class-T Audio Amplifier Board Only
2x100W at 4 Ohm TK2050 Class-T Audio Amplifier Board Only is rated 4.6154 out of 5 by 13.
Rated 5 out of 5 by from Sounds great!When it comes to precise stereo image and speaker control, both in the midrange and bass, this is the best amp I have ever heard. This results in a extremely detailed and "tidy" sound. Very studio-monitor-like. I use it with a Delta 24V/150W switch mode power supply. It can be adjusted up to 27V. At this voltage the max power before clipping is about 2x30W/8ohm anf 2x55W/4ohm. This amp needs a long run in time before it sounds good, in my opinion about 15 hours.
Date published: 2014-08-15
Rated 5 out of 5 by from A great amp !! Work excellent !I bought this unit about 2 weeks ago. I'm very pleased with its performance.I would definitely recommend this product without any hesitation. Thanks for offering such a great product !
Date published: 2014-06-14
Rated 5 out of 5 by from Good replacement for older ampsI got tired of repairing the two driver boards in my Sansui 5000X. I bought the Sansui receiver/amp in 1971 so it holds sentimental value for me. This little amp fit very nicely in the 5000x chassis after removing the driver boards and capacitor banks. I had a 12volt, 4 amp SMPS that fit the underside of the Sansui chassis.At this price point, this little amp can't be beat. Although mine only delivers aprox. 48 watts it drives a pair of ESS AMT PS-820 speakers with ease. Those with less efficient speakers would want a larger voltage/current PS.Products quality is outstanding and parts placement is well thought-out.No knocks for this product so far.
Date published: 2014-06-13
Rated 5 out of 5 by from Very Good soundI have 2 tuba amps which costs several 100 euro each.But this amp seems to beat them.....Never expected this quality.
Date published: 2013-10-02
Rated 5 out of 5 by from very nice amp - runs cool and quieti'm using this with a switch to turn on eight speakers (2 at a time). it is really more than i had expected. need to look into the factory tuning mentioned here - will probably pull off the heat sink and take a look.i got some good advice from an engineer at parts-express too. just having 60 seconds to run an idea by someone was worth a lot.
Date published: 2013-09-22
Rated 5 out of 5 by from Stage monitor amp.Got one of these from a friend. I had a all 2-4" speaker stand mount personal monitor filling a dead spot. Added this amp and an Load. Perfect. Clean and reliable.
Date published: 2013-06-21

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.
2x100W at 4 Ohm TK2050 Class-T Audio Amplifier Board Only

What power adapter do I use to wire this to a 12v battery?

Asked by: BryanM
2.5mmx5.5mmx11.5mm dc plug with 6ft cordpart numer for it is 090-492also says m17-01-216 on package
Answered by: agentbanks
Date published: 2014-08-08

Hi Sir/Mdm, Can I bridge the 2 channel become 1? Regards,

Asked by: furion828
Unfortunately this amplifier is not bridgeable.
Answered by: MattP
Date published: 2014-06-20

Hi, I want to know if you can add a 12 volt out next to the power in? I have the correct connector. It would be like the other 2 x 100 Watt amp. Would it be 12 volt if I am putting in 24 volts? Michael

Asked by: Mpjadvo
If i understand correctly you want to input 24V to the amp and are asking if it will output 12V from the second power plug? Unfortunately no, it will only output the same voltage you are feeding into the amplifier.
Answered by: MattP
Date published: 2014-04-28

May be a silly question but I was wondering if a basic printer adapter will work for this? The adapter is 30v @ 500 mA. Thanks in advance for your answer.

Asked by: CDub73
500 mA will be enough to power it up but will not provide enough current draw for much output. The power supply we recommend for this amplifier is no less than 5000 mA.
Answered by: MattP
Date published: 2014-04-28

Hi, I looked up the specs for the TK2050 chip and it says that the outputs can be connected in parallel. Will this board allow me to do that? Thanks!

Asked by: singularity
Unfortunately this amplifier cannot be bridged.
Answered by: MattP
Date published: 2014-04-18

What else do I need with this amplifier?

What power cable do I need, what pre-amp do I need. How do I connect the blue tooth dongle to it?
Asked by: isanglitro
I'd go with 12-10 gauge power cable. No preamp is needed. You'll need a dongle with a 3.5mm stereo output, then a 3.5mm to male RCA cable.
Answered by: dkward
Date published: 2013-10-02

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