4x100W at 4 Ohm Class D Digital Audio Amplifier Board STA508 (TK2050)

Brand:| Model: AA-AB33182
Based on two TC2000 and four TP2050 chips from Tripath, this Class-T audio amplifier board simplifies the creation of exceptional sounding custom multi-channel systems.
  • Perfect Class-T architecture featuring Tripath TC2000 and TP2050
  • Four channels -- each up to 100W
  • Pre-assembled, pre-tested
  • Ample heat sink with cooling fan
  • Audiophile quality sound
  • Up to 90% efficiency
Part # 
Weight: 1.15 lbs.  
List Price$99.95
You Save50%
Your Price
Buy 4-up$44.90
Part # 320-335
Qty:  EA
Available Payment Methods

Product Details

4x100W at 4 Ohm Class D Digital Audio Amplifier Board STA508 (TK2050)

Based on two TC2000 and four TP2050 chips from Tripath, this Class-T audio amplifier board simplifies the creation of exceptional sounding custom multi-channel systems. Compatible with power supplies ranging from 10V to 30V DC, it can be used in many audio applications. The amplifier has four channels with the same power of up to 100 watts each, resulting in outstanding sound quality and versatility. You can employ any number of channels you like, and leave the others unused.

This amplifier is exceptionally well designed, with a lot of power reserve, high fidelity, low distortion, good S/N ratio, high sensitivity, and full protection with heatsink and fan. These ideal characteristics make this amplifier a candidate to become the basic building block of your future high fidelity system, or it can become the element that will upgrade an existing system.

Features and Specifications: 
• Two Tripath TC 2000 and four Tripath TP2050 chipsets
• Over/under voltage protection, over current protection, over temperature protection
• Input sensitivity: 520 mV @ 100W per channel 
• Input impedance: 10 kΩ
• Efficiency: 90.3% @ 100W per channel
• Minimum impedance (per channel): 3.2Ω
• Output power (using 30V power supply): 64W x 4 @ 4Ω (1% THD+N), 108W x 4 @ 4Ω (10% THD+N)
• Frequency response: 20 to 20,000 Hz (±3 dB) 
• Signal to noise ratio: 100 dB (A-weighted) 
• DC power supply range: 10V to 30V
• Dimensions (L x W x H): 153 x 112 x 53 mm.

4x100W at 4 Ohm Class D Digital Audio Amplifier Board STA508 (TK2050)
  • BrandParts Express
  • ModelAA-AB33182
  • Part Number320-335
  • UPC844632007910
  • Product CategoryAudio Amplifier Boards & Modules
  • Unit of MeasureEA
  • Product Rating
    (8 Reviews)
  • Weight1.15 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.

Similar Products

View similar products to the 4x100W at 4 Ohm Class D Digital Audio Amplifier Board STA508 (TK2050)
in the Audio Amplifier Boards & Modules product category.


4x100W at 4 Ohm Class D Digital Audio Amplifier Board STA508 (TK2050)
4x100W at 4 Ohm Class D Digital Audio Amplifier Board STA508 (TK2050) is rated 4.0 out of 5 by 8.
Rated 3 out of 5 by from The box says Clas-D ... STA508I bought this a while back, put it aside, never used. Now I saw other user commented it is not Tri-path class-T ... and LOL he was correct.Not sure what to make of this. This is probably one of the rare mistake PE made. But the product description does not seem to accurate.
Date published: 2015-04-29
Rated 3 out of 5 by from STA508 not TripathThis is STA508 part from STM, and this is not the Tripath chipset as mentioned...
Date published: 2014-10-25
Rated 5 out of 5 by from Very good amp for the priceI have two driving large open baffle speakers. I checked the datasheets before buying these. At the rated 100W per channel THD is just over 5%. At 70W they are at 0.005%! They sound great. I will be using them a lot.
Date published: 2014-07-24
Rated 5 out of 5 by from These amps are all so great. This is no exceptionThis product, just like all the Sure Amp Boards, works great, has next to no distortion and easily embeds in audio projects. I have put this thing in countless custom projects and the new owners are always blown away. Sometimes, I put these right in speaker cabinets I've restored or build, with a BlueTooth unit to create an almost wireless sound system. People LOVE it.
Date published: 2014-03-08
Rated 3 out of 5 by from Didn't work in the car. Worked fine on the computer.The amp picked up way too much noise to be used in the car. I spent all day with no success trying to get it grounded enough to stop the noise even ran a ground directly to the battery. Put the amp in different locations and ended up using a regular auto amp instead with no problems. Not sure if there is a filter or something that would allow it to be used in the car since the directions say it can be used for auto. I hooked it up to a 12 volt and then a 24 volt power supply to a laptop in the house and it sounds good with either power supply with no background noise.
Date published: 2013-05-12
Rated 5 out of 5 by from Wish I had this decades ago!Got this to drive a multi-speaker basement setup: 2 Bose 301 Series II, 2 Realistic rear mini speakers, 2 large Utah bookshelf speakers (and eventually 2 AR-4 speakers, once I re-cone them). I wanted to see how much current it was taking since the power supply (24VDC, 14.6A, Part #: 320-316) fan was not running. At idle, it took 0.37A. At too loud for upstairs TV watchers, it took 0.4A. I measured it with 2 different meters. Since my power supply would only go to 27.4V, that is 10.96W input power. So it is loafing, with lots of head room, and sounding very good! I drove it with a McIntosh C27 preamp.I wish I had this amp decades ago when I was providing the sound for a parade float for a children's chorus. It would have sounded far better than what I had then and it would have run on batteries (even 2 x 12V lawn tractor ones would have lasted the duration of the parade). And it would sound far better than the typical float "boom box" setup.This amp would also have been excellent for providing the sound for a Jr High musical in a sound challenged cafeteria-auditorium. The individual channels would have allowed adding the proper delay between the front audience speakers and the middle audience speakers, or for adding individual channel echo-canceling signal processing.
Date published: 2013-04-18
  • 2015-06-02T06:27CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.3
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_8
  • loc_en_US, sid_320-335, PRD, sort_mostRecent
  • clientName_PartsExpressInternational

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.
4x100W at 4 Ohm Class D Digital Audio Amplifier Board STA508 (TK2050)

Does it have any way of controlling the volume? If, how/where? If not, is it possible to add? 

Asked by: Nikolaj

Does this board already come with the heat sink and fan as pictured?

Asked by: CaliWoodSpecialty
Yes this board comes as pictured.
Answered by: MattP
Date published: 2015-05-26

I will be attaching this amp to the underside of a plywood furniture. I was planning to use wood screws to secure it, but I now realize I need standoffs. What method to you suggest for securing it to plywood?

Asked by: Frank142

I have bought one of this amp a while back, haven't used it. And after getting ready to use it, found that it said in the box class-D Audio Amp - STA508 ?! I thought I was buying class-T ... so what exactly is the correct product description.

Asked by: gfyl
The correct description has it listed as a class T amplifier.
Answered by: MattW
Date published: 2015-05-09

I'd like to know if I can use 12v 60amp on this amplifier.

Asked by: Fiot
Yes that will be fine with this amplifier.
Answered by: MattP
Date published: 2015-03-11

I am breaking in a BP102 for a horn loaded sub. The plans call for 25hz @ 8-10v for 12 hours. I'm only able to get it up to 7v before the amp starts to clip. Is this normal? Does the line level output voltage from my pc affect the headroom of the amp? 

Asked by: Jake Jarmon
I should add I'm using an Xbox 360 PSU 12v 16A.
Answered by: Jake Jarmon
Date published: 2015-01-19
  • 2015-06-01T08:31CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.3
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_35
  • loc_en_US, sid_320-335, PRD, sort_recentQuestionsFirst
  • clientName_PartsExpressInternational

Customer Projects

Customer projects that include: 4x100W at 4 Ohm Class D Digital Audio Amplifier Board STA508 (TK2050)

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

Customer Discussions

If you would like to start a discussion about this product, post a thread in the TechTalk Customer Forum.
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,OH 45066USA

© 1986-2015 Parts Express, All Rights Reserved

Live Chat Software