4x100W at 4 Ohm TK2050 Class-T Digital Audio Amplifier Board

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 TK2050 Class-T Digital Audio Amplifier Board

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 TK2050 Class-T Digital Audio Amplifier Board
  • BrandParts Express
  • ModelAA-AB33182
  • Part Number320-335
  • UPC844632007910
  • Product CategoryAudio Amplifier Boards & Modules
  • Unit of MeasureEA
  • Product Rating
    (7 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 TK2050 Class-T Digital Audio Amplifier Board
in the Audio Amplifier Boards & Modules product category.


4x100W at 4 Ohm TK2050 Class-T Digital Audio Amplifier Board
4x100W at 4 Ohm TK2050 Class-T Digital Audio Amplifier Board is rated 4.1429 out of 5 by 7.
Rated 3 out of 5 by from 50% reliability, and missing some features.I recently purchased two of these amps to run 6 Aura Pro tactile transducers + 4 Dayton "Pucks". One amp is running four Aura Pros, the 2nd amp is running 2 Aura Pros (4 ohms each) and 4 Dayton pucks (16 ohms each), two per remaining channel in series, so that amp is running two channels at 4 ohms, and two at 8 ohms. But the 2nd amp whose channels I plan to run at 8 ohms were not working....after troubleshooting a bit, I found the channels are indeed dead. So I'll be replacing the 2nd amp.I'd also mention that the recommended Mean Well amp does not come with a power connection required for this amp, and despite what the manual says, there is not a terminal block for the power input for this amp. So be sure you order part #090-492 to go along with this amp. I simply soldered my power connections for the time being.
Date published: 2013-01-14
  • 2015-04-21T06:31CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.1
  • cp_2, bvpage2n
  • co_hasreviews, tv_0, tr_7
  • 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 TK2050 Class-T Digital Audio Amplifier Board

Can Parts Express confirm that this board contains the TK2050 Tripath chipset by visual inspection? I will be buying a couple if this is the case. Thankyou

Asked by: Thomas Jeffery
Yes. The 320-335 use and spec the TK2050 and TC2000 Chipset
Answered by: TomI
Date published: 2015-01-20

I'm looking for an amp that can drive my tactile transducers and these 4x100W amps look like a bargain. They will be use for a simrig, providing tactile feedback about curbstones, engine vibrations, etc. Will 10% distortion be a problem in this case? 

Asked by: Simracer
Thank you for your question!This particular amplifier board would work great for your simulation rig. You shouldn't need to use 100% of the rated output power at all times, and I really don't think you'll end up using more than 50 watts per channel if you intend to connect four transducers to a driving chair, so the distortion rating should be moot point.Distortion through vibration, however, is much harder to discern. I don't think you'll have an issue with signal fidelity if you do end up using all of the available power.
Answered by: mikevv
Date published: 2014-12-08

Hello, I am building my first boombox and I am powering it with 2 x SLA 12V 7Ah batteries. What's the best way to power amplifier board? Should i connect them in parallel or in series. I plan to use 2x Dayton Audio ND105-4 and JVC CS-V628.

Asked by: Raimondas
Parallel will double your capacity while series will double your voltage. Either method will work for this application since the amplifier can accept anything from 10-30VDC.
Answered by: MattP
Date published: 2014-12-11

On the 4x100W TK2050 Class T Digital Audio Amplifier, what is the maximum voltage?  Would 46 VDC be too much?   I am thinking about the: http://www.parts-express.com/48-vdc-33a-150w-regulated-switching-power-supply--320-3142 to save a few $$.  

Asked by: bigjoe
The maximum voltage recommended for this amplifier is 30 VDC.
Answered by: MattP
Date published: 2014-11-19

will this run 4 x 50w aura shakers with out issues? what power supply should i use to run this amp

Asked by: JsrJet
Yes this will power 4 shakers without a problem. I would recommend the power supply below.http://www.parts-express.com/24-vdc-146a-350w-regulated-switching-power-supply--320-316
Answered by: MattP
Date published: 2014-11-16

can this amp be use for a DIY project (Portable Boom Box) and if so what rechargeable battery do you recommend

Asked by: antonio229
This can work from 10 to 30volts so a battery is possible. The main obstacle would be the required amp rating. at 12 volts you would need over 30 amps and that would be a very large and heavy battery.
Answered by: Chrisf
Date published: 2014-06-06

do these amp boards need a heat sink?

Asked by: freddy1hound
Yes these do require a heat sink and air circulation in order not to be thermally damaged.
Answered by: MattP
Date published: 2014-05-09

I want to run 2 pairs of 8 ohm speakers from my multi-zone receiver, whose outputs must go thru a separate amp (this TK2050) to power the speakers. One spkr set has about 30 feet of wire to travel through. Need recos for making sure this will work well.

Asked by: keithm
Yes this will be fine. a 30 foot run for speaker or signal wire is not a problem at all.
Answered by: MattP
Date published: 2014-04-10

Hi there, reading manual I'll need 50k ohm potentiometer for volume. Will this suffice and is it all I need between source and Amp? Thanks https://www.parts-express.com/50k-ohm-potentiometer--023-550

Asked by: FuzzyEllis
Technically that will work although it will only control one channel. You will need a stereo pot in order to control both channels at once, unfortunately we do not have any 50k ohm stereo pots available.
Answered by: MattP
Date published: 2014-04-08

Could i use L&R channels in stereo and bridge the other 2 channels to drive a sub in mono?

Asked by: Jmacj
Unfortunately this amplifier is not bridgeable.
Answered by: MattP
Date published: 2014-04-07

What power supply do you recommend for the 4X100watt amp? Will it work from an AC>DC switching power supply like for a laptop?

Asked by: MartyR
I would recommend the power supply in the link below.http://www.parts-express.com/24-vdc-146a-350w-regulated-switching-power-supply--320-316
Answered by: MattP
Date published: 2014-04-04

I would like to wire a 24v battery to this board. What size plug will I need to purchase to fit the socket on the board?

Asked by: Islander108
The DC plug size for this board is 2.5 x 5.5mm
Answered by: MattP
Date published: 2014-03-26

What power supply(s) do you recommend with this product?

Asked by: Amped22
The power supply I recommend for this amplifier is below.http://www.parts-express.com/24-vdc-146a-350w-regulated-switching-power-supply--320-316
Answered by: MattP
Date published: 2013-12-05

2.1 Setup?

I want to use this amp for a 2.1 setup. I know I can't bridge the outputs, but I still need a mono out for the sub with a L/R in to have both channels going to it. How can I configure the inputs, with one rca output, from my source?
Asked by: AaronLP
I would use it for stereo. Get the $129 dayton 12 inch all in one. Built in sub, amp, box...Cant beat it!Otherwise you'll be beating the t-amp as one channel for sub. I like these 4x100 for surround sound (No center as the stereo speakers create a nice center image)
Answered by: Progneat
Date published: 2013-11-01

Power distribution

I have a 28V linear power supply rated up to 18A max. I'd like to use it to drive these amp boards and maybe other items in my rack. If I just power the amplifiers, do I need to build some sort of bus or just run them in parallel from the PSU?. Volume control is via media application software. Based on the current overhead, do i need some sort of protection for these boards, or just operate the volume reasonably?
Asked by: greyleopard
Well, there is an easy test for driving several rack items at once. Listen to your amp alone at close to full volume--but not clipping. Then add on one at a time to see if the loudness or clarity changes. Voltage sag in a power supply starts out as lowered output volume potential then just plain bad. You will notice a difference if so. Parallel from the PSU is likely the way to goo--I can't see why not. Protection is almost never needed here. You would need to get the trigger just right to avoid "pumping" the volume. You sound like you don't run anything into clipping anyway. Good project!!
Answered by: Joe from San Francisco
Date published: 2013-10-30


power supply?
Asked by: speaker freack
We recommend the 14.6A power supply with this amplifier.
Answered by: MattP
Date published: 2013-09-27

Will it handle output to different ohm loads; is input pre-amp needed?

1. I want to send this amp's output as: 2 channels into 4-ohm speakers, and 2 channels into 8-ohm speakers. Will this amp handle that type of loading?2. Splitting the stereo line input to feed all four amp inputs: will I need to pre-amplify the line input? Stereo pots will be used for input volume control.Thanks!
Asked by: OldManInTheGarage
The two outputs on this amp will handle two different impedance loads. A preamp is only necessary if the source you are using does not provide a very strong signal. Most standard headphone or line outputs are enough to drive the inputs of these amplifiers.
Answered by: MattP
Date published: 2013-10-31

Can you explain to me how the 4 input channels would work. I would like to add a bluetooth adapter and a hard wired 3.5mm input.

Asked by: dyacono
This model is good for DIY surround sound. For what you want to do, you would need 4 speakers. 2 speakers for your bluetooth and 2 speakers for your handwired 3.5mm, if you wanted to use both sources on this amp.I would recommend buying the stereo model of this line. Then buy a simple rca switch. With a push of a button you would switch from bluetooth to your 3.5mm.Best of luck and enjoy! Fun amps!
Answered by: Progneat
Date published: 2013-07-01

Using two of these with a single power supply

I am considering placing two of these in a full rack width enclosure but would like to use a single power supply, any issues? I was thinking of this power supply - PS-SP11154
Asked by: scrubs
Maybe, but it will probably work just fine. I wouldn't run any of them at full volume because it will make the distortion numbers worse, but I usually don't run them at even half load. But yes, I personally have successfully run multiples of these with a single power supply, although not with the power supply you are using.Things that could happen:- Noise could transfer between all amplifiers- Startup load might pop the fuse/breaker on the power supply- High load (i.e. high volume driving things like subs at 4 or less ohms), might pop the fuse/breaker on the power supply.Having given you all of those standard disclaimers, I personally have not had any problems at all running multiples of these on a single power supply. But the engineer in me is just trying to cover all bases.Here is some simple math. 4 channels X 100 watts X 2 amplifiers in theory would suggest a power supply well over 800 watts. Probably 1000. But since you shouldn't be running these at anything more than about 50 watts anyway, because of the distortion numbers, you will probably be just fine.Remember it is all about peak load to the power supply, and if you are doing something like me where I run these in an active speaker environment, you are going to have tweeters requiring much lower loads than the woofers. In a nutshell, you probably don't need anything close to the 1000 watts in the real world.
Answered by: Audiohack
Date published: 2013-06-17

Can this amp be used for a car audio 4 channel amp?

Just for fun. Can this amp be used for car audio 4 channel amp hooked up to RCA connectors off the head and ran on the car's 12 volt power supply. How well do you think it would perform?
Asked by: Customer
I see no reason this will not work, these are used for that application all the time.
Answered by: MattP
Date published: 2013-07-03

Can use with Dayton Puck Shakers?

Can I use this amply to hook up each of the 4 channels to a couple of Dayton Audio TT25-16 PUCK Tactile Transducer Mini Bass ShakePart Number: 300-388?As I understand it, each shaker has 16 ohm, so in parallel they give 8 ohms per couple so I could hook up two shakers for each of the 4 channels of this ampli and it would work fine, am I correct?Thank you in advance for your help.
Asked by: ftonin
Yes you are correct, you can actually hook up to four of the pucks on each channel and be ok.
Answered by: MattP
Date published: 2013-03-04

Any box/enclosure of this amplifier

Where can i put this. Does part express sell any covered enclosure for this to install in ?
Asked by: tsx2tdi
We do not have a specific enclosure for this amplifier although we have many project boxes that may work.http://www.parts-express.com/cat/project-boxes/1450
Answered by: MattP
Date published: 2013-02-18

What's the real difference..

Hi all - For my next project I would like to build a 2.1 system (a couple of mid ranges with a decent woofer) within the same enclosure.1. Can someone please tell me what is the main difference between this amp and (4x100W @ 4 Ohm TK2050 Class-T Digital Audio Amplifier Board) PE# 320-302 besides the cooling fan?2. I will be using 2 y-rca's to plug into all 4 inputs channels. Ch 1 and 2 will be for a pair of mid ranges. And the 3rd ch will be for the sub. 4th ch will not be used. Q: Can someone confirm whether placing (100 Hz Low Pass 4 Ohm Crossover) PE# 266-444 between this amp and sub is appropriate?Lastly3. What is the bang for the buck in terms of power supply.Thanks in advance, and excuse the lengthy question(s). I will post pictures once done!
Asked by: audiodude
1. Basically the same with the same parts. Slightly different design. Just compare the THD at same watts and ohms. But since they use the same parts, they should be about the same. I own a number of the Sure boards that now appear to be the Parts express board that you are looking at. There are only so many ways to put these together and I would just confirm that you get the features you are looking for like protection circuits, connectors, etc. Some people don't like fans on their audio equipment.2. I would think that you should be okay for this type of arrangement, including the low pass filter. I have run these amps at 4 ohms without problem, although you should pay attention to the THD as you the lower ohms.3. Keep in mind that these amps will not really get you the watts that they claim. Power supplies are everything with these boards and some boards do better filtering and the loading of power and some are a little more forgiving with various power supplies. Just compare how many capacitors they put on the boards for power loading to get a sense for how well the manufacturer pays attention to on demand power drops. At least I don't think that the math really works out from a watts/ohms/amps/volts perspective. But for what I use them for they are great. Watts has never been the only measure of success and I run them a lot lower than their maximums because the quality will be better. I would run these at the highest voltage allowed if at all possible, but this will of course cost a lot more for your power supply. There is so much competition in the 12 volt space (because of pc's# that this is where you will see the best prices. 4 X 100 watts is of course 400 watts. At 30 volts that's just over 13 amps and it will be expensive. But at 24 volts, that's over 16 amps. And that would be at 100% efficiency, which no amp does. And this amp at 24 volts is not going to get you that close to 100 Watts. Probably closer to 60 where the math and design work out. And you can see that very few of the recommendations actually suggest a power supply that is big enough. But because of the way these amps work and how the THD grows exponentially at higher watts, nobody really expects that you will get or want to run these at full load, which is why they recommend the power supplies that they do.Personally, from a price / efficiency perspective, try one of your old high quality PC power supplies at 12 volts and for smaller rooms you will be just fine. 12 volts will only give you about 20 watts per channel, but for the price you can't beat it, because most people have old PC's lying around anyway. There are plenty of articles on the web about how to jumper/switch the middle green wire to ground to make them turn on. Learn before you do though. Just pay attention to the amps rating of the power supply which is usually listed #although usually overstated# on the side. For all intents and purposes, the generally recommended "audio" power supplies are not much different from a good pc power supply other than the voltages/amps. I currently have a really beafy very clean switching PC power supply #just pay attention to the watts/amp math) where I can run four of these boards at the same time with some good sized active crossover speakers with plenty of power load to spare. And that is a lot of sound for very little money. But at some point you are better off just buying a Pioneer/Denon/Onkyo/etc. 7.1/5.1 THX certified receiver on clearance where they are required to pay attention to the power supply for you.
Answered by: Audiohack
Date published: 2014-03-05

Class D" or T" . Please explain?

Class D" or T" . Please explain? Which one is it? Manual says Class D, I heard class D is horrible for mids & highs but decent for Low end...Are Class T & D associated with ea other? Whats gong on?
Asked by: Dr Noob
This amplifier is class D. Class T refers to a tripath based chip amps and is similar, but still a separate class.When Class D first came out there were some sound quality issues, but the category has improved dramatically over the years and they are very comparable to a standard class AB amplifier these days.
Answered by: Chrisf
Date published: 2013-07-22

Exaggerated "Watts" specifications--Excessive THD+ Noise

How can an amplifier with TEN PERCENT THD+noise at rated output be advertised as "High fidelity, low distortion"; and "outstanding sound quality", when one-tenth of the output is garbage?The power spec at 1% THD+noise is only 64 watts. 1% is the de facto standard for clipping.The Japanese could build 100-watt amps with <0.3 THD+ noise, THIRTY YEARS AGO.Parts-Express should be ashamed of this product's advertising and rated specs. The Federal Trade Commission should put a stop to misleading product hype like this.
Asked by: Schurkey
And the Japanese amps that produced 100 watts at .03% cost how much in 1982? This amp with a power supply is $100, or $41.89 in 1982 dollars.Take the time machine back to reality, these amps are fun, and set up properly sound amazingly good.
Answered by: davemo
Date published: 2015-01-09


Do the changes to this amp allow bridging?
Asked by: blockp
The output stages of the amplifier are in a double ended configuration and can't be bridged. Page 6 of the manual states "never connect CH1_OUT-, CH2_OUT- together since they belong to different NETs."
Answered by: Stowbari
Date published: 2014-03-09

Hey guys,

Hey guys,Which potentiometers should I use to control volume on the 4x100W @ 4 Ohm TK2050 Class-T Digital Audio Amplifier Board?
Asked by: sitting bull
Just use some 10K pots in series with the input signal.http://www.parts-express.com/pe/showdetl.cfm?partnumber=023-530I have used many of these for misc. amp projects. I just get a little project box, rca female inputs/jacks, and the pot with knob....*Boom* a lil passive preamp (well not really a preamp but volume attenuation). I like this as its just the cd player and the amp, nothing in between to color sound. Simple and cheap. Good Luck
Answered by: Progneat
Date published: 2012-09-26
  • 2015-04-21T08:43CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.1
  • cp_2, bvpage2n
  • co_hasquestionsanswers, tq_33
  • loc_en_US, sid_320-335, PRD, sort_recentQuestionsFirst
  • clientName_PartsExpressInternational

Customer Projects

Customer projects that include: 4x100W at 4 Ohm TK2050 Class-T Digital Audio Amplifier Board

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

© 1996-2015 Parts Express, All Rights Reserved

Live Chat Software