Shipping and delivery
We are proud to offer international shipping services that currently operate in over 200 countries and islands worldwide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.
How do you ship packages?
Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.
Do you ship worldwide?
Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.
What about customs?
We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.
How long does shipping take?
Shipping time varies by location. These are our estimates:
| Location |
*Estimated Shipping Time |
| United States |
10-30 Business days |
| Canada, Europe |
10-30 Business days |
| Australia, New Zealand |
10-30 Business days |
| Central & South America |
15-30 Business days |
| Asia |
10-20 Business days |
| Africa |
15-45 Business days |
*This doesn’t include our 2-5 day processing time.
Do you provide tracking information?
Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.
My tracking says "no information available at the moment".
For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.
Will my items be sent in one package?
For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you have specified combined shipping.
If you have any other questions, please contact us and we will do our best to help you out.
Refunds & returns policy
Order cancellation
All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.
Refunds
Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:
- You do not receive them within the guaranteed time (45 days not including 2-5 day processing)
- You receive the wrong item
- You do not want the product you have received (but you must return the item at your expense and the item must be unused)
We do not issue the refund if:
- Your order does not arrive due to factors within your control (e.g. providing the wrong shipping address)
- Your order does not arrive due to exceptional circumstances outside our control (e.g. not cleared by customs, delayed by a natural disaster)
- Other exceptional circumstances outside the control of tech.diydynamic.com
*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on page.
If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.
Exchanges
If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.
Please do not send your purchase back to us unless we authorise you to do so.
Customer –
great product
J***t –
man I don’t even know what to say. I’ve read about these amp boards for the past couple of months. they get rave reviews whenever they’re tested or reviewed. you can find all the technical Data and graphs on ASR so I’m not gonna parrot those. what I am gonna say is that I’m pretty disappointed in my order. I purchased four of the 260-2-29a variants and one of the 480-1-29a variants. of the 5 amp boards I got not a single one of them has perfect craftsmanship. capacitors are bent every which way, the chip itself is mounted underneath and it’s secured by screws from the top. they silicone these to stop from messing with but it’s a slop job and looks bad. the heat sink is a nice addition and adds a lot of weight, making them feel higher quality but I just cannot get over how sloppily these are put together. they’ve been hailed as the highest quality TI amp but honestly the GHXamp look like they’re made to a better standard. of course this isn’t taking audio into account so idk 🤷♂️
Customer –
absolutely loving it Ron…
T***r –
This arrived very quickly. To my home in the US in 1 week. The build quality of the board is good. The heat sink attached to the bottom gives it a very solid feel. I have built 5 different TPA3255 boards. Until now on every one I have replaced the main electrolytic on the input side with 10uf cbb. I then bypassed all small electrolytic on the bottom of the board with film & foil and replaced the filter caps with higher uf and higher voltage caps. On this amplifier, I saw silmicII caps on the input side. These are very good electrolytic. I was worried because they lowered the total filtering on the rails. I used a 42v 9.5a supply and put 2 – 22,000uf caps between the smps and the amp board to add some reserve in case it was ever needed and a bit of extra filtering. I did no modifications to the amp module itself. it has only been playing 4 hours and it is already the best TPA3255 that I have built. I have a very nice pre amp and dac in front of it and this little amplifier is good
zahidislam2000@gmail.com –
Thank you for sharing your experience! It’s great to hear that the amplifier exceeded your expectations without needing modifications. Your detailed setup and thoughtful additions like extra filtering truly bring out its potential. We’re delighted it’s now your favorite TPA3255 build—happy listening and DIYing! 😊
Е***ч –
Thank you, Maestro… Sound worthy of Kings!
Customer –
I appreciated the build quality of the amplifier and the sound quality, this is the third amplifier I bought in 3 eaudio. Assembled a system with a DSP processor. Very happy with my choice. I recommend it to everyone.
y***i –
wow very good amp
Г***ч –
The workmanship is good. But the originality of the components is in doubt. I didn’t like the fact that the delivery was changed from 5ki to the post office of Russia. And the biggest drawback-The board does not start from 36 V. Although the operating voltage is declared 36-52 V. Must be recorded from 38 V and above. It turned out to be critical for me, the 36 V project did not fit😫. Now redo power😱.
zahidislam2000@gmail.com –
Thank you for your honest feedback! We apologize for the inconvenience caused by the voltage mismatch and delivery change. Your insights are invaluable, and we’ll work on addressing these issues to improve. If you need any assistance with your project adjustments, feel free to reach out!
S***v –
It is the second time I’m buying from 3e. Now it’s two mono amps in version B. I got more powerfull bass for my vintage 8 ohm Technics speakers. Hope to buy another two for my next project when it will be possible
zahidislam2000@gmail.com –
Thank you for your feedback and continued support! We’re thrilled to hear that the mono amps are delivering powerful bass for your vintage Technics speakers. Your next project sounds exciting, and we’re here to help when you’re ready for more amplifiers. Don’t hesitate to reach out if you need any assistance or recommendations. Happy DIYing! 😊