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.
d***r –
I selected this preamp based on the manufacturer (Aiyima) and the tube type (6A2). I connected it in front of a solid state stereo amplifier, and it made a world of difference in the sound quality. The 6A2 tubes bring a warm, enveloping quality to the sound, very much like a vintage tube stereo I used to have. The improvement in tone is almost unbelievable, especially given the low cost of this preamp. I tried it with another home theater amp and the improvement was equally good. This is an easy choice for anyone looking to upgrade their current audio system. It requires 12v DC. Easy to install, sounds great, and very affordable. Shipping was fast and the product arrived in perfect condition.
g***r –
Спасибо!
B***d –
Livraison avant la date initiale, colis ok , préamplificateur ok après déballage . Après branchement il fonctionne parfaitement et le son est plus clair et plus détaillé, je recommande ce petit appareil.
S***t –
Przedwzmacniacz został dostarczony mi w deklarowanym czasie dostawy i działa prawidłowo. Wykonanie oceniam na poziomie bardzo dobrym. Jeśli chodzi o walory brzmieniowe – przy zastosowaniu zasilacza liniowego 12V. 4,5A oraz lamp GE 5654W) dźwięk jest czysty, klarowny, szczegółowy ale łagodny, spokojny i głębszy w całym paśmie, bez “kłujących” wysokich tonów czy dudniących niskich tonów, Szczególnie wspaniale brzmi muzyka akustyczna i głosy ludzkie. Nie zauważyłem szumów czy zniekształceń dźwięku. Jestem bardzo zadowolony z zakupu tego przedwzmacniacza.
zahidislam2000@gmail.com –
Dziękujemy za szczegółową opinię! Cieszymy się, że przedwzmacniacz spełnił Twoje oczekiwania zarówno pod względem jakości wykonania, jak i brzmienia. To wspaniale, że muzyka akustyczna i wokale brzmią wyjątkowo dobrze. Życzymy dalszych przyjemnych odsłuchów!
a***r –
생각보다 음질이 좋습니다 ^^
K***y –
El Productora functions perdectamente, no tiene ruidos, llego bien embalado y antiempo, puedo recomnedarlo 100%,
Customer –
Tested. Working great.
J***M –
모드도 있어서 생각보다 잼나네요. 생각보다 성능이 너무 멀정함.
L***i –
The sound improve a lot the vocal very clear very nice tiny tube pre amp love it so much
7***r –
At reception I installed it with the GE5654W tubes that I already I had. This device is high fidelity, in the sense it doesn’t degrade the sound between my Topping D10s DAC and my Topping TP31 amplifier that drives a pair of BC Acoustique Tibre. However I must say that the change is definitely not night and day. Most people wouldn’t notice the difference if you switched from without- to with- on the fly, keeping it at unity gain in the signal chain. It may be clearer on the bass side – less mud in the low mids. But really, a 5% difference at most. All in all, I am happy with my purchase as I picked it just for level-matching between recordings before the amplifier stage (those 80’s-90’s CDs were less loud than today’s masters. But they had more dynamics).
zahidislam2000@gmail.com –
Thank you for sharing such a detailed review! It’s great to hear that the device integrates well with your setup and maintains high fidelity. Your insights on its subtle improvements, especially in bass clarity and level-matching, are very valuable. We’re glad you’re happy with your purchase!
Customer –
제 스피커가 클래스ab인데 소리가 좀 거칠어서 이걸 달아보니 소리가 부드럽고 따뜻한 느낌이 드네요 추천해요.
S***m –
전원 아답터와 케이블이 포함 안되어 당황스럽지만 턴테이즐 음질은 확실히 개선. 구매에 전원아답터 미포함 꼭 확인하고 구매바람. (이게짜증)
u***r –
Muy buen priducto. Los tubos trabajan a 130v con alimentació de Vcc de 13v. No distorsiona nada. Aguanta 4Vin y da 13,2 Vout, sin ninguna distorsiona. RCA de entrada saluda MUY endebles
zahidislam2000@gmail.com –
¡Gracias por tu comentario! Nos alegra saber que el producto cumple con tus expectativas en calidad de sonido y rendimiento. Tomaremos nota sobre las entradas RCA para seguir mejorando. 😊
C***z –
muy bueno
M***t –
Outstanding quality unit. Sounds great.
s***s –
안전하게 잘 포장되어서 도착. dx3 pro+, aiyima A07 Max 사이에 프리앰프로 끼웠습니다. 음색과 출력이 향상되었습니다. 가성비 깡패이네요.
zahidislam2000@gmail.com –
감사합니다! 안전하게 도착했다니 다행입니다. 음질과 출력이 향상되었다니 정말 기쁩니다. 가성비 좋은 선택이 되셨길 바랍니다!
a***r –
Great budget preamp
M***k –
Fantastic ! Very good sound quality !