AD 18 is a small full digital class d bluetooth amplifier built-in headphone amplifier supports subwoofer output.Connect it to your computer and use it to drive your headphones with an amplifier or to power your passive speakers(4ohm speaker produces 80Wx2 output power).Sophisticated matting aluminum housing reduces interference. Patented SDB sound and +-8 level treble and bass adjustment. Independent headphone amplifier design and advanced DSP technology makes the unit more desirable.
Amplifier Chip: Using TAS5508C for digital signal DSP processing and Pre-Amp.TAS5342A for digital signal rear-AMP. It will be through LC filter and then send to amplifier output jack.
Digital Receiving Chip:CS8422.It receive optical and coaxial signal and all signal transfer.
USB chip:TAS1020B. Supports stereo sound 24 bit/96 kHz.For much better sound, we use SDPI output instead of internal DAC output design. Strong anti-interference ability and More High-Fidelity.
HP Amplifier Chip:MAX97220A. Dual-OP amplifier:NE5532 with High efficiency low noise.
Analog/Digital converter IC :CS5341,Accurate to 24 bit 48kHz.Convert AUX signal to digital signal. Then digital signal processing by CS8422
Type: Full digital decoding amplifier
Input port: USB/AUX/3.5mm Coaxial and Optical 1/Bluetooth/Optical 2
Output Port: Amplifier output port/3.5mm Headphone port/Subwoofer
Output power:80W x 2
SNR(Signal to Noise): 90dB
Output consumption: 50W
EQ adjustment: 7
Headphone output(32ohm): 53mW & THD=0.04%
USB sampling rate: 24bit 96kHz
Optical sampling rate:44.1kHz-192kHz
Coaxial sampling rate:44.1kHz-192kHz
Treble adjustment range: ±8db,Bass adjustment range:±8db
Net Weight: 572g
Machine Size: 172*51*85mm
Maximum Power Per Channel:
USB sampling rate:
HP amplifier chip:
Analog/digital convertor IC:
Power amplifier chip:
Digital receiver chip:
SHIPPING AND DELIVERY
We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. 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:
*This doesn’t include our 2-5 day processing time.
||*Estimated Shipping Time
||10-30 Business days
||10-30 Business days
|Australia, New Zealand
||10-30 Business days
|Central & South America
||15-30 Business days
||10-20 Business days
||15-45 Business days
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've 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
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.
Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:
- If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
- If you received the wrong item you can request a refund or a reshipment.
- If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.
We do not issue the refund if:
- Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
- Your order did not arrive due to exceptional circumstances outside the control of PDK Electronics (i.e. not cleared by customs, delayed by a natural disaster).
- Other exceptional circumstances outside the control of https://www.pdkelectronics.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 Contact Us 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.
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.
A few reasons why buy from us:
We try our best to make your shopping experience not only pleasant, seamless and hassle-free, but also secure.
Enjoy flexible international shipping services that currently operate in over 200 countries across the world.
It's okay to change your mind! You can send your order back for a full refund, we've got you covered with our full Buyer protection.
Brand new products are available on a regular basis.
We don't want you to choose between the best value and the best service. That's why we offer competitive pricing.
EXCELLENT CUSTOMER SERVICE
Knowledgeable and professional support team is always happy to help you.
Check your order status online. As easy as that!