XY-W50H HIFI 50W*2 Stereo bluetooth 5.0 Digital Power Amplifier Board Module with WIFI Timing Clock BT5.0 Audio Module DC8-24V

  Availability: In Stock
  Shipping: Free Airmail 
  Estimated Delivery: 
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  •   Shipping Methods

    Handling Time

    Before we can ship your order, we prepare your products, do strict quality-control tests and carefully package the items. The time it takes to prepare your items for shipping is separate from the delivery time. It usually takes 1-3 business days to ship out .

    Shipping Methods

    You can choose the preferred shipping method on the cart page during the checkout process. We offers 3 international shipping methods:

    1. Airmail – Free untracked economy shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
    2. Airmail Registered – Tracked shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
    3. Expedited Shipping – Express shipping with courier delivery (DHL, UPS, FedEx, TNT)

    Delivery Time

    Airmail and Airmail Registered Area Estimated Delivery Time
    United States, Canada 7-25 business days
    Australia, New Zealand, Singapore, United Arab Emirates 10-25 business days
    United Kingdom, France, Spain, Germany, Netherlands, Japan, Belgium, Denmark, Finland, Ireland, Norway, Portugal, Sweden, Switzerland 10-25 business days
    Italy, Brazil, Russia, South Africa 10-45 business days
    Other countries 10-35 business days
    Expedited Shipping 3-10 business days to Worldwide

    Note: If you choose an expedited shipping, please remember to leave a valid contact number, this is required for expedited shipping’s courier delivery.

  •  Returns & Refund

    Last updated October 05, 2022


    If you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund within 15 days from delivery date. All returned items must be in new and unused condition, with all original tags and labels attached.

    Return Process

    To return an item, please email our customer service at sales@alexnld.com to obtain a Return Merchandise Authorization (RMA) number. After receiving a RMA number, place the item securely in its original packaging, and mail your return to the following address:

    Alex NLD
    Attn: Returns
    RMA #
    HaGiborim St 8
    Tiberias, 14388

    Please note, you will be responsible for the return shipping charges. We strongly recommend that you use a trackable method to mail your return.

    All customers should contact us and obtain Return Merchandise Authorization (RMA) number before sending anything to us. We will not be responsible for returned item(s) without notifying us in advance.


    After receiving your return and inspecting the condition of your item, we will process your refund to the credit / debit card or PayPal account which was used to place the original order.

    Please allow at least seven (7) days from the receipt of your item to process your refund. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your refund has been processed.


    If an item is found damaged or defective on receipt, we kindly ask you to contact us within 15 days from the delivery date to arrange a refund or exchange without physical return of the item.

    Please provide us with following:

    1. Photos of the front and back sides of the packaging box;
    2. A photo, video or screenshot of the defective item or the defective part of the parcel.

    Our customer service team will communicate with you to arrange a refund or reshipment without physical return of the item.

    Warranty & Repair service

    If any of the items you have purchased from us is found defective within 1 year from receipt, you are entitled to a repair under warranty. Please kindly provide us with evidence photos or videos of the defective item. After providing such information to our Customer Service team  and the problem is acknowledged, you can send the items back to us for a repair.

    Note:  Please be aware, we do not cover the cost of the returns fees in  warranty & repair service.

    Order Cancellation

    If you want to cancel an order within 24 hours from confirmation of the payment, you will be entitled to a full refund. It is still possible to cancel an order after 24 hours, provided that it has not yet been shipped. If an order has been shipped, it’s impossible for us to cancel or modify it anymore. If you still want a refund, you required to return the item on it’s arrival.


    If you have any questions concerning our return policy, please contact us at:

    +972 054-536-2888



Brand: XINYI Sini Audio Product
Model: XY-W50H
Product name: 50W+50W Bluetooth power amplifier board+WIFI clock
Power supply: DC8-24V/2A or more
Clock function: WIFI time service
Bluetooth version: 5.0
Audio input: Bluetooth+AUX+U disk+USB sound card
Audio output: Passive speaker+ 3.5mm interface stereo output
Volume adjustment: high-end encoder knob adjustment, smooth feel
Output power: 50W*2
Adapted speakers: 10W-100W /4Ω-8Ω

Protection mechanism: static electricity, overcurrent, short circuit, overheating protection
Unique function: support Sinilink-APP control
Product size: 72mm*45mm*31 mm
Product weight: 115g
Note: Support 4 ohm speakers, power supply 12V and below
Support 8 ohm speakers, power supply 24V and below

1. High-Fidelity Sound: The XINYI Sini Audio amplifier board uses bluetooth 5.0 technology for high-resolution wireless sound.
2. Multiple Audio Inputs: It supports bluetooth+ AUX+U disk+USB sound card input, ensuring versatility and convenience.
3. Clock Function: It also features a built-in clock function supported by WIFI time service.
4. Robust Protection: Equipped with protection mechanisms against static electricity, overcurrent, short circuit, and overheating.
5. Smart Control: The amplifier board supports Sinilink-APP control for easy operability.

Package Include:
1x Product Bare Board kit

Precautions for product use:

Heat sink installation:
When assembling, pay attention to the installation of the heat sink. The metal shell of the heat sink must not be in contact with surrounding components to avoid short circuits.

Audio input mode switch:

This product is powered on by default in Bluetooth mode when there is no external audio device mounted; if an external playback device is mounted, such as an AUX or USB flash drive, the default is AUX or USB flash drive playback mode after power on; the device is first inserted in the playback process. In principle, for example, if you insert AUX during Bluetooth playback, you will immediately switch to AUX playback; if you insert a USB flash drive, you will immediately switch to USB playback; the audio mode can also be switched by APP, which is very convenient.
When playing AUX, try to choose AUX cable with shielding layer to reduce noise,
Use MP3 format as much as possible for U disk playback. The sampling rate of WAV format must be within 44100Hz. If the sampling rate is too high, the playback may not be possible. When using the USB sound card function, you can connect the computer with a USB data cable without installing any drivers. Most computer systems will switch the USB sound card by default. If it cannot be automatically switched, you can manually select the switch,

Power selection:

This product has a power supply range of 8-26VDC and is compatible with standard 5,5-2.1/2.5 power adapter plugs. It is recommended to use a 12V/24V standard power adapter with a current output of more than 2A.
1)The size of the power supply is related to the power of the speaker used. For example, if you use an 8 ohm 50W speaker, use a 24V power supply, and the current is at least 4A. If the current is too small, the sound may be stuck. Reduce the volume and reduce the output power to solve this problem.; Use 4 ohm speakers, the power supply is controlled within 20V, too high voltage may cause serious heat of the power amplifier.
2)Although the power supply below 9V can work, the output power is very small, so it is recommended that the power supply voltage is above 9V, and the 12V/24V standard power supply is recommended.
3)The power supply voltage cannot be higher than 26V, higher than 26V, the circuit board will be burned.
4)If the power amplifier board restarts after the volume is turned up during playback, it is caused by insufficient power supply, just replace the power supply with a larger output current.

Speaker selection:

The power amplifier of this product can continuously output 50W*2 power, and speakers from 10W to 100W can be driven, It is recommended to use 8 ohm or 4 ohm speakers. If the power is less than 50W, reduce the power supply voltage appropriately (for example, 12V power supply) or lower the playing volume; for speakers greater than 50W, the higher the power supply voltage, the better (within 26V).
If there is a ‘hiccup’ phenomenon when playing music speakers, first consider the insufficient power supply and use a larger power supply; second, consider the power amplifier overheating protection, strengthen heat dissipation or reduce the playback volume.
If multiple speakers are used in parallel, the total impedance of the speakers in parallel must be controlled above 4 ohms. If the impedance is too small, the power amplifier will easily enter the over-current protection state.

Signal problem:

This product uses a PCB antenna, and the visible distance of the connection can reach 15 meters without obstruction, If you can’ tfind Bluetooth when you use it, or you can1 t connect to it, consider the signal problem.
1)Be sure to stay away from the router when using it.
2)Avoid using on the metal table, which will affect the PCB antenna signal
3)If you modify the speaker, if it is a metal shell, be sure to lead the antenna out of the shell. The metal will shield the signal.


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