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ZK-ST21 2.1 Channel Bluetooth Amplifier Board 100W+100W+200W Subwoofer TPA3221 Support Bluetooth AUX U Disk Sound Card
30
Shipping to: United States |
Express delivery: 7-12 business days |
Standard delivery: 15-25 business days
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Return PolicyFree Gift
Welcome to Roymall, your professional website for purchasing premium department store gifts. We highly value and appreciate your support, and we want to express our gratitude by adding an extra touch of excitement to your purchases. When you shop with us, you not only get to enjoy high-quality products that enhance your lifestyle, but you'll also receive an exclusive free gift with every order you place. Ready to explore our collection and find your perfect gifts? Browse our selection of premium department store items, place your order, and look forward to the excitement of your free gift arriving alongside your purchase.Shipping Policy
We will work hard to deliver items to you after receiving your orders and make sure they arrive safely. Delivery details will be provided in your confirmation email.In most cases, orders are processed within 2 days.Under special circumstances, it will be delayed as follows: When you place an order on Saturday, Sunday or public holidays, it will be delayed for 2 days..Normally, it needs 5-7 working days (Monday to Friday) without being affected by flight delay or other environmental factors..Because our shipping service is worldwide so the delivery times will depend on your location so it may need a few times and please wait patiently if you are in remote districts or countries.1. Return & Exchange Policy
We only accept items purchased from roymall.com. If you purchase from our local distributors or other retailers, you cannot return them on our side. Final sales items or free gifts are not acceptable for a return. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.After receiving return instructions from us, please package up your returned items and drop your package at the local post office or another courier.We will process your return or exchange item within 3-5 working days after we receive it. The refund will be processed and credited automatically to your original method of payment.No returns or exchanges can be accepted if the product was custom produced, including custom size, custom color, or custom printed.Need more help, please contact us. service@roymall.com or Whatsapp: +8619359849471
2.Refund Policy
You'll get a full refund or 100% store credit after we receive the returned package and check it. The refund will be processed and credited automatically to your original method of payment. Please note that shipping costs and any duties or fees are not refundable. The extra shipping costs are non-refundable once the package has been shipped. You are responsible for paying these fees and we’re unable to waive or refund them, even if the order is returned back to us.Once we received and confirmed your returned item, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.If you have any problems regarding the refund process, please contact us. service@roymall.com or Whatsapp: +8619359849471
Features:1. Adopting high-power digital power amplifier specific inductance, high current, low magnetic loss, low heat generation, using oxygen free copper wire to improve sound quality, and magnetic shielding mechanism to resist electromagnetic interference.2. Equipped with two TPA3221 chips, it supports 2.1 channel Bluetooth digital amplifier 100W+100W+200W high-power.3. Subwoofer expansion port, supporting the installation of 1602 and 3002.4. Multiple expansion ports, capable of connecting to microphone front stage board reverb input or output, convenient to use.5. Equipped with protection mechanism, input undervoltage, input anti reverse connection, overheating, overcurrent, and short circuit protection.Parameter:Product name: 2.1 channel BT amplifier board 100W+100W+200WProduct model: ZK-ST21Adapted power supply: The working voltage range is 12-30VDC, and it is recommended to use a DC power supply with a voltage of 24V-28V and a current of 10A or above.Maximum power: left or right channel-- 105W@30V , 4 u03a9; 55W@30V , 8 u03a9. Subwoofer-- 208W@30V 2 u03a9; 105W@30V , 4 u03a9. In short, the higher the voltage, the smaller the resistance, and the greater the output power.Adapted speakers: left and right channels, supporting speakers up to 3-8 u03a9 and 100W; The subwoofer supports speakers up to 2-8 u03a9 and 200W.BT chip: JieLi 5.1, transmission distance of 15 metersInput method: BT+AUX+USB drive+sound cardNumber of channels: 2.1, left channel+right channel+subwooferPower amplifier chip: Two TI original TPA3221Protection mechanism: Input undervoltage, input anti reverse connection, overheating, overcurrent, short circuit protection.Product size: 121x100x25mmPackage include:
Type 1:1 x Amplifier board
Type 2:1 x Amplifier board
1 x Shell kit
Type 3:1 x Amplifier board external lead type
Attention:
1. Shipping does not include power or audio cables.2. Install external antenna (special scenario):2-1. The boards are all equipped with onboard antennas, with a normal distance of 10-15 meters. If they are installed in a metal shell (which will block the signal) or increase the Bluetooth distance (20-30 meters), external antennas will be used.2-2. Customers are required to purchase 2.4G antennas (antenna extension cables, antenna rods) on their own, and this product does not include external antennas.
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01/08/2024
As expected, excellent product.
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0A:No antenna includesAnswered by Wrixlewas on 16/04/2024Helpful (0)
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