Feature Products

WUZHI AUDIO ZK-AS21 2.1Channel TPA3255 Bluetooth Digital Power Amplifier Board

 
Features
1: Wide range of applications
2: Sleek and elegant design
3: Comprehensive app functionality
4: True stepless tuning, not digital multi-band adjustment.
5: One-turn mechanical switch to power off—no need to hold down the button and wait, making it quick and convenient.
Specifications
Product Name: 2.1-Channel Bluetooth Audio Amplifier Module
Model Number: ZK-AS21
Number of Channels: 2.1-channel (Left Channel + Right Channel + Subwoofer)
Input Methods: AUX + Bluetooth + USB Flash Drive + USB Sound Card (Use the rotary knob to switch modes and songs)
Bluetooth Version: 5.1
Amplifier Chip: TPA3255
Compatible Speakers: Left/Right Channels 30–220W, 3–8Ω; Subwoofer 30–350W, 2–8Ω
Output Power: Left/Right Channels ≤220W; Subwoofer ≤350W
Power Supply: DC 16–38V, ≥10A
Protection Mechanisms: Reverse polarity, undervoltage, overheating, overcurrent, and short-circuit protection (auto-recovery, no reboot required)
Switching Method: Mechanical switch (no need to hold down and wait)
Voltage Gain: 30dB
Product Weight: Net weight 346g, 408g with packaging
Product Dimensions: 141 x 131 x 27mm
Note: Sufficient output power is only achieved when the audio signal input is sufficiently strong and the power supply voltage/current is sufficiently high!
Higher power supply voltage results in greater output power; lower speaker impedance results in greater output power!
Please ensure the power supply capacity exceeds the amplifier’s actual operating power!
 
Package Includes
1 x 2.1-channel TPA3255 Bluetooth Digital Amplifier Board Module
1. We Ship to Worldwide
2. We ship your orders within 1-2 business days after the payment cleared.
3. Item shipped from China via china Post Airmail, reach most of the countries within 2 to 4 weeks.
4. Delivery time depends on destination and other factors, it may takes up to 20 days. If you don't receive
the item after 30 days,please keep in touch with us, we'll investigate and solve the delivery problem.
5. Import duties, taxes, and charges are not included in the item price or shipping cost. These charges
are the buyer's responsibility. Please check with your country's customs office to determine what these
additional costs will be prior to bidding or buying.
ShenZhen

1. We accept PAYPAL only.
2. Payment must be made within 7 days of auction closing (Unpaid dispute will automatically open when item
is not paid in 7 days).
3. PLEASE NOTE: SHIPPING&HANDING DOES NOT INCLUDE DUTIES, LOCATL TAXES OR ANY OTHER IMPORTATION FEES.
4. Please list your special requests (color, packages, value of declaration, etc.) in the EBAY NOTES SECTION
when you make payment

 

1. Customer satisfaction is our top goal. All products are quality checked. They are new and in good
condition when shipped to our customers. If product is defective or damage upon arrival, or wrong
product shipped, please keep in touch with us immediately. Returns accepted within 14 days of delivery date
and item must be in original new condition, not worn or altered in any way with attached tags & wrap.
Otherwise deal is final. Return shipping must be paid by buyer.
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