Amplifier Class D 2.1 CH TPA3255 Bluetooth 5.1 Hifi Amplifier ZK-AS21

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Product parameters:
Product Name: 2.1 ch BT Class D amplifier
Product Model: ZK-AS / YS-AS
Amplifier Chip: TPA3255/3251 ORINAL CHIPS
OP AMP : 7 low-noise NE5532
Channels: 2.1 Ch
Output power: 2X 220W, Subwoofer 350W
Audio Input: AUX + BT+USB disk + USB sound card
BT Version: 5.1
Switching Mode: Mechanical switch(without long press and wait)
Adaptive Power supply: DC16~38 V , 7A-20A
Adapter Speaker:
L&R channels 30-220W,3-8 Ohm
Subwoofer 30-350W, 2-8 Ohm
Protection Mechanism:
Protection against reverse connection, undervoltage, overheating, overcurrent and
short circuit (automatic recovery without restart)
Product Features:
Mechanical volume knob, turn the knob to switch the machine on and off,
no need to press and wait to see the indicator light. True stepless tuning.
Support ANDROID APP, Support to modify BT name, set BT password,
prompt tone, volume adjustment / switch prompt tone, Lullaby + timed shutdown, sound effect adjustment,
support to customize 10 sound effects
BT name modification steps:
[enter a new BT name] ? [click set button] ? [system automatic restart] ?
[cancel pairing of mobile BT with the original BT name] ? [find a new BT name and re pair]
BT password setting steps:
Method 1:
[turn on BT password switch]?Use default password 1111
Method 2:
[turn on BT password switch] ? [enter password] ? [click the setting button] ?
[the system will restart automatically] ? [cancel pairing, and
you will be prompted to enter password when connecting again]
ANDROID APP download link: .pgyer/f9KC