Question 1

what kind of power supply does this come with? will i need to buy standard U.S. 110 wall plug power supply??

Accepted Answer

This does not come with a power supply. I bought a 12V 5A wall wart power supply here on Amazon and works great.. This will work with a 12v 2A power supply but a 12v 5A power supple give you more power you can defenently hear. Do not use any power supply under 2A rating. It will not work.

Question 2

Does the low pass crossover for the bass control also serve as the high pass control for the main channels, or is it set at a fixed point?

Accepted Answer

I don't know the answer exactly. But... I am using a midrange Dayton Speaker and 4 dayton 40w Exciters. 2 Per L/R channel to form a 8 ohm speaker. I would not use 4 ohm speakers with the amp. It works but over drives the speakers. As you tune up the frequency of the midrage speaker you hear more of the midrange which is the voice. Voice does come out of the Exciters but at very high fequencies. Together this combo sounds rich and a full boddied sound. You have to play around with the setting to get the right effect for your tast.

Question 3

Pairing issues

Accepted Answer

Not with mine.

Question 4

will this work with a passive subwoofer (meaning a non powered subwoofer)? does does the subwoofer need to be powered?

Accepted Answer

It should work in principle.  The output for the subwoofer is powered, just like the other outputs it has a speaker connector.  What I couldn't tell you is how well it will drive the subwoofer since I don't know the characteristics of the subwoofer.  The subwoofer output is listed as 100W but I would take that figure with a grain of salt.  I did use that amp with a conventional speaker acting as a sub and it worked OK for my expectations.

ASIN	B08HRG75NV
Brand Name	UwayKey
Customer Reviews	4.3 4.3 out of 5 stars (202)
Item Dimensions	13 x 12 x 2 centimeters
Item Weight	165 Grams
Manufacturer	UwayKey
Material Type	PCB
Maximum Supply Voltage	24 Volts
Minimum Supply Voltage	12 Volts
Model	ZKTB21
Mounting Type	Surface Mount
Number of Channels	2
Output Power	200 Watts
Package Type Name	BOX
Part Number	ZKTB21
Supply Current	5 Amps
Unit Count	1 Count
Voltage	24 Volts (DC)

UWAYKEY Bluetooth Amplifier Board 2.1 Channel Class D AMP Module with Dual TPA3116D2 Chip

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