Can anyone provide specs on thd, snr, frequency response, etc?

Specifications: • Power output: 2 x 20 watts RMS • Speaker impedance: 4-8 ohms • SNR: >102 dB • Input impedance: 47k ohms • Frequency response: 20 Hz - 22 kHz • Input sensitivity: 200 mV • Minimum THD: <0.1% • Dimensions: 4.72" D x 5.79" W x 1.65" H.

To realize the full potential of this amp (>20 watts per channel), we recommend a power supply. How is this done?

The full statement they make is, "To realize the full potential of this amp (>20 watts per channel), we recommend a power supply that is capable of producing 60 watts of total output." What they are getting at is that the included power supply is a 36-watt supply (12V X 3A = 36W). To achieve a higher power output, use a power supply greater than what they provide. If you stick with using a 12V supply and you want 60 watts out of it, you need a 12V 5A supply (12 X 5 = 60). However, you don't need to limit yourself to a 12V supply. The unit will operate with a power supply voltage between 4.5 – 24 Volts DC, so any power supply within that range will work if its current (amps) will allow 60 watts. To determine that, divide 60 by the voltage and that will tell you how many amps it needs to deliver. For example, a 5-volt supply would need to deliver 12 amps (60 / 5 = 12), a 24-volt supply would need to deliver 2.5 amps (60 / 24 = 2.5), a 15-volt supply would need to deliver 4 amps (60 / 15 = 4), and so forth. Just make sure the power supply has the same 2.1mm x 5.5mm plug as the original to fit the input of the amp.

Is this amp bridgeable?

No, this amplifier is not bridgeable.

Can I just cut the ac plug head off and wire the plug directly to my boat's 12v electrical system?

You can cut the cable off the power supply and use it, but why not just buy a 2.1x5.5 plug, wire it yourself and save the power supply for something else?

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Item dimensions L x W x H	12.2 x 14.5 x 4.3 Centimeters
Voltage	12 Volts
Maximum Supply Voltage	12 Volts
Mounting Type	Surface Mount
Brand	Kinter
Number of Channels	2
Package Type Name	Box with Blister Pack
UPC	651814994421
Model number	K3118
Item Weight	454 g
Product Dimensions	12.19 x 14.48 x 4.32 cm; 453.59 g
Item model number	K3118
Item Height	1.7 Inches
Item Width	5.7 Inches
Output Wattage	20 Watts
Power Source	corded electric
Are batteries included?	No

Kinter K3118 Texas Instruments TI Digital Hi-Fi Audio Mini Class D Stereo Amplifier with 12V 3A Power Supply Black

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