Question: This states it's a 2x4w amp. But at 12v and 2 amps it seems it should be more around 24-36 watts, and back says "100 watts". Thoughts?

The specs rate this amp at 18w per channel into 4 ohm speakers using a 12v 2amp power supply. They don't say if that is RMS or peak power. Forget AxV=W, even the led bulbs burn power. I'd expect 10-15w into some inexpensive speakers that aren't pushed to hard.

Can I use it as a preamplifier? I was thinking to connect the output to a poweramplifer step after this one.

No, the outputs are already amplified. They would blow the inputs to your Poweramp...if the inputs are rca connector and standard audio output.Guess I would ask why you would want to do this... Although some power amps do allow stereo output for input.... You would have to check the spec on your power amp to see if it allows amplified inputs.... They will usually be speaker terminal inputs for speaker wire. While this amp is nice, one should not expect it to shake your auto!

What size plug does this use and what is the polarity? Wiring to 12v auto batter not 110v home.

According to the manual the plug is described as: DC plug size: 2.1 mm x 5.5 mm DC input polarity: Center positive

Is it possible to hook Bluetooth up to this amp?

Indeed. I have $5 Bluetooth receiver I picked up at Autozone one day feeding it via a 3.5mm strereo (headphone) to RCA cord. It's pushing two 5.25 Pyle marine speakers in a splash down, DIY, mobile unit made from an old cooler. Sound is clean, especially after some tweaking with a good amp/equalizer app on my phone. Fishing is always better with tunes!

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Kinter MA170 12V 2 Channel Mini Digital Audio Power Amplifier for Car or Mp3 Without Power Supply

Product ID: 1105915

Details

Item dimensions L x W x H
4.87 x 1.62 x
Manufacturer
Kinter
Maximum Supply Voltage
14.4 Volts
Minimum Supply Voltage
12 Volts (DC)
Voltage
12 Volts

💡LED volume knob

🔊2x18W stereo power

🔋12V low power draw

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Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Small Amp, Big Sound, Zero Compromise!

BUILT TO ENDURE - Aluminum chassis with proven heat tolerance for reliable performance in any environment.
COMPACT POWERHOUSE - Delivers crisp 36W total output in a sleek mini design perfect for any space.
CUSTOM SOUND CONTROL - Adjust bass and treble to tailor your audio vibe with ease.
ENERGY EFFICIENT AMP - Consumes as little as 1.6W at max volume—jam longer without the power guilt.
VERSATILE CONNECTIVITY - RCA input compatible with MP3 players, car systems, and DIY audio setups.

The Kinter MA170 is a compact 2-channel digital amplifier delivering 18 watts per channel at 12V DC. Featuring an energy-efficient design with minimal power consumption, it supports RCA inputs for MP3 and car audio systems. Its aluminum build and LED volume knob combine durability with style, making it an ideal choice for DIY, home, or automotive audio upgrades.

Specifications

ASIN	B007TUSXEY
Best Sellers Rank	#16,764 in Electronics ( See Top 100 in Electronics ) #85 in Audio Component Amplifiers
Brand Name	Kinter
Customer Reviews	4.2 4.2 out of 5 stars (4,121)
Global Trade Identification Number	08850273109052
Included Components	Amplifier and instruction manual
Item Dimensions	4.87 x 1.62 x 4.62 inches
Item Weight	0.1 Kilograms
Manufacturer	Kinter
Material Type	Aluminum
Maximum Output Power	36 watts
Maximum Supply Voltage	14.4 Volts (DC)
Minimum Supply Voltage	12 Volts (DC)
Model	MA170
Mounting Type	Table Top
Number of Channels	2
Output Power	18 Watts
Package Type Name	Retail package
Part Number	MA170
Specification Met	Yes
UPC	714439615932 600748147571 849649090955 609224910524
Unit Count	1.0 Count
Voltage	12 Volts

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