Hi, great product but it has a whistle sound thats annoying me, any way to fix?

Through the speakers I'm assuming. Generally I'd try it with different speakers, but it could be a bad unit. It sounds like interference.

How do you apply thermal paste to the mosfets? Does it require desoldering or is it just a screwdriver task?

Just a couple of screw drivers. Unscrew the silver phillips head screws on the front and back of the amp to permit you to remove the circuit board. Also unscrew the bigger black phillips screw on the side. That holds the clamp that braces the mosfets against the heatsink. When you pull out the board, you'll have access to the chip to apply the thermal paste.

How would I wire this for power in a truck since it only comes with the household plug?

The Product Description clearly states that it IS intended for automotive use! You DO NOT need an inverter; the unit runs on auto voltage; it has a power adapter which takes the 120 AC house current down to 9 to 14.4 DC. Just throw away the power adapter which comes with it and wire it directly to your vehicle (12-14 DC).

Could you power this amp by just the usb port? if i plug it into my computers usb port will it power it?

Actually, the amp's USB port is a 5v powered outlet for another device. In my application, I use it to power the stereo's bluetooth module. The amp itself requires 12v from either the included AC adapter or a 12v battery. Hope this helps.

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Lepai LP-168HA 2.1 2x40W Mini Amplifier + 1x68W Sub Output

Lepai LP-168HA 2.1 2x40W Mini Amplifier + 1x68W Sub Output

Product ID: 1065694

Details

Item dimensions L x W x H
4 x 7 x 1.8
Manufacturer
Lepai
Minimum Supply Voltage
9 volts
Mounting Type
Surface Mount
Voltage
14.4 volts

🔊2x40W stereo power

🔌Rear USB charging port

🎛️Bass, treble & sub crossover controls

€ 133.98

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Description

🎧 Elevate your desktop soundscape with power and precision!

DESK READY DESIGN - Compact footprint fits perfectly on your computer desk, elevating your workspace audio game.
BONUS USB CHARGING - Rear USB port keeps your devices powered while you enjoy premium sound.
SEAMLESS CONNECTIVITY - Supports both stereo RCA and 3.5mm inputs for versatile device pairing.
PRECISION SOUND TUNING - Front-panel bass, treble, and subwoofer crossover controls let you customize your audio vibe effortlessly.
POWER PACKED AUDIO OUTPUT - Delivers crisp 2x40W stereo and booming 68W subwoofer power for immersive sound.

The Lepai LP-168HA is a compact 2.1 channel amplifier delivering up to 40W per stereo channel and 68W to a dedicated subwoofer. It features adjustable bass, treble, and subwoofer crossover controls for tailored sound, multiple input options including RCA and 3.5mm, and a rear USB port for device charging. Designed for desktop and mobile use with a wide voltage range, it combines powerful audio performance with practical connectivity in a sleek, space-saving design.

Specifications

ASIN	B0070Z87YO
Best Sellers Rank	#110,921 in Electronics ( See Top 100 in Electronics ) #242 in Car Multichannel Amplifiers
Brand	Lepai
Brand Name	Lepai
Customer Reviews	3.8 out of 5 stars 326 Reviews
Global Trade Identification Number	00844632091506
Item Dimensions	4 x 7 x 1.8 inches
Item Highlight	Perfect For Computer Sound Systems, Power Supply Included, Stereo RCA And 3.5 mm Inputs, Bass/Treble/Sub Crossover Controls
Item dimensions L x W x H	4 x 7 x 1.8 inches
Manufacturer	Lepai
Material Type	Plastic
Minimum Supply Voltage	9 volts
Model	LP-168HA
Mounting Type	Surface Mount
Number of Channels	3
Number of Items	1
Part Number	LP-168HA
Specification Met	CE, FCC
UPC	624152684378 616204179284 818019161557 844632091506
Unit Count	1 Count
Voltage	14.4 volts
Warranty Description	90 days

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TrustScore 4.5 | 7,300+ reviews

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€ 133.98

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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