does this have to be powered from the battery or can it be powered from head unit?

Needs external power (not from head unit) from battery. I wired mine to fuse block.

will this amp handle 350 watt speakers or do i need a higher amp?

350 watt speakers probably have lower sensitivity which means a mismatch for this low wattage amp. Search and read about speaker sensitivity which is measured in dB.

What wires are required for a 2016 Jeep Grand Cherokee with base six speaker radio?

don't know I ran all new wires for four speaker system.

Is the outside of this amp made of aluminum?

I believe it is thin steel plate.

Xms400d 4 Channel Micro Amplifier Black

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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1252 zł

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In stock

Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎵 Elevate your drive with Sony’s micro powerhouse—sound that moves you, space that frees you.

RELIABLE SAFE - Advanced protection circuit with indicator ensures your amp stays cool and damage-free.
SLEEK STEALTHY - Compact design fits seamlessly behind your car’s dashboard—maximize sound, minimize space.
PLUG PLAY SIMPLICITY - High or low-level input connections with hi-level sensing power on for effortless installation.
TAILORED SOUND CONTROL - Built-in low-pass and high-pass filters let you fine-tune audio frequencies for perfect clarity.
POWER THAT PACKS A PUNCH - 45 watts continuous output per channel delivers crisp, immersive sound without distortion.

The Sony XMS400D is a 4-channel micro amplifier delivering 45W per channel with Class-D efficiency, featuring built-in low-pass and high-pass filters for precise audio tuning. Its compact design fits easily behind car dashboards, offering versatile input options and a protection circuit for safe, reliable performance. Ideal for upgrading in-car sound without sacrificing space or complexity.

Reviews

E**N

12.10.2025

S**.

13.07.2020

T**X

10.06.2025

S**M

15.08.2025

D**C

14.08.2025

D**S

7.05.2025

M**E

27.03.2026

J**O

26.06.2025

V**S

8.01.2022

A**R

11.03.2026

K**E

16.05.2018

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

1252 zł

Duties & taxes included

In stock

Sold byAmazon PolandDelivered 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 Poland.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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ASIN	B01FUFE33O
Best Sellers Rank	#34,350 in Electronics ( See Top 100 in Electronics ) #66 in Car Multichannel Amplifiers
Brand	Sony
Built-In Media	4 Channel amplifier, Harness, screws, mounting tabs, instructions
Customer Reviews	4.0 4.0 out of 5 stars (134)
Item Weight	1 Pounds
Manufacturer	Sony Mobile Communications, (USA) Inc
Mfr Part Number	XMS400D
Model Number	XMS400D
Unit Count	1.0 Count
Warranty Description	1 year

XMS400D 4 Channel Micro Amplifier (Black)

Description

Specifications

Reviews

Common Questions