Name: Sony XM-S400D
Brand: Sony
SKU: xms400d
Price: 148.00 USD
Availability: InStock
Rating: 5.0000 (2 reviews)

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• 45 watts x 4 channel @ 4 ohm
• Total RMS Power: 180 watts
• Class D 4 ohm Stable 4-Channel Amplifier

Learn more about the xms400d

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Product Highlights

• 45 watts x 4 channel @ 4 ohm
• Total RMS Power: 180 watts
• Class D 4 ohm Stable 4-Channel Amplifier

Description

Authorized dealer

Sony XM-S400D

Power up your in-car sound with the XM-S400D stereo amplifier. Each of the amplifier’s 4 channels deliver 100W of dynamic audio, while low and high pass filters separate the frequency range to ensure a more accurate sound stage. The speaker-level input makes installation easy, even with integrated head units.

Product Details:

S Series Class D 4 ohm Stable 4-Channel Amplifier
RMS Power Rating:

4 ohm: 45 watts x 4 channel
2 ohm: 45 watts x 4 channel

Total power output: 180 watts
LED Power/Protect Light
Speaker-level (high-level) inputs
Signal sensing remote turn-on
Low and high pass filters for accurate sound
Overload protection circuit and speaker level input
Input sensitivity: 1 - 8 volts
Frequency Response: 20 - 20000 Hz
Total Harmonic Distortion (THD): 0.08%
Signal to Noise Ratio: 100 dB
Fixed high-pass filter: 120 Hz @ 12 dB/oct
Fixed low-pass filter: 120 Hz @ 12 dB/oct
Fuse Rating: 15A
12 AWG gauge amplifier wiring kit is recommended for installation
Dimensions: 7-1/4" L x 2-1/2" W x 1-1/2" H
Authorized Internet Dealer
1-year Manufacturer's Warranty
MFR #: XM-S400D

Specifications & Details

Key Features

Amplifier Key Features

Compact Design
Speaker Level Inputs

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

45 watts x 4 channel

RMS Power @ 2 ohms

45 watts x 4 channel

Power Specifications - Full Range Channels

Peak Power @ 4 ohms

100 watts x 4 channel

Amplifier Specifications

Series

S Series

Amplifier Class

Number of Channels

4-Channel

Total Peak Power Output

400 watts

Total RMS Power Output

180 watts

Maximum Input Gauge Size

12 AWG

Minimum Impedance Unbridged

4 ohm

Minimum Impedance Bridged

Not Bridgeable

Frequency Response

20 - 20000 Hz

THD at Rated RMS Power

0.08%

Speaker Level Inputs

Yes

Preamp Outputs

Built-in Crossover

Low-Pass (LP)
High-Pass (HP)
Full (AP)

High-Pass Crossover Frequency

0 - 120 Hz

Low-Pass Crossover Frequency

0 - 120 Hz

Signal-to-Noise Ratio

100 dB

Remote bass/level controller

Fuse Rating

15A x 1

Total Fuse Rating

Strappable

Amp Bluetooth Connectivity

Hi-Res Certified

Low-Level Input Sensitivity

1 - 8 volts

High-Level Input Sensitivity

1 - 8 volts

What is in the box?

Paperwork

User manual
Warranty/Registration card

WITB: Amplifiers

Amplifier
Mounting screws (4)
High-level input wiring harness w/ molex connector

Warranty and Return Policy

Parts Warranty Duration

1 year

Labor Warranty Duration

1 year

Warranty Provider

Manufacturer

Customer Ratings & Reviews

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By feature average rating

Durability		5
Value		5
Features		3
Design		5
Usability		5

Customer Reviews

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Powerful little brick!

My desktop setup is: Pioneer mvh-x580bs, this amp and a 30amp power supply. It's a home audio setup using car audio equipment.
I made bookshelves using 6.5" Silver Flute and NVX xsptw tweeters. The Pioneer deck has active crossovers (2 way plus sub).
It all sounds absolutely amazing! The bookshelves are .46 cubic feet each with a port. I do have an 8" powered sub to fill in the lows.
This little amp is so clean. Only gets very warm, but not too hot to touch. I don't worry about it as it has thermal protection included. There is no Gain control. I don't care, the amp sounds great.
I plan on putting a video demonstration on youtube soon.

Cons: Crossover is not useful at 120hz.It's not bridgeable either.

By Norb on April 5, 2017

found this helpful.

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By Austin on April 26, 2025 Checkmark Icon

Verified purchase

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Sony XM-S400D

$148.00

Product Highlights

Description

Sony XM-S400D

Product Details:

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