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Home » PRODUCTS » Product Spotlight: Sony XM-4ES Mobile ES 4-Channel Power Amplifier
Sponsored Post

Product Spotlight: Sony XM-4ES Mobile ES 4-Channel Power Amplifier

July 27, 2022 By 1sixty8 media

Sony XM-4ES

The addition of amplifiers to Sony’s Mobile ES line means that every component in a premium car audio system can come from this prestigious series. Our second amplifier spotlight focuses on the compact and powerful XM-4ES four-channel amplifier. Let’s see what Sony’s development team has created!

Sony Mobile ES XM-4ES Amplifier Specifications

The XM-4ES can drive four 2- or 4-ohm loads in its stereo configuration. Each pair of channels can be bridged to drive a single 4-ohm speaker or subwoofer with significantly more power. This bridged configuration is common in systems with a pair of front component speakers and a single subwoofer in the trunk or cargo area.

By way of power specifications, Sony rates this amp as capable of producing a beefy 100 watts per channel with 4-ohm drivers. That power increases to 165 watts when driving 2-ohm loads. When a pair of channels are bridged, the amp will produce 330 watts into a single 4-ohm load. As we’ve come to expect from a no-nonsense company like Sony, all specifications are compliant with the CTA-2006-C standard for supply voltage, noise and distortion content. The power ratings contain less than 1% total harmonic distortion and noise and are measured with 14.4 volts supplied to the amplifier. The CTA-compliant signal-to-noise ratio is 77 dB, and harmonic distortion is rated as less than 0.05%. Finally, the frequency response is very wide at 10 Hz to 40 kHz. On paper, everything looks excellent.

Sony XM-4ES
The XM-4ES amplifier shares the same footprint as its cousin, the 1,000-watt monoblock XM-1ES.

XM-4ES Features and Design

The chassis of the XM-4ES is the same high-mass 10.63-inch wide, 8.46-inch deep, 2.36-inch tall cast-aluminum heatsink as used on the XM-1ES monoblock we spotlighted recently. All signal, power and speaker connections are made along the front edge of the amp, and all but one of the controls are concealed under a removable panel on top of the amp. It’s worth noting that the center trim panel on top of the amp can be rotated 180 degrees, so the Mobile ES logo is aligned with the amplifier’s orientation in your installation.

Sony XM-4ES
The logo plate in the center of the amp can be rotated to align the artwork with your installation.

The front edge features three beefy terminal blocks with heavy-duty set screws accessible from the top of the amp. The right-hand block will accept four-AWG power and ground wires and the remote turn-on lead. The two center blocks are for the speaker output connections, and they will take 10-AWG speaker cables without fuss. A pair of 40-amp ATC fuses to the left of the power block protect the amp.

On the far left of the end panel is a switch that your installer can use to select between low- and high-input voltages. This indicates that the amp has differential inputs – a feature that should be on all car audio amplifiers. Three pair of RCA jacks are present. Two pair are inputs (one RCA for each amplification channel), and the third is an output that could feed a subwoofer amp.

On top of the amp, two groups of controls are mimicked for each pair of channels. These include input sensitivity, filter function, filter range and both high- and low-pass adjustments. Without getting into too much, it’s worth noting that each pair of channels can operate in full-range, high-pass, low-pass or bandpass filter configurations. The amp also includes remote or a signal sense turn-on detection that can be used in high-level input mode, which is crucial for integration with factory-installed source units. There are also switches for signal summing and line-out mode selections. We have a Test Drive Review planned for this amp in a few months. We’ll cover the details of each control then.

Sony XM-4ES
With the XM-4ES top panel removed, your installer has quick and easy access to all the configuration switches and controls.

Chassis and Electronic Design

As mentioned in the XM-1ES spotlight, Sony has put extra attention into the design of the amplifier chassis to help reduce resonance and vibration that could deteriorate sound quality and accelerate wear and tear. That’s something I haven’t seen any other manufacturer focus on.

Internally, the amplifier is based on two circuit boards. The main board is home to the power supply and output stage. High-quality, high-tolerance surface-mount components are used wherever possible. The output filter chokes are shielded units that help to reduce electromagnetic interference. The second circuit board stands vertically and has all the signal processing controls and switches. In all, the design is modern and well-organized.

Sony XM-4ES
The components used to construct the XM-4ES are high quality and should help deliver excellent sound quality.

Check Out the Sony XM-4ES at Your Local Authorized Sony Retailer

We’re excited to get our hands on the XM-4ES to give it a listen and run it through its paces on the TestDriveReview bench. Until then, you can learn more about this amp and its monoblock and five-channel brethren by visiting the Sony Mobile ES website or a local authorized Mobile ES retailer. Be sure to subscribe to Sony’s YouTube channel and follow them on Facebook and Instagram to be the first to learn about their latest car audio product releases.

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Filed Under: Car Audio, PRODUCTS, Sponsored Post Tagged With: Amplifiers, ANSI/CTA-2006-C, Mobile ES, Sony

About 1sixty8 media

1sixty8 media is a content marketing, website development, and business solutions provider specializing in the mobile enhancement industry. The 1sixty8 media team includes many household names in the industry, from store owners and industry writers to award-winning installers and fabricators. To learn more about 1sixty8 media, visit www.1sixty8.com.

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