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Exploring the Enhanced Features of Acustica Audio’s Amber 4 Ultra Plug-in Suite: A Review and Overview of the Latest Launch

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You have arrived at the Amber 4 Ultra plug-in suite by Acustica Audio.

The newest release from Acustica Audio utilizes their Hyper technology and new Aria engine to offer an improved version of their well-known Amber 4 plug-in suite. Amber 4 Ultra features accurate representations of Class A equipment, including two EQs, a compressor, and a preamp, with upgraded visuals and better audio quality.

The suite includes two EQ plug-ins called Amber 4 Ultra and Amber 4 Stereo Ultra. Both have the same controls, but the Stereo version has separate controls for each channel. Each EQ has four bands with frequency and gain controls. The low- and high-mid bands have a width setting, while the low- and high-frequency bands can switch between peak and shelf filter types.

Amber 4 Ultra has a continuous control feature that allows users to target mid, left/right, and side signals. On the other hand, Amber 4 Stereo Ultra offers individual control over the left/mid and right/side channels. Acustica claims that the Amber 4 Ultra is one of the most powerful and low-noise parametric EQs in the digital realm, while they also state that the Amber 4 Stereo Ultra is one of the most musically transparent EQ options in their collection.

The Amber 4 Comp Ultra emulates a Class-A opto compressor using Hyper technology to provide a clear dynamics processor. It includes standard compressor controls as well as features like side-chain filtering, stereo linking options, and a blend control for mid, left/right, and side signals. Additionally, it has built-in parallel compression capabilities.

The Amber 4 Pre Ultra includes eight different emulations of Class A preamp designs, featuring both solid-state and valve-based units. The controls on these units are basic, including input and output levels, as well as options for adjusting the Preamp (gain) and Filter (high-pass) settings.

With the introduction of the new Aira engine, all the plug-ins now have the ability to show dynamic and real-time metering displays. They also come equipped with the company's Anti-Aliasing algorithm and have a lower CPU usage than their previous versions.

System Requirements

Amber 4 Ultra can be used on computers with Windows 10 or 11, and Macs with macOS 10.15 and above. It is compatible with VST2, VST3, AU, and AAX plug-in formats.

The Amber 4 Ultra is currently ready for purchase at an introductory price of €89 until February 26, 2024. After this date, the price will increase to €209.

Visit the Acustica Audio website to explore and purchase the AMBERULTRA plugin.

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