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Source Audio Atlas Compressor


Source Audio Atlas Compressor Pedal


 

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Presenting the new Source Audio One Series Atlas Compressor Pedal.

The Atlas Compressor offers a comprehensive collection of compression circuits that perfectly capture the tone and feel of the industry’s most sought-after compressors. Straight out of the box, the Atlas delivers six different styles of compression, ranging from classic stompbox compressors, like the now-discontinued Diamond Optical Compressor, to high-end rack units such as the snappy 1176 compressor, and the smooth and gentle LA2A optical compressor. The Atlas also features advanced dual-band compression, which provides an independent set of controls for both the high and low frequencies. Each compression engine has onboard controls for Threshold, Ratio, Attack, Release, Output, Tone, and Blend, allowing for fine-tuned control over the compact One Series hardware.

Let's take a look at the different modes of the Atlas:

The Optical Rack compressor engine is based on the legendary LA2A studio opto compressors from the early 60s. Optical compression controls its output level with light. Increasing the incoming audio level in the original units caused an electro luminescent panel to shine brighter. A photo resistor monitors that light panel and decreased the audio output level, as the panel got brighter. The result is a very smooth and gentle attack that imparts a full-bodied and natural sound on guitar, bass, or vocal. This compressor sounds great with clean strummed or arpeggiated guitar lines as well as acoustic guitars.

The Studio 76 compressor is based on the 1176 studio rack compressors of the late 60s and early 70s. This solid state FET compressor is known for its full body and super-fast attack. All of the attack times in 1176 compressors clock in at less than a millisecond. Studio 76 is a great compressor for fast and aggressive country pickin’ (think Johnny Hiland), slap bass, slide guitar and much more.

The Cubic Zirconia was inspired by opto compressors that use an LED in place of the LA2A’s electro luminescent panel. This technology is usually what you find inside effects pedals. Using an LED as an optical compressor’s light source creates faster attack and release times, which generate artifacts that tend to make the compression sound a bit dirtier. This is a great sound for playing tight and funky riffs on the guitar.

Studio Snap is a very aggressive and modern sounding compressor. It's based on hard-knee, VCA feed forward type compressor. It uses two compressors in parallel to handle both RMS level controls (“Root Mean Square” compression means that the compressor will react according to the “average loudness”) AND the peaks. The combination of these two compression approaches gives STUDIO SNAP its character.

For the Dual Band, The Atlas has two independent compressors that can be routed in a number of different ways. They can run in Series Mode (one running into another). They can also run in Parallel Mode and be mixed together with a Crossfade control. The Dual Band compressor runs in Band Split Mode, which is a version of parallel routing where one compressor controls only the higher frequencies (everything above 333Hz) and the other controls the lower frequencies (everything below 333Hz). With the Dual Band Compressor the high frequencies release faster than the lower frequencies, so as you sustain a chord the low frequencies remain compressed while the second compressor releases the high frequencies. The result is a beautiful blooming effect that accentuates high harmonics. This is a great compressor for slow ringing chords or lead lines with long sustained notes.

"Offering up a deep library of compression options in a pedal is a landmark technical achievement. We started working on compression in 2007. At the time we developed some straightforward, high-end studio stuff that made it into the original Multiwave a year later. The research project to branch out and cover more simple classic pedal sounds and create a dedicated compression pedal was delayed, because the intricacies of how transistors behave in compression circuits was especially illusive. After ten years of additional research, new thinking, and more experience, we are finally ready to launch a landmark pedal: The Atlas Compressor. From classic rack studio units, to classic pedals of many flavors, and even to the experience of high-end computer plug-ins, Atlas covers all the bases with attention to detail that is the hallmark of our development team. Bob Chidlaw, Jesse Remignanti, and Christopher Venter worked long and hard on this one and I'm excited to finally share it with the rest of the world" -Roger Smith (Source Audio President)

Source Audio have also made it easy to transform the Atlas into a bass guitar specific compression machine. With the push of a button, you can convert all six of Atlas’ onboard factory presets into low-end responsive compression engines, precisely optimized for the complexities of the bass guitar. The dynamic range and attack characteristics are much different for bass than guitar. Typically, to achieve a smooth compressed bass tone, the attack and release ranges for compressors such as the 1176 FET compressor and LED optical compressors need to be dialed-in accordingly. Likewise, in dual compression modes, the cutoff frequency that separates the lower band from the higher band needs adjustments to accommodate the specific frequency range of bass guitar. It is all part of our mission to make the Atlas Compressor the most flexible and easy-to-use compression workstation on the planet.

Atlas Features at a glance:
  • 6 Types of Compression: The Atlas offers many different styles of compression with sounds inspired by studio rack gear and classic effects pedals.
  • LA2A Optical Compression: A faithful recreation of an electro luminescent panel combined with a photo resistor and the resulting warm and smooth compression that has been the standard in studios since the 1950s.
  • 1176 Feedback FET Compression: Based on the solid state FET compressor known for its full body and super-fast attack.
  • LED Optical Compressor: Inspired by pedals that work on a similar concept as the LA2A, but swap the electro luminescent panel for an LED and a quicker, dirtier response.
  • Dual Compressors: Use Atlas’ dual compressors in a variety of ways: in Series, Parallel, or Band Split mode, which provides a separate set of controls for both high and low frequencies.
  • Studio Level Compression Controls: Access all the essential compression parameters including Feedback, Ratio, Attack, Release, Makeup Gain, Mix, and Tone, either with the pedal’s knobs or the Neuro Editor.
  • Special Bass Mode: With the push of a button, quickly convert Atlas to a special Bass Mode with compressor engines specifically optimized for bass.
  • Auto Makeup Gain: Dial in sounds quickly. Atlas automatically increases or decreases the Makeup Gain depending on the amount of compression.

Connect the Atlas Compressor to the Neuro Desktop Editor (a free download for Mac or Windows computers) or the Neuro Mobile App (free for iPhone and Android) and explore the power of effect downloading, customization, and sharing that comes with every One Series pedal.
  • Growing Library of Published Presets: Quickly test and download sounds from the ever-expanding collection of published User Presets created by Source Audio and the rest of the Atlas Compressor/Neuro Editor Community.
  • Deep Effects Editing Capabilities: Use the Neuro Desktop Editor (free download for Mac and Windows) or the Neuro Mobile App (free for iOS and Android) to create, store, and share highly customized filter effects.
  • Dual Compressor: Use Atlas’ dual compressors in a variety of ways: in Series, Parallel, or Band Split mode, which provides a separate set of controls for both high and low frequencies.
  • Dan Armstrong Orange Squeezer: A gritty compression inspired by the vintage 1970s unit that graced classic tracks like Steely Dan’s “Peg” and Dire Straits’ “Sultans of Swing.” Available in the Neuro Editor.
  • Look Ahead Compression: A classic studio trick. When engaged, Look Ahead creates an imperceptible latency in the signal that “looks into the future” and allows for an extra quick and smooth attack that without any additional distortion or artifacts.
  • Soft Knee:Adjusts the transition curve of the Threshold point. A sharper knee creates a snappy compression and a soft knee creates a more natural sounding compression.
  • Side Chain Compression: Use the signal going to Input 2 to trigger the compression applied to the signal going into Input 1.
  • Advanced Equalization: Use the 3-band parametric or 8-band graphic equalizers to tweak the tonal characteristics of your compression.
  • USB Connection – Use the pedal’s mini USB port to connect Atlas to the Neuro Desktop Editor, which can be used to edit presets or download the latest pedal firmware.
Atlas Compressor: The Official Source Audio Demo
Pete Thorn Demonstrates the Source Audio Atlas Compressor Pedal
Atlas Compressor with Bass: Official Source Audio Demo
Understanding Guitar Compressor Pedals with the Source Audio Atlas Compressor

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