Softube Tube-Tech CL 1B Mk II is a meticulously crafted digital emulation of the renowned Tube-Tech CL 1B hardware compressor. This plugin faithfully recreates the warm, smooth, and musical compression characteristics of its analog counterpart, which has been a staple in professional studios for decades. The CL 1B Mk II builds upon the success of its predecessor, offering improved graphics and enhanced analog circuit modeling to deliver an even more authentic experience. As an all-tube optical compressor, it excels at providing transparent yet effective compression across a wide range of sources, from vocals and bass to full mixes. The plugin’s interface mirrors the iconic blue faceplate of the hardware, featuring large, easy-to-read VU meters and intuitive controls that allow users to shape their sound with precision and finesse.
Pros:
• Exceptionally accurate emulation of the hardware’s sound and behavior
• Versatile compression suitable for various sources and genres
• User-friendly interface with clear, vintage-inspired graphics
Cons:
• Relatively high CPU usage compared to some other compressor plugins
The Softube Tube-Tech CL 1B Mk II boasts a comprehensive set of features that closely mirror those of the hardware unit. At its core is the optical compression circuit, which provides a smooth and musical response to incoming audio. The plugin offers a range of controls that allow for precise tailoring of the compression characteristics.
The Gain control adjusts the output level, enabling users to compensate for any reduction in volume caused by compression. The Ratio knob determines the amount of compression applied, with settings ranging from gentle 2:1 compression to more aggressive 10:1 limiting. The Threshold control sets the level at which compression begins to take effect, allowing for fine-tuning of when the compressor engages.
CL 1B Mk II has a Attack/Release Select switch. This three-position switch offers Manual, Fixed, and combined Manual/Fixed modes. In Manual mode, users have full control over the attack and release times. Fixed mode provides program-dependent attack and release settings optimized for general use. The combined mode allows for complex, program-dependent release time slopes, where fast peaks result in quick release times and slower changes lead to longer release times. The large VU meter dominates the interface, providing clear visual feedback of either input level, output level, or gain reduction. This allows for precise monitoring of the compressor’s effect on the signal.
The CL 1B Mk II also includes some modern additions not found in the original hardware. A sidechain low-cut filter enables users to prevent low frequencies from triggering excessive compression, which is particularly useful when processing full mixes or bass-heavy material. The parallel compression control allows for easy blending of the dry and compressed signals, facilitating techniques like New York-style compression without the need for complex routing.
Extended features provide even more control over the plugin’s behavior. These include adjustable meter ballistics, oversampling options for higher quality processing, and the ability to unlink the stereo channels for independent left and right processing. The plugin’s user interface is both aesthetically pleasing and functional. The skeuomorphic design faithfully recreates the look of the hardware, with its distinctive blue faceplate and large, easy-to-read controls. This attention to visual detail not only enhances the user experience but also helps to create a sense of familiarity for those accustomed to working with the hardware unit.
When compared to other high-end compressor emulations, the Softube Tube-Tech CL 1B Mk II holds its own admirably. Its closest competitors include Universal Audio’s LA-2A and LA-3A emulations, which also model classic optical compressors. While these plugins offer similar warmth and smoothness, the CL 1B Mk II provides more precise control over compression parameters. The CL 1B Mk II also competes with modern software compressors like the FabFilter Pro-C 2 and Waves API 2500. While these plugins offer more extensive features and visual feedback, they lack the specific character and simplicity of the Tube-Tech emulation. The CL 1B Mk II excels in its ability to impart a subtle, musical quality to the audio without introducing noticeable artifacts or coloration, making it particularly well-suited for users seeking transparent yet effective compression.
This plugin is best for:
• Recording and mix engineers seeking high-quality, versatile compression
• Producers working across multiple genres, especially those requiring transparent dynamics control
• Anyone looking to add the classic Tube-Tech sound to their digital workflow
• Users who appreciate vintage-style interfaces and straightforward controls
Tube-Tech CL 1B Mk II stands as a testament to the power of modern plugin technology to recreate classic hardware. It captures the essence of the original CL 1B, delivering the smooth, musical compression that made the hardware unit a studio staple. The plugin’s ability to handle a wide range of sources with equal finesse makes it a versatile tool for both tracking and mixing. Its user-friendly interface, combined with the added modern features, strikes a balance between vintage charm and contemporary functionality. The CL 1B Mk II shines in situations where transparent yet effective compression is required. It excels at taming dynamic vocals without losing their natural character, adding sustain to bass and guitars, and even providing subtle cohesion to full mixes. The addition of features like parallel compression and sidechain filtering expand its utility beyond that of the original hardware. For those who have always desired the Tube-Tech sound but found the hardware prohibitively expensive, this plugin offers an accessible alternative that doesn’t compromise on quality. It’s a powerful tool that can elevate productions across various genres, from pop and rock to jazz and classical. The Softube Tube-Tech CL 1B Mk II is not just a plugin; it’s a virtual incarnation of a modern classic, bringing the revered Tube-Tech sound into the digital domain with remarkable accuracy and usability.