ThrillseekerVBL mkII
Key Features
- Variable-Mu tube compression emulating classic 1950s broadcast limiter designs with authentic harmonic saturation
- Independent saturation and compression controls allow separate shaping of dynamics and tonal coloration
- Improved high-frequency response in mkII virtually eliminates the treble rolloff found in the original version
- Versatile tone-shaping from soft and mellow to punchy and aggressive Variable-Mu style compression
- Audio transformer simulation adds authentic analog warmth and transformer coloration to the signal path
- Significantly reduced CPU usage compared to the original ThrillseekerVBL with enhanced visual metering
Description
ThrillseekerVBL mkII by Variety of Sound is a variable-mu style tube compressor and limiter modeled after the classic broadcast limiters of the early 1950s. It combines musical gain-riding with harmonic tube saturation to deliver everything from smooth, transparent compression to aggressive, colorful limiting.
The mkII revision, released in October 2022, overhauls the original 2013 design with independent saturation and compression controls. Users can now activate and shape each stage separately, giving precise control over both dynamics and tonal character.
The updated high-frequency response virtually eliminates the circuit-related treble loss that characterized the original version. CPU usage is significantly reduced compared to the mkI, and the interface provides enhanced visual feedback for gain reduction and saturation behavior.
Bedroom Producers Blog selected the original ThrillseekerVBL as the best freeware plugin of 2013, praising its smooth, creamy sound and authentic Variable-Mu emulation. The mkII continues that legacy with a more refined sonic palette.
Users on KVR Audio and Reddit consistently describe the plugin as sounding remarkably analog, with particular praise for its performance on bass guitars, kick drums, pianos, and the master bus. One Plugins4Free reviewer called it "probably the best compressor I've used in the digital domain."
ThrillseekerVBL mkII is available as a VST plugin (32-bit and 64-bit) for Windows only.
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Frequently Asked Questions
What type of compressor is ThrillseekerVBL mkII?
ThrillseekerVBL mkII is a variable-mu (vari-mu) tube compressor and limiter. Variable-mu compressors use vacuum tubes as the gain reduction element, which produces smooth, musical compression with inherent harmonic saturation. This design is modeled after classic broadcast limiters from the early 1950s.
What is the difference between ThrillseekerVBL mkII and the original version?
The mkII version adds independent saturation and compression controls so each can be shaped separately. It also fixes the high-frequency loss that characterized the original, reduces CPU usage significantly, and provides enhanced visual feedback for gain reduction and saturation.
Is ThrillseekerVBL mkII available for macOS?
No. ThrillseekerVBL mkII is available only for Windows in VST format (32-bit and 64-bit). Variety of Sound plugins were developed exclusively for Windows and have been discontinued, so a macOS port is unlikely.
Can ThrillseekerVBL mkII be used on the master bus?
Yes. Many users on KVR Audio and Gearspace recommend using it on the master bus for gentle glue compression and analog warmth. The Variable-Mu design is historically associated with mastering applications, as hardware units like the Manley Vari-Mu are studio mastering staples.
What is the best Manley Vari-Mu alternative for free?
ThrillseekerVBL mkII is widely considered one of the closest free alternatives to paid variable-mu compressors like the Manley Vari-Mu plugin. It delivers similar smooth, tube-saturated compression characteristics, though it is limited to Windows VST format.
