News Center|2026/05/28 Bus Processor 670：Modern, musical, magical https://v.qq.com/x/page/b32778zmarq.html Our modern take on the legendary dual-channel variable-mu tube compressor The distinctive weight, warmth, and authority of the original for any and every bus Use it as a native plug-in or in Flow® Studio & Console 1 Mixing System Also available as a part of Flow® Mixing Suite, Flow® Mastering Suite and Flow® Complete Suite. This plug-in is the product of our quest to discover where the magic of the mythological 670 hardware lies – and distil it. Modern, musical, and that special kind of magical, Bus Processor 670 delivers the unmistakable weight and warmth of the original. Plus, added saturation control, spatialization, and sidechain features for a flexible, modern workflow. Finally, this rare, sought-after, and expensive dual-channel variable-mu tube compressor has transcended its original form so it can transform your mix or master. Simsalabim. ”The Bus Processor has been on my master bus for many years. Now to have this fantastic and incredibly tweakable 670 with all these clever features is simply wonderful.” —— Stefan Boman What’s cool about variable-mu? Variable-mu compression uses tubes to alter gain, and the compression ratio changes dynamically in response to the signal level. The result is the harmonically rich and musical compression that has made the original 670 legendary. This style of vintage processing is great for gluing things together with analog warmth and cohesion, making it ideal for mastering as well as mixing. New Magic To create our Bus Processor 670 plug-in, we took the finest elements of the original and added our own wouldn’t-it-be-cool-if ideas to make a totally unique tone machine. Starting with full control of saturation points with dedicated knobs for tube and transformer saturation, and a calibration knob to influence the unique compression-dependent saturation of the variable-mu architecture. We also included sidechain options that give you control over filters, tone shift and mono/stereo linking, as well as separate outputs for M/S channels. Then there are the new spatialization features that include air band, mono maker, and stereo widening knob. Full-featured but dead-simple to use, Bus Processor 670 lets you find the magical sound of the 670 for yourself, with a workflow fit for your modern studio. The Art of Rock & Roll Science Our reputation for producing tools that improve workflow and offer the highest quality sound is rock solid—and long. We have forged strong partnerships with premium brands like Tube-Tech, Weiss, Chandler Limited, and Marshall. Partnerships that have lasted twenty years. This is the legacy Bus Processor 670 is built on. One of creativity, passion, and attention to detail. To create tools that innovate, you have to have heart, soul, and Rock & Roll Science. In short A dual-channel variable-mu tube compressor The essence of the legendary 670, distilled and made modern Unmistakably weighty and warm – just like the original hardware Added modern features, like saturation controls and spatialization features Enhanced workflow for modern engineering and production processes Console 1-ready: compatible with our mixing system hardware Flow® Studio-ready: compatible with our Flow Studio hardware Included in Flow® Mixing, Mastering & Complete Suite subscriptions Manual This product supports Extended Features We love VU meters, Bakelite knobs, and analog quirks. But we want modern precision and workflow. The answer? Softube Extended Features. Easy-access panels with the innovations you need close at hand. System Requirements macOS Sonoma 14, Sequoia 15, Tahoe 26 Windows 10 (64-bit), Windows 11 Softube account iLok account Computer with AU, VST, VST3 and/or AAX compatible DAW host software Internet access (for downloading installers and managing licenses) Share: