This video introduces the VT-7, explains what each control does, gives you some starting points for various situations, and explains some of the principles of compression and how to use that knowledge to improve your recordings. (Running time: about 24 minutes, in two parts.)
This video introduces the VT-2, explains what each control does, gives you some starting points for various situations, and explains why tubes sound different from solid-state devices, and how to use that knowledge to improve your recordings. (Running time: about 25 minutes, in two parts.)
This video covers both the VT-4 (mono) and VT-5 (stereo) Vacuum Tube Equalizers. Learn some of history of equalization, what the controls on the VT-5 do, and how the VT-5 was designed.
Doug Fearn describes the features and operation of the VT-12 70dB Vacuum Tube Microphone Preamplifier, a special-purpose mic preamp designed specifically for use with ribbon microphones. Along the way, you will learn about how various types of microphones work (condenser, dynamic, and ribbon), and why 48-volt phantom power can be a hazard to ribbon mics and how the VT-12 helps you to keep your ribbon mics safe.