The Vintech Audio "Dual 72" is a two channel class A, all discrete, transformer balanced microphone preamplifer. It is built with the same basic circuit design and components as the classic Neve 1272 module. This unit features: Input attenuator, output level adjustment, St. Ives input and output transformers. Convenient on board power supply with custom low noise toroidal power transformer. Phase and phantom power switches with LED output level display for each channel.