Heritage Audio Lang Silverr 47 Dual-Channel Tube Microphone Preamplifier

TheLang Silverr 47 is an all-tube dual-channel microphone preamplifier from Lang Electronics Inc., in collaboration with Heritage Audio. Inspired by the iconic mic preamp that helped define the sound of the 1960s British Invasion, the Silverr 47 faithfully recreates the original circuit while adapting it for the needs of today’s professional studios.

From mic preamp to EQ driver, line amp to DI input, the Silverr 47 is designed to excel at every stage of the signal chain. It’s a true studio workhorse capable of delivering warmth, character, and bold harmonic content. Whether you’re after classic tube tone or aggressive saturation, the unique No Feedback gain mode opens the door to sonic shaping far beyond what was possible in the past.

The Silverr 47 revives one of the most influential tube preamp circuits in recording history—originally used across nearly every stage of the recording process and in some of the most iconic 1960s albums. From mic amplification to fader gain-stage and output line driving, this simple yet effective topology became foundational in defining the character of an era.

It even helped spark the distorted guitar sound that reshaped modern music, as guitarists began plugging straight into its tube inputs. Decades later, the same bold tone and adaptability remain invaluable across a wide range of genres—from rock and pop, to hip-hop, metal, and electronic music.

As a distinctive Heritage Audio addition, the Silverr 47 features a No Feedback gain position. This mode removes the typical feedback loop found in most tube circuits, drastically increasing harmonic distortion and saturation. The result is a bold, uniquely colored signal path that turns the Silverr 47 into a powerful tone-shaping tool, ideal for creative production techniques, reamping, or adding intensity to vocals and instruments.

Each channel of the Silverr 47 is built with a carefully selected pair of tubes: a NOS 6AU6 pentode for the input stage and a JJ E88CC for the output. Custom-made input and output transformers designed by Heritage Audio specifically for LANG ELECTRONICS Inc. ensure the unit's tone and headroom live up to its historical inspiration. The stepped gain structure, variable output control, and flexible I/O make it well-suited for everything from subtle coloration to full-throttle tube saturation.

• Mic (balanced XLR), Line (1/4" TRS), and DI (Front 1/4" TS) inputs
• Stepped gain control in 6 dB increments
• Up to +52 dB of gain
• Variable output level per channel
• Worldwide internal power supply for global compatibility