Check the listing for details. Heritage Audio LANG Silverr 47 Tube Microphone Preamp. Condition: New. Listed at 999.00 USD. Unlock the Raw Energy of a '60s Studio Legend Heritage Audio and LANG Electronics Inc. proudly present the Silverr 47, a meticulously crafted re-creation of a coveted '60s-era tube mic preamp. This 2-channel powerhouse captures the unmistakable sonic character of its vintage predecessor, while also offering you plenty of modern features. Inside the unit, you'll find carefully sourced NOS tubes and custom-built LANG transformers, faithfully reproducing the era-defining sound that helped shape the British Invasion. And while the Silverr 47 excels as a microphone preamp, its versatility extends far beyond, serving as a premium line-receiving input amplifier, EQ section driver, fader gain stage, output line driver, and many other creative applications.