UP FOR SALE ARE 3 (THREE) NEW/OLD STOCK RDL, (RADIO DESIGN LABS), MODEL STM-2 STICK-ON MICROPHONE PREAMPS. Need to add another Mic Preamp to your Mixer or Amplifier, but only have a Line Level Input(s) available? Here is the ideal solution. MANUFACTURED IN PRESCOTT, ARIZONA, USA, RDL has been creating high quality audio solutions for several decades. Suggested Retail for these is $205.47 EACH. ASKING $89.00 EACH OR BEST REASONABLE OFFER. The STM-1 is a low-cost quality Microphone Preamplifier designed for use in commercial sound and broadcast applications. The compact size makes it ideal where a larger or heavier preamp cannot be used. Quite often they are adhered to the rear panel using two-sided tape or Velcro so that no additional Rack Space is required. The high-performance circuit provides a fixed 50 dB gain to bring any mic-level signal up to the line-level range of nearly any line input. The STM-1 supply input is single ended and operates from 24 Vdc. Operation from 12 Vdc is possible with a 6 dB reduction in headroom. For intercom applications, the input will operate directly from a speaker. These are “New/Old Stock”, meaning that they have never been used and in their original packaging. THE EXTERNAL POWER SUPPLY IS NOT INCLUDED, which is standard for the STICK-ON Series products. However, we can order the Power Supply for you.