c.1945 Vintage McCurdy AU300 Tube Mic Pre Preamp Plug and Play with Power Supply XLR in/out Gain Control Start Price USD 1,050.00 Current Price USD 1,050.00 Time Left - Bid Count 0 Buy It Now Price USD 1,099.00 Reserve Price - Start Time Saturday, November 15, 2008 End Time Tuesday, November 25, 2008 Location Spartanburg, South Carolina See more about 'c.1945 Vintage McCurdy AU300 Tube Mic Pre Preamp ' Description Up for auction is a vintage McCurdy Radio Industries of Canada AU300 tube microphone preamplifier. One of the best preamps ever made. Check out the schematic - beautiful transformer balanced circuit design. This one has been serviced and is in fully working condition. Capacitors have been replaced by a combination of high end Wima "Black Box" audio and Paper in Oil new old stock. XLR input and output wired. Power supply wired. Gain control wired. Also included is a regulated high voltage tube power supply making this a plug and play setup with up to 68db of tube gain!! Place a Bid!