Power supply for hp dc97001/2/2023 ![]() ![]() You are bidding on(1) OTARI FS-96 Format& Sample Rate Converter. The components are top quality Nichicon electrolytic caps and 1% metal film resistor The PCB is the same high quality board as always. Omron's sealed relays will make noise free connections for years and years. Connect your front panel switches and provide power. These boards make your Mic Preamp DIY project a breeze to implement! Just connect the input and output connectors to the board. ![]() Generally this gain pot sets the 2nd stage for 20db of gain. Phase Reverse, 20 db pad used before the mic input transformer and a relay closure that switches in a trim pot to set the gain of the 2nd opamp in a 2 stage Mic Preamp design. The board provides remote control switching of four essential Mic Preamp functions: +48 volt phantom power. That is all! To make it even easier.This board can be used with my Mic Preamp Relay board which is also available in my ebay store: ebay item#130423109277. ![]() The discrete opamp, gain pot and a power supply. ![]() Assembly requires a high quality mic input transformer like the Jensen JT-16A. Important note: Jensen 990 style opamp is NOT included* The second amp section gives you a LF351 opamp buffered output to drive a VU meter. I also added solder pads for a 8 pin DIP socket so you could use an opamp like the LF351 instead of the 2520 or 990! Many tech's have used this card as mixing buss upgrades in MCI. This is an awesome preamp for vocal and instrument recording where you want clean crisp accurate reproduction of your mic signal with little coloration. Headroom is even higher with a +/ 24 volt supply. My testing shows a-20 db input at 1KHZ will give you +20 db output( just before clipping) at.06% THD with a +/ 15 volt supply. This circuit will give you 40+ db of gain. The Main amp uses an Jensen 990 or API 2520 type discrete. This PCB has 2 discrete amplifier sections. This auction is for(1) one Mic Preamp circuit board. ![]()
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