Hi. I got a hold of some vintage 918 Opamps (Pacific Recorders) from eBay.
I drew up the circuit from the original Jensen app notes, added the necessary input circuitry - phantom, pad, polarity and a FET DI.
Transformer footprints are for Lundahl (LL1570 in, LL1517 out) and Jensen (JT-16PCjr in, vintage JT-123s that are on eBay in droves and the modern JT-11E out). Also, it can accept the modern gar918 from CAPI and BLU-18 from DIYRE. Grayhill 71 series or 10kc Alpha ( I really recommend the switch). Everything works and I really dig the tone. Anyways I had a bunch of PCB's made and have spares. Blue solder mask and gold fingers.
$10 each + shipping. Open to trade offers too.
I drew up the circuit from the original Jensen app notes, added the necessary input circuitry - phantom, pad, polarity and a FET DI.
Transformer footprints are for Lundahl (LL1570 in, LL1517 out) and Jensen (JT-16PCjr in, vintage JT-123s that are on eBay in droves and the modern JT-11E out). Also, it can accept the modern gar918 from CAPI and BLU-18 from DIYRE. Grayhill 71 series or 10kc Alpha ( I really recommend the switch). Everything works and I really dig the tone. Anyways I had a bunch of PCB's made and have spares. Blue solder mask and gold fingers.
$10 each + shipping. Open to trade offers too.