CA-18-VTB9045 - Transformer: Audio Input (Microphone Level) Carnhill Transformer - VTB9045 Audio signal (Microphone level input) A "Broadcast/Pro-Audio" quality EMI screened microphone signal transformer offering low distortion even at high signal input level. Dual primary and secondary windings provide the option of different input/output inpedances to suit source and load requirements. Download Carnhill Design Guide PDF £39.18 each (Ex.VAT) Quantity: