CA-18-VTB9057 - Transformer: Audio Output (Ungapped Version) Carnhill Transformer VTB9057 Audio signal (High Output ) - Ungapped A "Broadcast/Pro-Audio" quality signal ouput transformer capable of delivering high level output at low distortion. Dual primary and secondary windings provide the option of different input/output inpedances to suit source and load requirements. Download Carnhill Design Guide PDF £17.66 each (Ex.VAT) Quantity: