Vacuum tube preamplifier, digital filter aroma, DC 5.5*2.1 socket and 12V AC transformer for 6J1 vacuum electron tube valve preamp board headphone amplifier parts: Amazon.de: Electronics & Photo
Like Power Transformer Coil HD 10 AMP 30.0.30V/2 AMP 12.0.12V/2 AMP 0.12V, Model Type 16, Size Hight 4 inch Weight 2 inch : Amazon.in: Electronics