Sealed/shielded transformers are for special applications. We use 1.5mm thick steel enclosure casings that are brushed finished and then filled with an epoxy resin. These are a fine quality transformer that are completely custom made to order. PLEASE enquire about pricing based on your special requirements. Generally these can be 3week special order items. Well worth the wait for your special project that demands the best audio transformer.
Here is an example of the transformers being hand wound with impeccable attention to detail. This is a key reason these transformers are better than most, which are often machine wound like from the machine below. We choose not to offer many of the machine would transformers.