Device for training currently eight basic functions of speech processing (low-level functions) - these are important for speech understanding and thus ultimately also for good spelling! Variants are available in slowed down by a factor of 2 ("slow version") and in several other languages (especially English, French, Polish...). Please select the respective article with the appropriate user language in the shop. The slow version only makes sense in exceptional cases with particularly pronounced training requirements and very weak initial values. INCL. headphones and instructions!