Explanatory Note and Non-GAAP Financial MeasuresDynaVox Inc. completed an initial public offering (IPO) on April 27, 2010. As a result of the IPO and certain other recapitalization transactions, DynaVox Inc. became the sole managing member of and has a controlling interest in DynaVox Systems Holdings LLC and its subsidiaries ("DynaVox Holdings"). This release presents adjusted pro forma net income (loss), which as defined by the Company represents net income (loss) before non-controlling interest and impairment loss and after pro forma corporate income tax expense applied at an assumed 38.0% rate, which includes a provision for U.S. federal income taxes, assumes the highest statutory rates apportioned to each state, local and/or foreign jurisdiction and assumes the full exchange of Holdings Units of DynaVox Holdings into Class A Common Stock. Adjusted pro forma net income (loss) per share consists of adjusted pro forma net income (loss) divided by the weighted-average number of the Company's Class A Common Stock outstanding, assuming full exchange of Holdings Units of DynaVox Holdings into Class A Common Stock of DynaVox Inc. and giving effect to the dilutive impact, if any, of stock options and restricted stock awards. The Company believes that adjusted pro forma net income (loss), when presented together with the comparable measure presented in accordance with GAAP, is useful to investors to assist in their understanding of the effect of the Company's organizational structure on its reported results and also in comparing the Company's results across different periods. This release also presents Adjusted EBITDA, as defined by the Company as the income (loss) before income taxes, interest income, interest expense, impairment loss, depreciation, amortization and other adjustments noted in the table below. Adjusted EBITDA, adjusted pro forma net income (loss) and adjusted pro forma net income (loss) per share, however, do not represent and should not be considered as an alternative to net income (loss), net income (loss) per share or cash flow from operating activities, as determined in accordance with GAAP, and our calculations thereof may not be comparable to similarly entitled measures reported by other companies.