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" or "Predecessor"). References to "DynaVox," the "Company," and "Successor" refer, subsequent to the IPO and related transactions, to DynaVox Inc. and its consolidated subsidiaries and these references (other than "Successor") refer, prior to the IPO and related transactions, to 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 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 aggregate 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. This release also presents Adjusted EBITDA, as defined by the Company as the income (loss) before income taxes, interest income, interest expense, 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.