The T-8 was one of the only synths for many years to feature polyphonic aftertouch. The T-8's keyboard unit is reputed to be one of the best ever made; New England Digital bought T-8 keyboard modules from Sequential and used them on their Synclavier, which contributed greatly to its popularity. Legend has it that the expense of manufacturing the T-8's keyboard was a major factor in Sequential Circuits' loss of profitability.