 With device firmware from version 2.0, SDHC cards up to 32GB in size are supported, storing 16 hours at the highest-quality setting (uncompressed PCM WAV, 24 bit, 96 kHz, stereo).Basic four-track recordings can be made in the field with the built-in microphones and two additional input ports which accept external signal sources via XLR or 1/4-inch connectors.In stereo mode, the user has a wide choice of sound quality, with lower quality requiring less storage space.