Brand: BOSSModel: ME-90Sampling Frequency: 48 kHzAD Conversion: 24 bits AF methodDA Conversion: 32 bitsProcessing: 32-bit floating pointEffects: 97 TypesDisplay: 7 segments, 2 characters (LED)Power Supply: Alkaline battery (AA, LR6) x 4 or AC adaptorCurrent Draw190 mA