Features:Providing 4 completely different crystal particle sound algorithms in the range -12 semitones to 12 semitones.Compared with other brands, Aural Dream Crystals Harmony effect pedal does not produce a bang when switching sound effects or switches.Feedback is used to create cascading crystal grain-like harmonic overlapping sequences with fixed scale differences in ascending or descending tones.Power saving, the current is only 50mA; and it is true bypass; compact design and aluminium alloy shell for long durability.Using internal feedback, internal delay and internal transfer to create unique and beautiful "crystals" effects that are very rare in the market.Specifications:Material: aluminum alloyColor: dark blueSignal Input/Output: 1/4″Monaural Jack )Chip Core Voltage: 1.8VChip Peripheral Voltage: 3.3VADC SNR: 95dBDAC SNR: 100dBPower Supply: DC 9V adapterWorking Current: 50mAItem Size: Approx. 12.1 * 6.8 * 5cm / 4.76 * 2.68 * 1.97inItem Weight: Approx. 278g / 9.81ozPackage Size: 14.5 * 9 * 6cm / 5.71 * 3.54 * 2.36inPackage Weight: 396g / 13.97ozNote:Digital pedal power needs to be optinally connected via the FX Loop port of Amp.Package List:1 * Effect Pedal1 * battery cable