The harmonica equivalent of a 12-string guitar!

The Hohner 1496/48 Echo Harmonica has an octave tuning (the upper row of 24 holes is tuned one octave below the lower row of 24). When the 2 rows are played at the same time this creates the effect of 2 harmonicas simultaneously playing the same melody. This enables a single harpist to achieve a stronger, full-bodied sound not possible while playing a standard diatonic.