Korora Audio Archives

Korora Audio has launched their first pedal with the Spira, a filter modulation pedal inspired by the Shepard Tone Glissando. The unit has 24 parallel resonant bandpass filters for some serious flexibility. “With the rate set low, Spira achieves the classic and recognizable Shepard Tone and can also be compared to comb filter and formant filter effects,” the company writes....