Sean Costello of Valhalla DSP wants you to "halla" at his new freq plugin, ValhallaFreqEcho MkI (Mac / Win). This frequency shifter comes combined with an analog-style echo and is free for the taking.

ValhallaFreqEcho MkI features Bode-style frequency shifting, analog-style delay with delay time set via knob or synced to tempo, low-cut and high-cut filters for shaping delayed sound, feedback control that can produce self oscillation even without input, Mono / Stereo input, and stereo output.

Along with an intuitive interface, the plugin boasts the ability to sync the delay time to the tempo. Using the plugin, you can achieve barberpole flanging and phasing, dub echoes that constantly rise or fall in pitch, the classic detuning sounds of frequency shifting, and a variety of psychedelic self-oscillation patterns that will spin around and through your skull, according to Valhalla DSP.

ValhallaFreqEcho MkI is available in VST, Audio Units, and RTAS effect plugin formats, from valhalladsp.com.