RRS HLF-3C is a powerful plug-in that completes the Passive EQ Collection. Designed for iPhone, this plug-in offers 12 dB per octave low and high cut filters, allowing users to achieve broad retro-tonal sculpting or create bygone-era special effects. The best part? It eliminates the inconvenience of insertion loss commonly found with unamplified passive hardware.

With RRS HLF-3C, you can easily subtract unnecessary frequencies from any instrument or sub-group, ensuring they blend seamlessly in the mix while maintaining their musicality. The plug-in compensates for the inherent signal loss of the original HLF-3C hardware, providing unity gain upon insertion.

The interface of RRS HLF-3C is straightforward, featuring three controls. The Enable toggle switch allows you to bypass the plug-in processing or engage it to compare the processed settings with the original signal. The Low Cut rotary switch offers ten cutoff frequency options ranging from 50 to 2000 CPS, while the High Cut rotary switch provides ten cutoff frequency options ranging from 1.5 to 15 KCS.

To use RRS HLF-3C, simply install an AUv3-compatible host app like GarageBand, Auria, AUM, Cubasis, and more. Once installed, HLF-3C will appear in the list of Audio Unit extensions for effect plug-ins in the host app. Experience the power of passive EQ on your iPhone with RRS HLF-3C.