API 215L Filter – 500 Series High/Low Pass Filter Module

The API 215L is a precision-engineered 500 Series filter module that delivers smooth and musical frequency control with API’s signature analog tone. Designed to complement any recording or mixing chain, the 215L features both high-pass and low-pass filters with sweepable frequency ranges for versatile tone shaping and cleanup tasks.

The high-pass filter offers a steep 12 dB/octave slope and is sweepable from 20 Hz to 600 Hz, ideal for eliminating rumble, low-end build-up, or unwanted sub-frequencies. The low-pass filter features a gentle 6 dB/octave slope and sweeps from 500 Hz to 20 kHz, allowing you to roll off harsh highs or shape sources for warmth and smoothness.

The 215L is perfect for both surgical frequency control and musical filtering, making it a flexible tool for a variety of sources including vocals, instruments, and full mixes. Built to API’s legendary standards, it features discrete analog circuitry and is compatible with all standard 500 Series racks.

Key Features:

12 dB/octave high-pass filter sweepable from 20 Hz to 600 Hz
6 dB/octave low-pass filter sweepable from 500 Hz to 20 kHz
Designed for smooth, musical filtering
Ideal for low-end cleanup, high-frequency control, and tone shaping
Fully discrete analog design
Fits all API 500 Series compatible racks

Whether you’re tracking, mixing, or performing subtractive EQ cleanup, the API 215L provides powerful and intuitive filtering in a reliable, high-quality 500 Series module.