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The Lil Freq from Empirical Labs is a mastering quality equalizer with eight processing sections including two shelf equalizers, a high-pass (low-cut) filter, four fully parametric equalizer bands, and a dynamic equalizer section for de-essing and high-frequency limiting.
The Lil Freq utilizes traditional and digitally controlled analog circuitry combined in a new topology, which offers a performance that exceeds most digital EQs in terms of distortion and noise. The high-pass section offer eight preset frequencies covering 30 to 330 Hz to remove low frequency content, while the high and low shelving sections offer musically smooth boost and cut on high and low frequencies. The fully parametric EQ section covers 4 overlapping frequency ranges (LF, Lo-Mid, Hi-Mid, and HF) with complete control over frequency selection, cut or boost, and bandwidth. The DS or dynamic EQ section combines tunable filters with a compressor-like circuit that can help control excessive high frequency content, such as sibilants or other sharp transients. The circuit also functions as a soft-knee high-frequency limiter.
There are both XLR and 1/4" / 6.35mm line-level inputs, each being DC coupled. The XLR output includes a Class-A transformer, which offers isolation from ground loops and hum with soft saturation and a beefy low end often associated with vintage gear. Additionally, there is a 1/4" / 6.35mm instrument input on the front panel, which effectively turns the Lil Freq into an instrument DI for studio recording and live performance applications. The Lil Freq is hand-wired in the USA and ships with a standard IEC power cord.