Warm Audio Warm lifter 26dB booster

Warm Lifter’s signal path begins with a balanced, 2.4k Ohm (impedance) JFET input that delivers 26dB of pure, clean analog gain. Having 26dB on tap before hitting digital is incredibly helpful, as this should prevent any mixer or digital interface from having to go much beyond 40dB of onboard digital gain. As digital gain increases, the likelihood of artifacts and thinning of sound increases. The JFET input provides enough analog tone to keep the mic sounding “open” without adding any noise or too much color. The 2.4k Ohm impedance will deliver excellent frequency response for low-output mics that fall into typical impedance ranges.

Warm Lifter has a selectable 12dB high-pass filter and 2.5dB high-shelf boost. The 12dB high-pass filter’s corner frequency is located at 100 Hz, right in the middle of the true bass frequency range. Engaging the filter will cut all frequencies under 100 Hz, which will be perceived as removing “boominess” from the sound. The 2.5dB high-shelf boost corner frequency is located at 3 kHz, which lies squarely in the middle of the upper-midrange. This is a shelf-style boost, meaning, all frequencies above 3 kHz will be boosted at a more gentle 2.5dB in comparison to the high-pass filter. Since this is a shelf and will boost everything above 3k, the perceived change will add upper-mids, presence, as well as true high-end, otherwise known as “air” or “brilliance.” Engaging this boost will instantly add clarity to your sound.