Tegeler Passive Tube Equalizer

The Tegeler Audio Classic Equalizer is a high-end passive tube equalizer built to deliver the unmistakable warmth and musicality of classic vintage EQ circuits. Its passive boost-and-cut topology allows for broad, natural shaping of low end, silky enhancement of the highs, and subtle smoothing of harsh frequencies. Adjustable treble bandwidth and transformer-balanced tube stages introduce gentle harmonic richness without overwhelming the source. Designed for tracking, mix-bus work, and mastering, the Classic Equalizer adds depth, weight, and openness while maintaining a clean, natural character. It's ideal for engineers seeking timeless analog tone with precise yet musical control.



• Stereo analog device

• Low boost/attenuation (Low shelf):

• 20Hz, 30Hz, 60Hz, 100Hz

• High boost (Peak with variable bandwidth):

• 3kHz, ,4kHz, ,5kHz, 6kHz, 8kHz, 10kHz, 12kHz, 16kHz, 20kHz

• High attenuation: (High shelf) 5kHz, 10kHz, 20kHz

• Balanced input and output

• Input and output transformer

• Bypass switch

• Internal power supply