- Publisher: Reason Studios & Ekssperimental Sounds
- Product: HighPass LowPass Filter 1224
- Version: 1.0.1-DECiBEL
- Format: Reason Rack Extension
- Requirements: You need R2R Reason release and TEAM R2R Reason Rack Extension Cache Builder
King Tubbys high pass filter was known as “the big knob”. He often used it to sweep the reverbs and echos in his dub mixes. In the same series there was also a lowpass filter – both had characteristic and specific stepped frequencies. This is where the inspiration for HighPass Filter 1012 and LowPass Filter 1024 came from. The 1012 is a 12dB/octave slope highpass filter while the 1024 is 24dB/octave lowpass, both with peak control and input transistor drive to boost the signal while giving it some analog heat. The CV jacks on the back lets you smoothly modulate the cut off frequencies with control voltage. The HPLP Filter 1224 combines both the HP and LP in one unit for quick and easy usage.