by Red Rock Sound
5.0 / 5     (3 votes)
Win32 Win64 OSX
HLF-3C is a 12 dB per octave low and high cut filters plugin, providing broad retro-tonal sculpting or bygone-era special effects, without the inconvenience of insertion loss found with the unamplified passive hardware.

You can easily subtract the unnecessary frequencies in any instrument and sub-group so they stay wonderfully musical in the mix.

The original HLF-3C hardware unit is a true passive design; there are no input/output amplifiers and it does not require any external power. As a result, there is an inherent loss of signal level when using the HLF-3C hardware. The RRS HLF-3C plug-in compensates for this inherent signal loss for simplified use in the modern era; it has unity gain upon insertion (there is no insertion loss until one or both of the cut filters is engaged).

The HLF-3C interface is very simple and includes only three controls:
  • In — This toggle switch is the plug-in bypass control. When in the down position (bypassed), plug-in processing is disabled altogether. The plug-in is engaged with the switch is in the up position. This switch can be used to compare the processed settings to that of the original signal;
  • Low Cut — This rotary switch specifies the cutoff frequency of the low cut filter. Eleven frequencies are available: 50, 80, 100, 150, 250, 500, 750, 1000, 1500 and 2000 CPS;
  • High Cut — This rotary switch specifies the cutoff frequency of the high cut filter. Eleven frequencies are available: 1.5, 2, 3, 4, 5, 6, 8, 10, 12 and 15 KCS.
DrakuLaura Jan 04 2023
(5 / 5)
Jan 04 2023
This filter is incredible! I am using it for my home audio library via freeware OcenAudio audio editor. The filter perfectly corrects "loudness war" songs (for example, bass-boosted r'n'b with clicky hi-hats), making them sound in human way.
Fresh spider2x0 Sep 07 2022
(5 / 5)
Sep 07 2022
So clean, fire plugin
Grannitus Sep 07 2022
(5 / 5)
Sep 07 2022
Sehr brauchbar - wie auch die anderen free plugins.... Danke