Gyraf Audio G23-S Stereo Tilting Equalizer  From Gyraf

The Gyraf Audio G23-S stereo tilt equalizer is an original idea of ours – the first ever equalizer based on fully linear one db/oct filters. The way we implement filtering allows for very gentle overall tonal corrections without losing much subjective phase coherence or mix integrity. All-tube signal path, or modern solid-state technology, accessible with the flip of a switch.

The G23-S is an updated version of Gyraf Audio G23 – now including an option for selection between all-solid-state technology or classic tube circuitry. Gyraf Audio added an additional step to the bypass switch - marked "S" - which instantly shifts you into solid-state land: Inputs become differential instrumentation type in stead of transformer, active equalizer stage gets controlled by a state-of-the-art opamp, and output stage gets servo-balanced in stead of tube/transformer drive.

What sets it apart from all other EQ designs is that Gyraf Audio designed it around a highly linear 1dB/oct slope filter, so that rotating the control will adjust an almost ruler-straight response curve, to a maximum steepness of 1dB/Oct. So what you acheive in the 1dB/Oct function is to "spread out" or distribute the "needed" phase roll across the whole spectrum, meaning that at any given interval, only minute amounts of group delay is apparent. In total, it allows quite some correction without sounding "Eq'ed". And because you'd occasionally want to correct outer ends of spectrum, they have added a gentle Baxandall tone control, shelving lows and highs, wide-Q bell mid, each at three selectable frequencies, that they spent quite some time optimizing.

FEATURES:

• Mainly for mix and mastering
• Option for selection between all-solid-state technology or classic tube circuitry
• Designed around a highly linear 1 dB/oct slope filter
• Gentleness and subtlety are G23-S design targets