The 1695k is an EQ circuit from the Studer 169 console designed to fit in one 500-series slot. The EQ features a midrange bell-curve filter, and low and high shelving filters.

Notable Features:

• +/-15dB of boost or cut
• Preset low and high frequency bands are easily modified
• Uses Omeg pots
• Option for discreet or integrated circuit opamps
• Neutrik input transformer
• Designed for API 500-series rack system

Price: 22€ for PCB +2 discreet opamp PCBs from Gustav

More information:

• Adiox’s original project thread featuring schematic, parts layout, bill of materials, front panel design, and other good stuff.
• PCBs available from PCB Grinder.