Sabine FBX-1020 Feedback Exterminator with IEC power cord and rack mount bolts/washers.

Great working unit.

The Sabine FBX 1020 is a single-channel, 1U rackmount feedback suppressor. Designed for live sound setups like PA systems, monitors, and conference rooms, it automatically detects acoustic feedback and deploys ultra-narrow digital filters to eliminate ringing without degrading the audio quality.

Key Features

• Automatic Feedback Control: It constantly monitors audio and can place a filter on a feedback frequency in typically less than one second.
• Ultra-Narrow Filters: Features 12 Constant Q micro-filters per channel that are extremely precise, ensuring only the problematic frequency is cut rather than affecting surrounding musical tones.
• ClipGuard™ Adaptive Clip Level Control: Increases the effective dynamic range (up to 105 dB) and prevents digital clipping during sudden volume spikes.
• Turbo Setup Mode: Allows the system to find and eliminate feedback quickly at lower volumes during soundchecks.
• Connectivity: Equipped with standard XLR and 1/4" input/output options for easy integration into existing audio chains.

User Benefits: The device allows sound engineers and performers to achieve significantly higher gain before feedback (typically 6 to 9 dB) without needing to manually hunt for offending frequencies on a graphic equalizer. It distinguishes between sustained musical notes and feedback tones, leaving the performance crystal clear.