if the microphone starts up, then the solution is Sabine FBX 2410 made in USA

Does the microphone turn on? There is a solution! Sabine Feedback Exterminator FBX 2410 (the best feedback, IMHO) is almost new, two channels, Made in USA. Used only a few times. The only thing is that there are small scratches on the bottom (see photos). From myself I will say that the device works great, no matter how it does not spoil the sound. The SABINE FBX 2410 feedback suppressor uses the latest acoustic feedback suppression algorithm developed by the company, it provides even faster feedback detection and suppression. Thanks to the use of new filters, the signal-to-noise ratio is improved by 10 dB. SABINE FBX 2410 feedback suppressor specifications Maximum input/output levels: balanced - +18 dBV peak, unbalanced - +12 dBV peak 14 dB peak power at 4 dBV, balanced input Connectors: 3-pin XLR , TRS Applications: Theater and concert halls, Places of worship, Schools and auditoriums, Conference halls, Sports arenas, Broadcast studios and teleconferences, Public address systems Frequency range: Hz 20 - 20000 ±0.3dB Gain Matching: dB +/-0.2 Input Impedance: Ω > 40 kΩ Output Impedance: Ω > 150 Ω Input/Output Configuration 3-pin XLR and 1/4" TRS at 1kHz - 0.4 seconds Number of filters: 12 A/D D/A converter 24 bits Signal to noise ratio: dB >108 Harmonic distortion: % 0.005%, 1kHz 0.01%, 20Hz - 10kHz 0.025%, 10kHz - 20k Hz Height: 1 units Dimensions: 483 x 45 x 159 mm Weight: 3.6 kg