Reviews Feedback Amplifiers

Behringer ULTRAGRAPH PRO FBQ1502 Audiophile 15-Band Stereo Graphic Equalizer with FBQ Feedback Detection System

  • Professional 15-band stereo Graphic Equalizer for both live and studio applications.
  • Revolutionary FBQ Feedback Detection System instantly reveals critical frequencies and can also be used as Audio Analyzer.
  • Dedicated mono subwoofer output with adjustable crossover frequency.
  • Ultra low-noise audio operational amplifiers offer outstanding sound performance.
  • Shielded toroidal power transformer for ultra low-noise performance.
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ASTRACY ZR-M92 Hearing Aids for Seniors & Adults, Rechargeable Hearing Ampli fier with Noise Cancelling, Small In Ear Heaing Aids

  • 【Superior Sound】- Compared to other hearing amplifier models in the market, we have minimum squealing when wearing hearing aids. The sound quality is consistent, long lasting, and clear, with almost zero whistling or feedback. No more missing out on conversations with friends and family..
  • 【Natural Sound】-Suitable for mild to moderate hearing loss, according to your needs and different usage scenarios, you can get different gains, assist in watching TV, on the phone, in normal discourse, and more, making the sound more natural..
  • 【Comfortable to Wear】 - Stylish earbuds shape design, save the hassle of wearing traditional BTE (behind the ear) type OTC hearing aids. Snugly fits your ear canal without falling off. Small and comfortable to wear..
  • 【Rechargeable】-The high-quality hearing amplifiers are 100% rechargeable with wireless magnetic charging and feature a 25 -30 hours battery life with a 2-3 hour charging time. With a sleek magnetic charging dock, the devices wirelessly charge when in the dock..
  • 【Ideal Gift for Seniors】- And affordable solution for mild to moderate-severe hearing loss. ASTRACY over the counter hearing amplifiers make perfect gifts for elderly family members with impaired hearing..
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BOSS Audio Systems R1100M Riot Series Car Audio Subwoofer Amplifier - 1100 High Output Monoblock Class A/B 2/4 Ohm Stable Low/High Level Inputs Low Pass Crossover Mosfet Power Supply Stereo

  • Power - 1100 Max x 1 @ 2 Ohms, 550 Max x 1 @ 4 Ohms.
  • Class A/B Topology - Class ‘A’ amplifiers have enormous amount of current flowing through its output transistors with no audio signal. Class ‘B’ amplifiers have no current flowing through its outputs with no audio signal.
  • Mosfet Power Supply - A MOSFET is an electrical switch that allows the flow of electrical current. It controls the output voltage & current precisely by removing the output current sensing loss & eliminating all secondary feedback circuitry.
  • Low & High Level Inputs - A low level (RCA) input is measured in voltages. A high level (+/- wire) input is measured in wattages. Both essentially carry signal from your receiver to your amplifier to your speakers.
  • Variable Low-Pass Crossover - Subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction.
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Taidacent AD8130 Differential Receiver Amplifier Module Differential to Single-ended High Common-mode Rejection Ratio Low Noise Low Distortion

  • Name: AD8130 Differential Amplifier Size: 43mm X 38mm Supply voltage range: ±5V~±12V.
  • The differential-to-single-ended amplifier, which has a 270-MHz bandwidth and a very high common-mode rejection ratio (CMRR) at high frequencies, can also be effectively used as a high-speed instrumentation amplifier or to convert a differential signal to a single-ended signal..
  • Differential amplifiers can process single-ended inputs as interactive differential outputs or treat differential inputs as differential outputs. These amplifiers have two independent feedback loops that control the differential and common-film output voltages, respectively..
  • Chip features 1. High speed AD8130: 270 MHz, 1090 V/us (G= +1) AD8129: 200 MHz, 1060 V/us (G= +10) 2. High Common Mode Rejection Ratio (CMRR) 94 dB (minimum, DCE100 kHz) 80 dB (minimum, 2 MHz) 70 dB (10 MHz) 3. High input impedance: 1 MQ differential 4. Low noise AD8130: 12.5 nV/Hz AD8129: 4.5 nV/vHz.
  • 5. Input common mode range: ±10.5V 6 low distortion, 1V peak-to-peak (5 MHz): AD8130, -79 dBc (Worst Harmonic, 5 MHz AD8129, -74 dBc (Worst Harmonic, 5 MHz) 7. User adjustable gain G= +1 without external components 8. Supply Voltage Range: +4.5V to ±12.6V 9. Power saving mode.
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Wireless Microphone, CL FUN UHF Dual Wireless Handheld Mic System with Rechargeable Receiver and Battery, 164FT Range, Karaoke Microphone for Singing, Wedding, DJ, Party, Speech, Church, Class

  • ...s mic use, so you don't need to buy batteries to use. Our mic has an LED display so you can clearly see the battery, channel and signal..
  • 【Compatible with Multiple Devices】 Designed to work with devices with a 6.35mm (1/4") or 3.5mm (1/8") MIC input. Suitable for karaoke machines, mixers, singing machines, audio amplifiers, PA systems, powered speakers, voice amplifiers, multimedia equipment. Perfect for indoor, outdoor, karaoke, party, church, conference, wedding, speech, classroom, opening, promotion, DJ, stage, etc. Note: It is not compatible with laptops, iPads, mobile phones..
  • 【What You Get】 2 x UHF wireless microphones, 1 x receiver, 1 x built-in rechargeable battery, 4 x AA batteries, 1 x USB charging cable, 1 x 6.35mm (1/4") to 3.5mm (1/8" ) Gold plated converter, 2 x anti-skid rings, 1 x user manual. CL FUN is committed to providing customers with quality service. If you have any questions about the product, please contact us immediately and we will deal with it for you as soon as possible..
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Behringer ULTRAGRAPH PRO FBQ3102HD High-Definition 31-Band Stereo Graphic Equalizer with FBQ Feedback Detection System

  • Professional 31-band stereo graphic equalizer for live and studio applications.
  • Revolutionary FBQ Feedback Detection system instantly reveals critical frequencies and can also be used as audio analyzer.
  • Ultra-low noise 4580 operational amplifiers for highest signal integrity.
  • Dedicated mono subwoofer output with adjustable crossover frequency.
  • Additional sweepable high and low-cut filters for each channel remove unwanted frequencies, e.g. floor rumble, hiss etc..
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BOSS Audio Systems Elite BE2500.1 Monoblock Car Amplifier - 2500 Watts, 2 4 Ohm Stable, Class AB, Mosfet Power Supply, Great For Subwoofers

  • POWER: 2500 Watts Max x 1 @2-Ohms, 1250 Watts Max x 1 @4-Ohms.
  • CLASS A/B TOPOLOGY: Class A amplifiers have enormous amount of current flowing through its output transistors with no audio signal. Class B amplifiers have no current flowing through its outputs with no audio signal.
  • MOSFET POWER SUPPLY: A MOSFET is an electrical switch that allows the flow of electrical current. It controls the output voltage and current precisely by removing the output current sensing loss & eliminating all secondary feedback circuitry.
  • VARIABLE LOW-PASS CROSSOVER: Subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction.
  • SWITCHABLE BASS BOOST: Bass Boost allows you to adjust the low bass within the boost range to just the way you like it.
  • VARIABLE GAIN CONTROL: The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier.
  • DIMENSIONS: The BE2500. 1 is 10 inches in Depth, 7 inches in Width and 2. 3 inches in Height. It weighs 4. 5 lbs..
  • : BOSS Audio Systems provides a Powerful 6 Year Platinum Online Dealer so long as the purchase is made through . We strongly encourage professional installation o....
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Otofonix Elite Hearing Amplifier to Aid Hearing for Seniors & Adults, Noise Canceling (Right, Beige)

  • ✅ With a 35 dB Gain & 10 Levels of Superior Volume Control, our Elite Hearing amplifies are Perfect for Mild to Moderate Hearing Loss.
  • ✅ 4 Different Listening Programs to Accommodate Your Hearing Needs in a Variety of Environments.
  • ✅ Advanced Noise Cancelling, Feedback Suppression & Background Reduction.
  • ✅ Mini Sized Hearing Amplifiers with a Modern Design for a Near Invisible Look - 7 Batteries, 2 Sound Tubes, 3 Ear Dome Styles & Sizes Included.
  • ✅ Product Specialists Available for Support by Phone or Email Mon-Fri 9:00am - 5:30pm EST - 1 Year Warranty Provided.
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BOSS Audio Systems PT1600 2 Channel Car Amplifier - 1600 Watts, Full Range, Class A/B, 2-8 Ohm Stable, Mosfet Power Supply, Bridgeable

  • Power – 800 Watts Max x 2 @2-Ohms 400 Watts Max x 2 @4-Ohms 1600 Watts Max x 1 Bridged @4 Ohms.
  • Full Range – With a Full Range amplifier you not only have the option to run your speakers but also your subwoofers.
  • Class A/B Topology – Class ‘A’ amplifiers have enormous amount of current flowing through its output transistors with no audio signal Class ‘B’ amplifiers have no current flowing through its outputs with no audio signal.
  • Mosfet Power Supply – A MOSFET is an electrical switch that allows the flow of electrical current It controls the output voltage and current precisely by removing the output current sensing loss & eliminating all secondary feedback circuitry.
  • Variable Gain Control – The gain control is not for adjusting volume It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier.
  • Variable Bass Boost – With Variable Bass Boost you have the control of exactly how much BASS you want to pump out to your subwoofer(s).
  • Bridgeable – Dramatically increase the power output to you speakers and subwoofers by connecting two amplifier channels.
  • Specs – Dimensions 14” x 10 3” x 2 3” Weight 9 lbs.
  • – BOSS Audio Systems provides a powerful 6....
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