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B008HAQT2S Price: $407.39 Score: 1000.000 Category: Electronics Rating: 3 Votes: 14 Find similar products Acoustic Revive RR-777 Ultra Low Frequency Generator. The Schumann Resonance is a resonance frequency that exists in the Earth's electromagnetic cavity; i.e. between terrestrial surface and ionosphere. German physicist W.O.Schumann first detected the resonant properties of this terrestrial cavity in 1954. It is said that the Schumann Resonance is a breathing phenomenon of the Earth that is lasting from old time of the Earth creation and is giving a positive effect to the human brain. Humans, animals and plants have become accustomed to this frequency of 7.83Hz over a very long period of evolution. But recently, many unnatural radio waves and electromagnetic waves disturb this frequency of 7.83Hz, it has changed the influence that it has on us. Our research was started from the point of view that [If Schumann Resonance Waves have a positive effect on the human brain, how does it react to human hearing?], it became clear that there was a surprising effect to both of hearing and sight. Then, we developed and manufactured a device to generate the 7.83Hz electric wave artificially, the Ultra-low Frequency generator RR-777 (Patent Pending).	B07FF25KRY Availability: Currently unavailable Score: 5.714 Category: Electronics Rating: 3.9 Votes: 38 Find similar products Nobsound 2018 Schumann Wave 7.83HZ Ultra-Low Frequency Pulse Generator for Relax Sleep. Instruction: Schumann wave itself does not make any sound or directly act on the sound to improve the quality of sound or vision. It's working on the space environment, making the people's physical and mental relaxed to improve the body's perception of sound and images and the human body health and working efficiency, it also has a good effect on insomnia, mental strain and so on. Functions: For audio-visual space - to enhance the sound field and audio-visual effects For the bedroom - to help sleep soothe the nerves, treatment of insomnia For the office - to relax and improve work efficiency For the create space - to improve creative inspiration For the tea ceremony, spirituality, realization space - to rest body and mind We strongly recommend you to buy 2 Schumann Wave Pulse Generator for better experience and remarkable effect. Specifications: Frequency: 7.83Hz Rated voltage: DC 12V Rated current: 1A Applicable voltage: 100V-240V Universal Size: 1179329 mm / 4.613.661.14 in Net Weight: 0.21 Kg / 0.46 lb Package Weight: 0.4 kg / 0.88 lb Packing List: 1 * Schumann Resonance Pulse Generator 1 * Power Supply.
B00BC3A0K4 Price: $399 Score: 4.975 Category: Electronics Rating: 1 Votes: 1 Find similar products KJB NG3000 Rabbler Noise Generator. Rabbler Noise Generator KJB.	B00AZTTW7S Availability: Currently unavailable Score: 4.831 Category: Electronics Rating: 5 Votes: 1 Find similar products XXX Ground Loop Isolator, Model#: XR16. XXX 160 Watt High Frequency Mini Tweeter.
B07L5CRQ7T Price: $649.76 Score: 4.695 Category: Electronics Rating: 4 Votes: 18 Find similar products Reisong - BOYUURANGE A20 Hi-Fi Intergrated Amplifier KT88 Tube Single-end Class A 4ND VU Meter. You should take about 30-100h time to operate the amp.RUN-IN to the amp gives it's best and stable sound.so during the first 100h use time the sound maybe is not the best,you can also use your own run-in method. Specifications: Output Power: 8W * 2 (Ultra-linear connection) Frequency response: 20Hz-35KHz Output Impedance: 4,8Ω Total harmonic distortion: ≤ 1% (1kHz) Input Sensitivity: 750MV Input impedance: 100KΩ (three sets of input signal) Voltage amplification: Dawn 6J8PJ × 2. Power output tube: KT88 × 2. Rectifier tube: 5Z3PA-T × 1 Dimensions (W×D×H): 366×300 (including knob) × 185mm SNR: 89dB Weight: about 16.5 kg (114 power transformers, export version) Gross weight: 18kg Power Supply Voltage: AC 110V-120V/50Hz-60Hz(For United States） Features: With power tube current monitoring circuit, tube replacement upgrade ease. Medical grade 5Z3PA-T rectification. Imported 0.35 core output amplifier audio dedicated core, core stack thickness 86-50, A20 flux of 13,000 Output transformer potting techniques, ensure that the output of the amplifier stability and reliability Double chassis design，not easy deformed. Output amplifier with a new imported 0.35 core manufacturing, high-purity copper wire package enameled, layered segmentation, string and connection method Imported 0.35 thick core manufacturing power amplifiers Output amplifier with high-grade stretch amplifier housing cover. Power Transformers: new imported 0.35, stack thickness 60MM (114-60). Output amplifier core: core 0.35 new imported thick high silicon (86-50). Japanese production of ALPS potentiometer. Chassis: mirror stainless steel chassis.	B001KONGBA Availability: Currently unavailable Score: 4.630 Category: Electronics Rating: 5 Votes: 1 Find similar products Channel Vision 20dB Attenuator. .
B08FZ5LL7M Availability: Currently unavailable Score: 4.545 Category: Electronics Rating: 3.9 Votes: 15 Find similar products Mini Small Stereo Headphone Amplifier, Gain 20dB Phono Turntable Phonograph preamp, Headphones Output. It is good.	B00005QZ16 Availability: Currently unavailable Score: 4.545 Category: Electronics Rating: 3.2 Votes: 11 Find similar products Acoustic Research TDS202 TDS Sound Enhancement Sound System (1-Speaker, Silver). From the Manufacturer The Sound Enhancer TDS202 from Acoustic Research (AR) is the first consumer product to feature True Dimensional Sound (TDS) technology. Originally introduced to the professional audio market in 1997, TDS unlocks hidden elements, such as background instruments and vocals, unintentionally buried in the mix. Patented circuitry provides an increase in voltage that, when coupled with the spectral decay effect, enhances the signal with a wider, more detailed soundfield. Sound Enhancer--which has been a key component in the production of soundtracks for such popular films as U-571 , The Mummy , and Jerry Maguire --uses only passive circuitry, ensuring the greatest possible signal integrity and purity of sound. Its stylish, sleek design--measuring 7.875 inches wide by 5.125 inches deep and 2.25 inches high--fits most existing audio racks or home entertainment centers. AR's Sound Enhancer requires no adjustments. L/R inputs and outputs simplify setup: just plug in a two-channel feed from a CD player, DVD player, MP3 player, or other audio source. When processed by the Sound Enhancer, the least audible frequencies are increased in amplitude without reshaping the loudness contour, revealing subtle elements in the original recording while managing dwell time; that is, the duration for which newly perceptible frequencies can be heard. Audio is then fed from the output jacks of the Sound Enhancer to your receiver, amplifier, or preamp. AR's Sound Enhancer is designed for all levels of music enthusiasts, from casual listeners to dedicated audiophiles. Given that the process of enhancing subtle nuances via an increase in voltage results in an improvement over a wide frequency range--20 to 20,000 Hz--the difference is noticeable in all audio components, from boomboxes to state-of-the-art DVD players.
B00D1QRPHG Price: $49.98 Score: 4.525 Category: Electronics Rating: 3.2 Votes: 38 Find similar products Tecsun PL-310 fm/am Stereo World Band Dsp Receiver. By-laws: PL-310's basic technical indicators: ● Frequency Range Frequency Modulation (FM) standard frequency coverage: Russia, part of the campus radio: 64 ~ 108 MHz Europe and the United States: 87.5 ~ 108MHz, Japan: 76 ~ 108MHz Short-wave (SW) 2300 ~ 21950 kHz Medium-wave (MW) in Asia, Africa and Europe: 522 ~ 1620 kHz North America: 520 ~ 1710 kHz Long-wave (LW) 153 ~ 513 kHz ● Noise limit sensitivity Frequency Modulation (FM) (S / N = 30dB) >2 uV Medium-wave (MW) (S / N = 26dB) > 1 mV / m Long-wave (LW) (S / N = 26dB) >10 mV / m Short-wave (SW) (S / N = 26dB) > 20 uV ● Optional: Frequency Modulation (FM)> 60 dB Medium-wave (MW)> 60 dB Long-wave (LW)> 60 dB Short-wave (SW)> 60 dB ● FM stereo separation: better than 35 dB ● Output Power: Speaker: 350 mW Headset: 8-32 ohm stereo headset ● Storage Memory: Total 500 Frequency Modulation (FM) 100 Ge Medium-wave (MW) 100 Ge Long-wave (LW) 100 Ge Short-wave (SW) 200 Ge ● Naoxing mode: radio or buzzer downtown downtown ring ring ● Quiescent Current FM <25 mA MW / LW <23 mA SW <35 mA Shutdown standby <90 uA ● speaker size and type of Speaker Dimensions: Diameter 57 mm / 16Ω cone speaker ● Power Supply : External Power: DC 5V 300 mA USB Adapter ● Physical Size: W 141 × high 87 × thickness 30 (mm) ● Weight: About 187g (without batteries) ● Random Annex: Stereo headphones, protective cover, manual, certification, service guarantees, after-sales follow-up survey form. ● Three kinds of colors: black, silver, gray. Colors indicate the time of purchase. Buyers did not specify the default to any color. ● In Stock.this item ships for FREE with Super Saver Shipping.	B00NKWV0IQ Availability: Currently unavailable Score: 4.505 Category: Electronics Rating: 3.8 Votes: 8 Find similar products SMAKN LM386 Audio Amplifier Module 200 Times 5-12V 10K Adjustable Resistance. Product Name : Audio Amplifier Module; Chip : LM386 Magnification Times : 200; Power Supply : 5-12V PCB Board Size : 41 x 13mm/1.6 x 0.5 (L*W); Material : Electric Part Net Weight : 5g 1. Onboard LM386 Chip.With 200 multiplier benefits circuit design 2. On-board speaker wire holder 3. On-board 10K variable resistor, you can adjust the Amplification volume. 4. Onboard power indicator, the main feet of the chip has been leaded, can input audio signal directly . 5. Operating voltage: 5 ~ 12V Package Content : 1 x LM386 Audio Amplifier Module.