Top A Plus Frequency

ADC - 619ST Adscope Lite 619 Ultra Lightweight Clinician Stethoscope with Tunable AFD Technology Tactical

  • INCREDIBLE ACOUSTICS: Extra-deep bell for unsurpassed low-frequency response, ultra-sensitive diaphragm for greater amplification and crisper high-frequency transmission. AFD technology further enhances acoustic response: use light pressure for low frequencies, firm pressure for high frequencies. Individually acoustic tested in the USA..
  • ULTRA LIGHTWEIGHT: Weighs just 3.7 oz (105 g) for the ultimate in wearing comfort. Overall length 30 inches..
  • COMPACT & COMFORTABLE: Clinician headset features silicone reinforcing yoke molded into flexible phthalate-free PVC tubing, aluminum alloy binaurals, and Adsoft Plus snap-on silicone eartips for the ultimate in wearing comfort and acoustic seal..
  • ACCESSORIES INCLUDED: 1 additional pair of Adsoft Plus eartips and a complimentary scope ID tag..
  • LIFETIME WARRANTY: Includes complimentary refurbishment and free parts forever..
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ADC - 619FL Adscope Lite 619 Ultra Lightweight Clinician Stethoscope with Tunable AFD Technology Rose Quartz

  • INCREDIBLE ACOUSTICS: Extra-deep bell for unsurpassed low-frequency response, ultra-sensitive diaphragm for greater amplification and crisper high-frequency transmission. AFD technology further enhances acoustic response: use light pressure for low frequencies, firm pressure for high frequencies. Individually acoustic tested in the USA..
  • ULTRA LIGHTWEIGHT: Weighs just 3.7 oz (105 g) for the ultimate in wearing comfort. Overall length 30 inches..
  • COMPACT & COMFORTABLE: Clinician headset features silicone reinforcing yoke molded into flexible phthalate-free PVC tubing, aluminum alloy binaurals, and Adsoft Plus snap-on silicone eartips for the ultimate in wearing comfort and acoustic seal..
  • ACCESSORIES INCLUDED: 1 additional pair of Adsoft Plus eartips and a complimentary scope ID tag..
  • LIFETIME WARRANTY: Includes complimentary refurbishment and free parts forever..
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ADC - 619FG Adscope Lite 619 Ultra Lightweight Clinician Stethoscope with Tunable AFD Technology, Blue Diamond

  • INCREDIBLE ACOUSTICS: Extra-deep bell for unsurpassed low-frequency response, ultra-sensitive diaphragm for greater amplification and crisper high-frequency transmission. AFD technology further enhances acoustic response: use light pressure for low frequencies, firm pressure for high frequencies. Individually acoustic tested in the USA..
  • ULTRA LIGHTWEIGHT: Weighs just 3.7 oz (105 g) for the ultimate in wearing comfort. Overall length 30 inches..
  • COMPACT & COMFORTABLE: Clinician headset features silicone reinforcing yoke molded into flexible phthalate-free PVC tubing, aluminum alloy binaurals, and Adsoft Plus snap-on silicone eartips for the ultimate in wearing comfort and acoustic seal..
  • ACCESSORIES INCLUDED: 1 additional pair of Adsoft Plus eartips and a complimentary scope ID tag..
  • LIFETIME WARRANTY: Includes complimentary refurbishment and free parts forever..
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Nooelec NESDR Smart XTR HF Bundle: 100kHz-1.7GHz Software Defined Radio Set for LF/HF/UHF/VHF. Includes NESDR Smart XTR RTL-SDR, Ham It Up Plus Upconverter, 3 Antennas, Balun, Adapters

  • A full, wide-band RF solution for those interested in getting started with software defined radio and with a keen interest in HF bands. Frequency range is 100kHz-1.7GHz (with a frequency gap near 1.1GHz).
  • The NESDR SMArt XTR HF Bundle utilizes a well-designed upconverter--the Ham It Up Plus--to receive HF, instead of utilizing a direct sampling hack as with most other low cost HF SDRs. This results in a vastly different HF experience--much better performance, and no loss of gain controls.
  • Included is a Ham It Up Plus upconverter, installed in a custom silver aluminum enclosure with fully build noise source circuit.
  • an NESDR SMArt XTR RTL-SDR, 3 antennas, an impedance matching balun for longwire and dipole antennas, and interconnect adapters and cables.
  • Amazon-exclusive bundle! Only available for a limited time. Due to the frequency gap this is NOT recommended for ADS-B. Instead try our NESDR SMArt HF Bundle (Amazon product code B0747PX3NZ).
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ADC - 603BK Adscope 603 Premium Stainless Steel Clinician Stethoscope with Tunable AFD Technology Black 3001697

  • INCREDIBLE ACOUSTICS: Proprietarty adjustable frequency design (AFD) technology enhances acoustic performance.
  • use light pressure for low frequencies, firm pressure for high frequencies. Individually acoustic tested in the USA.
  • RUGGED: Combination chestpiece is precision CNC machined to exacting tolerances from surgical stainless steel. Non chill bell and diaphragm provide wide-frequency response and patient comfort.
  • COMPACT & COMFORTABLE: Clinician headset features silicone reinforcing yoke molded into flexible phthalate-free PVC tubing, stainless steel binaurals, and Adsoft Plus snap-on silicone eartips for the ultimate in wearing comfort and acoustic seal. Overall length 30 inches, weight 5.8 oz.
  • ACCESSORIES INCLUDED: 2 additional pairs of Adsoft Plus eartips, accessory storage pouch, and a complimentary scope ID tag.
  • LIFETIME WARRANTY: Includes complimentary refurbishment and free parts forever. Assembled, inspected, and packaged in the USA.
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ADC - 603IST Adscope 603 Premium Stainless Steel Clinician Stethoscope with Tunable AFD Technology, Iridescent Tactical

  • INCREDIBLE ACOUSTICS: Proprietarty adjustable frequency design (AFD) technology enhances acoustic performance.
  • use light pressure for low frequencies, firm pressure for high frequencies. Individually acoustic tested in the USA.
  • RUGGED: Combination chestpiece is precision CNC machined to exacting tolerances from surgical stainless steel. Non chill bell and diaphragm provide wide-frequency response and patient comfort.
  • COMPACT & COMFORTABLE: Clinician headset features silicone reinforcing yoke molded into flexible phthalate-free PVC tubing, aluminum binaurals, and Adsoft Plus snap-on silicone eartips for the ultimate in wearing comfort and acoustic seal. Overall length 30 inches, weight 5.8 oz.
  • ACCESSORIES INCLUDED: 2 additional pairs of Adsoft Plus eartips, accessory storage pouch, and a complimentary scope ID tag.
  • LIFETIME WARRANTY: Includes complimentary refurbishment and free parts forever. Assembled, inspected, and packaged in the USA.
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Behringer 904B VOLTAGE CONTROLLED HIGH PASS FILTER Legendary Analog High Pass VCF Module for Eurorack

  • Vintage-sounding 904B High Pass VCF module from the '70s.
  • Authentic reproduction of the circuitry from the "Modular 55 & 35" Series.
  • Artist roster includes world's most famous pop, rock and jazz musicians.
  • Audio in and out connectors plus 3 CV inputs for control of frequency.
  • Frequency control and range switch allows full manual control of cutoff frequency.
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KWD808-I Stimulator Machine 50Hz Electric Acupuncture Stimulator Massager Machine 6 Channels Outputs Patch Massager Care Device 100-240V Pulse Electrotherapy Acupuncture Instrument

  • ✅【SPECIFICATIONS】Output pulse circuit: 6 outputs. Input power: .
  • The fuse is slow-blow at 0.5A. Output pulse frequency: 1.2Hz~55Hz, the error range is ±30% continuously adjustable. Output pulse width: 0.6±0.15ms. Power supply voltage scope: AC 110~240V, 50Hz.
  • DC 9V+5%, 9V-10%. Atmospheric pressure range: 500hpa to 1060 hpa. Size: 21.7cmx16.7cmx7.5cm, weight: 1390g..
  • ✅【ADJUSTABLE FREQUENCY INTENSITY】The frequency and intensity can be adjusted. Adjustable sensitivity probe point locator. 6 outputs, plus 1 detection socket..
  • ✅【5 KINDS OF PULSE WAVES】There are 5 kinds of pulse waves to choose from: continuous wave, dense dispersive wave, discontinuous wave, ripple wave, breathing wave, with a wide range of functions..
  • ✅【OPERATION OUTPUT PROTECTION】The device outputs pulses, and the treatment is very safe and efficient. A wave with low voltage, low frequency, and the same frequency range as the human body. It has the characteristics of low voltage, low frequency, two-way, etc. The operation output protection device is particularly safe to operate and safe to use..
  • ✅【PROFESSIONAL SERVICE】If you have any questions or if you receive unqualified or damaged products, please contact us timely and we will handle them immediat....
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ADC Adscope 604 Premium Pediatric Clinician Stethoscope with Tunable AFD Technology, Lifetime Warranty, Light Blue

  • INCREDIBLE ACOUSTICS: Proprietary adjustable frequency design (AFD) technology enhances acoustic performance.
  • use light pressure for low frequencies, firm pressure for high frequencies. Individually acoustic tested in the USA..
  • RUGGED: Combination pediatric chestpiece is precision CNC machined to exacting tolerances from surgical stainless steel Non chill 1 1/8" bell and 1 3/8"diaphragm provide wide frequency response and patient comfort.
  • COMPACT & COMFORTABLE: Clinician headset features silicone reinforcing yoke molded into flexible phthalate-free PVC tubing, stainless steel binaurals, and Adsoft Plus snap-on silicone eartips for the ultimate in wearing comfort and acoustic seal Overall length 30 inches, weight 4 6 oz.
  • ACCESSORIES INCLUDED: 2 additional pairs of Adsoft Plus eartips, accessory storage pouch, and a complimentary scope ID tag.
  • LIFETIME WARRANTY: Includes complimentary refurbishment and free parts forever Assembled, inspected, and packaged in the USA.
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ADC 603COP Adscope 603 Premium Stainless Steel Clinician Stethoscope with Tunable AFD Technology, Lifetime Warranty, Copper

  • INCREDIBLE ACOUSTICS: Proprietarty adjustable frequency design (AFD) technology enhances acoustic performance.
  • use light pressure for low frequencies, firm pressure for high frequencies. Individually acoustic tested in the USA.
  • RUGGED: Combination chestpiece is precision CNC machined to exacting tolerances from surgical stainless steel. Non chill bell and diaphragm provide wide-frequency response and patient comfort.
  • COMPACT & COMFORTABLE: Clinician headset features silicone reinforcing yoke molded into flexible phthalate-free PVC tubing, aluminum binaurals, and Adsoft Plus snap-on silicone eartips for the ultimate in wearing comfort and acoustic seal. Overall length 30 inches, weight 5.8 oz.
  • ACCESSORIES INCLUDED: 2 additional pairs of Adsoft Plus eartips, accessory storage pouch, and a complimentary scope ID tag.
  • LIFETIME WARRANTY: Includes complimentary refurbishment and free parts forever. Assembled, inspected, and packaged in the USA.
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ADC - 603ST Adscope 603 Premium Stainless Steel Clinician Stethoscope with Tunable AFD Technology, Lifetime Warranty, Tactical

  • INCREDIBLE ACOUSTICS: Proprietarty adjustable frequency design (AFD) technology enhances acoustic performance.
  • use light pressure for low frequencies, firm pressure for high frequencies. Individually acoustic tested in the USA.
  • RUGGED: Combination chestpiece is precision CNC machined to exacting tolerances from surgical stainless steel. Non chill bell and diaphragm provide wide-frequency response and patient comfort.
  • COMPACT & COMFORTABLE: Clinician headset features silicone reinforcing yoke molded into flexible phthalate-free PVC tubing, stainless steel binaurals, and Adsoft Plus snap-on silicone eartips for the ultimate in wearing comfort and acoustic seal. Overall length 30 inches, weight 5.8 oz.
  • ACCESSORIES INCLUDED: 2 additional pairs of Adsoft Plus eartips, accessory storage pouch, and a complimentary scope ID tag.
  • LIFETIME WARRANTY: Includes complimentary refurbishment and free parts forever. Assembled, inspected, and packaged in the USA.
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ADC - 601BK Adscope 601 Convertible Cardiology Stethoscope with Tunable AFD Technology For Adult and Pediatric Patients Black

  • INCREDIBLE ACOUSTICS: Proprietarty adjustable frequency design (AFD) technology enhances acoustic performance.
  • use light pressure for low frequencies, firm pressure for high frequencies. Individually acoustic tested in the USA..
  • VERSATILE: Convertible cardiology stainless steel chestpiece includes fixed adult diaphragm and threaded pediatric diaphragm that easily converts to an open bell for low-frequency sounds. Overall length 27 inches, weight 8.5 oz..
  • HIGH PERFORMANCE: Cardiology headset features dual-channel phthalate-free tubing, large-bore stainless steel binaurals, and Adsoft Plus snap-on silicone eartips for the ultimate in wearing comfort and acoustic seal..
  • ACCESSORIES INCLUDED: 2 additional pairs of Adsoft Plus eartips, accessory storage case, and a complimentary scope ID tag..
  • LIFETIME WARRANTY: Includes complimentary refurbishment and free parts forever. Assembled, inspected, and packaged in the USA..
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