Reviews High Frequency Electrodeless

Goplus 7FT Artificial Christmas Tree Pre-Lit Optical Fiber Tree 8 Flash Modes W/ UL Certified Warm White LED Lights & Metal Stand

  • ...but also add the anti-crush capacity to the tree..
  • 8 Flash Modes - Goplus Pre-lit christmas tree has 8 different colorful flash modes, like combination, waves, sequential, flash and so one. You may choose appropriate mode with an adjusting button and the light color of optical fiber will change as well..
  • Pre-lit with Electrodeless LED Lights - This christmas tree is pre-lit with optical fiber tubes and low voltage electrodeless LED lights with 7 different colors, these electrodeless LED lights are energy-efficient and long lasting. All the lights of optical fiber will keep lighting only with the open of light source, even without the LED light. Pre-lit design saves your time to set up electric lines, you just need to put your favourite decorations on the tree..
  • Metal Stand - Goplus christmas tree uses metal stand instead of cheap plastic stand, and add plastic cover on the end of the stand. Through this design all we want to achieve is to add the stability of the tree and protect your floor..
  • Easy Setup - To finish the assembly of this tree it requires only few steps, after putting branches and metal stand together, all the tree requires you to do is straighten out the branches, so the tree will achieve the best effect..
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TOPINCN 6J1 Vacuum Electron Tube Valve Preamp Amplifier Board Headphone Amp Parts Preamplifier Musical Fidelity Kit AC12V 0.8A

  • Connect the 6J1 tube pre-amp between sound source and amplifier, it will effectively filter digital flavor, the music and human voice will be relatively good.
  • Eight 470UF capacitor filter is very clean, excellent power system to no hum, filaments are powered with DC 12V and need to be connected in series in order to reduce noise.
  • Coupling capacitor is electrodeless electrolytic capacitor with high frequency and low resistance.
  • Using DC 5.5*2.1 socket and AC 12V transformer, you can also use AC 12V transformer without plug, just need to weld the power cord onto the circuit board.
  • This kit comes in parts so you can assemble them together by yourself, enjoy the process of building your own tube amplifier.
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Electronic Amplifier, 6J1 Tube Valve Amplifier Tube Amplifier 6J1 Vacuum Electron Tube Valve Preamp Amplifier Board Amplifier Electronic Diy Kit 6J1 Tube Preamp

  • 【Definition】 A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal..
  • 【Function】 Connect this preamplifier to the audio source with 6J1 tubes and effectively filter the digital flavor. Tube amplifiers produce a warmer or more natural valve sound, make music and the human voice is relatively good..
  • 【Capacitor Filter / Coupling Capacitor】 Eight 470UF capacitor filters are very clean, excellent power supply does not cause humming, filaments are supplied with 12 V DC and must be connected in series to reduce noise. The coupling capacitor is a high frequency electrodeless electrolytic capacitor and low resistance..
  • 【Features】 With the DC 5.5 * 2.1 socket and 12V AC transformer, you can also use a 12V AC transformer without a plug. All you have to do is weld the power cord to the circuit board.This kit is available in parts so you can assemble it yourself and build your own tube amp..
  • 【Customer Service】 Thincol has always strived to provide customers with high quality products and outstanding customer service. If you encounter problems during the purchase or during use, would you contact us? then we will do our best to serve you and protect your interests..
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High Frequency Machine MQ Portable Handheld High Frequency Facial Wand

  • PACKAGE INCLUDE: The portable high frequency machine includes an insulated handle, English manual, 4Pcs electrodes attachments (tongue tube, bend....
  • USE FREQUENCY: It is recommended to use it 2-3 times a week to avoid prolonged use in the same area..
  • INSTRUCTIONS: Just insert the desired glass electrode into the high frequency wand, gently push in the electrode and it should just snap into place.....
  • FOUR METHODS: High frequency facial beauty machine methods can be chosen which are indirect high frequency, direct high frequency..
  • AFTER SALES SERVICE: If you are not completely satisfied with the MQ's high frequency facial machine, we will full refund without any questions, and....
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High Frequency Facial Wand MQ Portable Handheld High Frequency Machine

  • PACKAGE INCLUDE: The portable high frequency machine includes an insulated handle, English manual, 4Pcs electrode attachments (tongue tube, bend tube,....
  • INSTRUCTIONS: Just insert the desired glass electrode into the high frequency wand, gently push in the electrode and it should just snap into place.....
  • EFFICIENT: You can choose the different electrodes to your skin, mushroom tube for broad area.
  • FOUR METHODS: High frequency facial beauty machine methods can be chosen which are indirect high frequency, direct high frequency..
  • AFTER SALES SERVICE: If you are not completely satisfied with the MQ's high frequency facial machin, our friendly customer service team 24 hours are....
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XCFDP 15MHz DDS Signal Generator Counter,High Precision Dual-Channel Function Generator Arbitrary Waveform Frequency Meter 2.4’’ Screen 200MSa/s 15MHz

  • 【EASY TO OPERATE】Convenient operation interface, superior technical indicators and humanized graphic style. Its sine wave frequency output can....
  • 【SIGNAL STABILITY】The signal generator adopts large-scale FPGA integrated circuit and high-speed MCU processor, and the internal circuit adopts....
  • 【FREQUENCY METER FUNCTION】It supports scanning output from low frequency to high frequency or from high frequency to low frequency. The scanning....
  • 【HIGH PRECISION】This signal generator adopts dual-channel DDS signal and TTL electric level output to generate accurate, stable, low-distortion....
  • 【WIDE APPLICATION】The signal generator has excellent amplitude-frequency characteristics, small and beautiful appearance, and intuitive control....
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High Frequency Facial Wand - TUMAKOU Portable Handheld Blue High Frequency Facial Machine - 4 Different Blue Glass Tubes for Skin

  • 【Latest Upgraded Blue High Frequency Technology】TUMAKOU blue high frequency technology combines ORANGE and VIOLET effects into a universal tube,Then add TUMAKOU high frequency safe and 100% natural way technology to bring you the best results over time..
  • 【Enjoy Using 4 Blue Glass Tubes for Different Uses】This TUMAKOU high frequency facial wand comes with 4 different blue glass tubes to meet all your needs(1*Mushroom Tube, 1*Tube, 1*Bend Tube and 1*Tongue Tube), and let you focus on all the different areas. Mushroom tube is suitable for broader areas, the Tube is used for hair, Tongue tube is suitable for area around the eye, and Bend Tube is suitable for area around the nasal fossa..
  • 【Adjustable Level & Easy To Use】The energy level of our portable high frequency facial machine is adjustable,the higher level will bring you better results! But before using it for the first time, we recommended to test the strength by hand, and then use it where you want to use it. When you using, just insert the glass tube into the wand, push it in gently, then turn the high frequency face machine down to zero and turn it on, choose different levels to use accordi....
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(2) JBL JRX225 Dual 15\ Professional 4000w Passive DJ/PA Speakers 4 Ohm JRX 225

  • Features: JBI JRX225 Dual 15" 2000 Watt Passive DJ/PA Speaker. Dual JBI low frequency drivers with a 64 mm (2.5 in) diameter edgewound ribbon voice coil for greater efficiency and power handling. JBI 2414H-C 25 mm (1 in) polymer diaphragm compression driver.
  • Advanced network topology crossover design. High-voltage capacitors and inductors with massive cores and heavy gauge wire. Progressive Transition high frequency waveguide. 19 mm (.75 in) MDF (Medium Density Fiberboard) enclosure.
  • SonicGuard protects the high frequency driver from excess power without interrupting the performance. Non-resonant, all-steel handles. 18-gauge hexagon perforated, steel grille Dual-angle pole-mount socket allows the speaker to tilt 10. Details: Power Rating : 500 W / 2000 W.
  • Frequency Range (-10 dB) : 42 Hz - 18 kHz. Frequency Response (3 dB) : 62 Hz - 13 kHz. Sensitivity (1w/1m) : 100 dB SPL. Nominal Impedance : 4 ohms. Recommended Amplifier Power : 500 W to 1000 W into 4 ohms. Maximum SPL : 133 dB. Nominal Dispersion : 90 x 50. Crossover Frequency : 2.2 kHz.
  • Dimensions (H x W x D) : 1092 mm x 464 mm x 432 mm (43 in x 18.3 in x 17 in). Weight : 42.6 kg (94 lb). High Frequency Driver : JBI 2414H-C , 1" exit compression driver mounted on Progressive Transition Waveguide. Low....
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Professional Skin Therapy Wand 100240V High Cycle Beauty Therapy Upgraded Version Women High Frequency Facial Machine Home Use US Plug

  • ANALGESIC PROPERTIES: It helps calm and has analgesic properties. Produce ozone , help wound healing, inhibit pores..
  • EASILY USE: Select the required glass tube, insert the required glass tube into the HF machine, and gently push it into place. Please adjust the volume to beginning level before use..
  • DIFFERENT FREQUENCY: You can choose indirect high frequency or direct high frequency based on your specific needs. Use it 2 to 3 times a week..
  • HIGH FREQUENCY TECHNOLOGY: High frequency face stick is a new high frequency technology. It is a safe, meet your various needs and is very effective..
  • BALANCES PH: Relieves discomfort and balances PH. Accelerate blood circulation, promote metabolism. It has the effect of firming skin..
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(2) JBL Pro JRX212 12\ 2000w Professional Passive PA/DJ Speakers 8 Ohm JRX 212

  • Features: JBI Pro JRX212 12" 1000 Watt 8 Ohm Passive PA/DJ Speaker. JBI 12 in low frequency driver with a 64 mm (2.5 in) diameter edge wound ribbon voice coil. JBI 2414H-C 25 mm (1 in) polymer diaphragm compression driver. Advanced network topology crossover design.
  • High-voltage capacitors and inductors with massive cores and heavy gauge wire. Progressive Transition high frequency waveguide. 19 mm (.75 in) MDF (Medium Density Fiberboard) enclosure. SonicGuard protects the high frequency driver from excess power without interrupting the performance..
  • Non-resonant, all-steel handles. 18-gauge hexagon perforated, steel grille Dual-angle pole-mount socket allows the speaker to tilt 10. Specifications: Power Rating : 250 W / 1000 W. Frequency Range (-10 dB) : 60 Hz - 20 kHz. Frequency Response (3 dB) : 80 Hz - 18 kHz.
  • Sensitivity (@1m) : 98 dB SPL (1w/1m). Nominal Impedance : 8 ohms. Recommended Amplifier Power : 250 W to 500 W into 8 ohms. Maximum SPL : 128 dB. Nominal Dispersion : 90 x 50. Crossover Frequency : 2.1 kHz. Dimensions (H x W x D) : 584 mm x 399 mm x 325 mm (23 in x 15.7 in x 12.8 in).
  • Weight : 19.5 kg (43 lb). High Frequency Driver : JBI 2414H-C 1" exit compression driver mounted on Progressive Transition Waveguide. Low Frequency Driver : JBI M....
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KZ EDA Dynamic Driver Earbuds Combos,3 in 1 in Ear Monitor Wired Phone Earphones Headphones, HiFi Music IEM Headsets with Removable Cord Without Mic

  • THREE PAIRS OF EARBUDS – KZ EDA dynamic driver earphones combos set is tuned by KZ accoustic team many times for the outstanding sound quality. The price of one set of KZ EDA in ear headphones is equal to three pairs of earphones and three music styles to meet your listening needs. The low-frequency dynamic performance is excellent, the mid-high frequency is upgraded, and the three-frequency connection is smooth..
  • THE GOLD EARBUDS WITH EXTRA BASSY SOUND – Focus on optimizing the mid-lows, making the bass strong and elastic. Deep dive, strong and powerful drum beats, excellent low frequency transient performance, suitable for DJ and songs with heavy metal rhythm. The magnetic gap of 0.15MM brings stronger output performance, lower distortion rate, and more realistic restoration of sound..
  • THE SILVER EARBUDS WITH BALANCED SOUND – Referring to the Harman curve, the three-frequency is balanced and powerful, the vocals are clear and sweet, the low-frequency dives and the high-frequency is transparent, and the sound texture is strong, suitable for pop music and other genres. Customized 0.035MM diameter high tension voice coil wire makes the vibration frequency more stable and efficient..
  • TRANSLUCENT CYAN WITH HIGH-RESOLUTION SOUND – On the basis of ex....
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HiFiGo LETSHUOER x GIZAUDIO Galileo Dual-Driver Hybrid in-Ear Monitor, 10mm Dynamic Driver + Balanced Armature Unit IEMs in-Ear Earphones (4.4mm Plug)

  • Precise & Reliable 3D Printed Acoustic Cavity Structure: The acoustic cavity structure of Galileo earphones is designed with high-precision 3D printing technology. The complex acoustic cavity is molded with resin materials simultaneously to achieve more accurate physical frequency division..
  • Synthetic resin panel from the starry sky: Galileo uses an ink-painted synthetic resin panel, with azure blue, dark brown, and silver-white complementing each other as if the Milky Way and stars are fixed in it. With the surface treatment of actinic resin, each earphone has a unique brilliance flow, which is as eye-catching as the twinkling stars..
  • 10mm liquid silicone & Al-Mg Alloy Dynamic Driver + Sonion 2389 balanced armature + electronic independent dual-frequency crossover: In order to meet the pursuit of excellent sound performance, Galileo houses a 10mm liquid silicone + Al-Mg alloy dynamic driver unit and a Danish Sonion 2389 balanced armature driver unit as the core configuration. The pair is designed with an independent electronic frequency division and cavity for each driver unit. The tube ensures a precise sound phase and extremely low distortion in the outpu....
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Rockville REQ231 Dual 31 Band 1/3 Octave Graphic Equalizer+3 Way Mono Crossover

  • ...z effective equalization range. Constant Q filters. Selectable 6dB or 12dB cut or boost range.
  • Output level LEDs (-10 to +17 dB). Bypass switch with status LED. Ground lift switch. Balanced XLR input/output. Subwoofer out. Channels: 2 (stereo). Connectors: XLR balanced inputs and outputs. Bands: 31 per channel. Frequency Centers: 20 Hz, 25 Hz, 31.5 Hz, 40 Hz, 50 Hz, 63 Hz, 80 Hz, 100 Hz, 125 Hz, 160 Hz, 200 Hz, 250 Hz, 315 Hz, 400 Hz, 500 Hz, 630 Hz, 800 Hz, 1 kHz, 1.25 kHz, 1.5 kHz, 2 kHz, 2.5 kHz, 3.15 kHz, 4 kHz, 5 kHz, 6.3 kHz, 8 kHz, 10 kHz, 12.5 kHz, 16 kHz, 20 kHz.
  • Control Range: Selectable +/-12dB 0r +/-6dB. Input Impedance: 50k ohms. Output Impedance: 600 ohms. Maximum Output Level: +21dB. Level Control: +/- 10 dB. Signal to Noise: >93 dB. Distortion: 0.005%. Roll-off filters: 18dB/octave, Butterworth. Power Consumption: 15 watts. Weight Unpacked: 7.00 lbs. Weight Packed: 9 lbs. Width Packed: 5.87". Height Packed: 20. 5". Depth Packed: 9.62". Features of RX230: RockvilIe RX230 2-way Stereo / 3-way Mono rack mountable crossover.
  • Ability to mix 2 channels output. 24dB/Octave filters. Mute switches. Channel Gain Control: 0 to +12 dB. Low Frequency Level Control: -to +6 dB. High Frequency Level Control: -to +6 dB. Low Frequency to High Frequen....
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