Best Frequency Response Meter

Decibel Meter, TACKLIFE Digital Sound Level Meter 30-130dB(A) Range with Sound Simulation, Max/Min/Data Hold, Fast/Slow Mode, Self-Calibration Noise Meter, Battery Included -MLM02

... considered as reminding by showing “UN” when less than 30 dB or “OL” when more than 130 dB.
The noise meter will auto shut-down after 10 mins of inactivity, which can be cancelled successfully by pressing power button and fast/slow button simultaneously when “COU” shown.
▲HIGHER ACCURATE & WIDER FREQUENCY RANGE – Calibrated to the standard source in advance by the factory, this meter helps to get a more accurate result in various environments, like factories, workshops, home, schools, road, audio etc.
Frequency range 31.5 to 8 KHz, accuracy: ±1.5 dB, resolution : 0.1 dB.
▲WHAT YOU GET – 1x TACKLIFE Sound Level Meter MLM02 (windscreen included), 1x 9V ( 6F22 ) battery (low power indicator available), 1x user manual (If you have any problem about it, please do not hesitate to contact us , our Support Team will solve your problems in time).

Designed for studio, broadcast and mobile applications, and carefully crafted with key metal components for lasting durability. Magnet-Neodymium.
Uses the same large aperture drivers as ATH M50x headphones, delivering exceptional clarity, extended frequency range, and accurate bass response.
Low profile, closed back, on ear design provides excellent sound isolation and a great fit.
Memory foam ear pads and headband provide excellent comfort and durability.
Comes with 3 interchangeable cables (1.2 meter, 3.0 meter coiled, 3.0 meter straight, and 1.2 meter straight each with a 3.5 millimeter (1/8 inches) mini plug).
Also comes with a 6.3 millimeter (1/4 inches) screw on adapter and a protective carrying pouch.

High Frequency Transducer: 1.25" × 2.4" (3.2cm × 6.1cm) Folded Motion XT Transducer with 4.5" x 2.75" (11.4cm × 7cm) diaphragm.
Mid Frequency Transducer: 6.5” (16.5cm) aluminum cone with cast polymer basket. Sealed chamber format. Rigid structured dust cap to reduce cone break-up modes..
Low Frequency Transducer: Two 8” (20.3cm) aluminum cone with cast aluminum basket. Non-resonant asymmetrical chamber format. Rigid structured dust cap to reduce cone break-up modes..
Components: Custom air core coil and low DCR steel laminate inductors. Polypropylene film capacitors in series and low DF electrolytic capacitors in parallel. Tweeter thermal/current protection..
Inputs: Custom 5-way bi-wire tool-less binding posts.
Frequency Response: 35–25,000 Hz ±3dB, Recommended Amplifier Power: 20-400 watts per channel.
Horizontal Dispersion: 80°, Vertical Dispersion: 30°, Sensitivity: 94 dB/2.83 volts/meter.
Impedance: 4 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers..
Weight: 66 lbs., Dimensions: 48" x 11.4" x 14.4".

High-frequency transducer: XStat CLS electrostaic transducer.
Panel dimensions: 40" x 8.6" (102cm x 22cm), Radiating area: 344 in2.
Low-frequency driver: Two 8” (20.3 cm) high excursion, high-rigidity paper cones with extended throw driver assembly, non-resonance asymmetrical chamber format, bass reflex.
Vojtko topology filter utilizing custom air core coil and low DCR steel laminate inductors, polyester film capacitors in series, and low DF electrolytic capacitors in parallel.
Frequency response: 41–22,000 Hz ±3dB, Sensitivity: 91 dB/2.83 volts/meter.
Recommended amplifier power: 20-400 watts per channel.
Dimensions: 59.2 x 9.4 x 20.7 (150.3cm x 23.8cm x 52.6cm), Weight: 52lbs. (23.6kg) each.

Measure All EMF Radiations: AC magnetic, AC electric, and RF radio frequency filed for detecting Power line, Smart meter, Cell phone, Bluetooth, Microwave etc..
Clear and Informative Readings: 2.4" IPS screen display with Hold, Max, Peak, Alarm text and color features to comprehend the full scale of the EMF radiation.
Histograph View and Sound Feature: Intuitively show the signal changing process and help to find signal source direction or record bursts.
Frequency Response: Detects EF, MF, 5G network signal and RF from 50hz up to 8Ghz. Note: Please hold the meter uprightly and do not cover the top sensors.
Theme Feature, Highlight Backlit and Rechargeable: Black color theme, constant or highlight backlight feature are available. Built in rechargeable battery.

Unrestrained and portable active Stereo speaker.
Free from the confines of wires and Chords.Channel frequency response: 62 - 20000 Hz.
Maximum sound pressure level is 100 dB at 1 meter.