Reviews Audio Engineering Principles

CGOLDENWALL Visible Spectrophotometer 721G Lab Equipment Wavelength Range:340-1000nm Spectral Bandwidth: 5nm

  • This Visible Spectrophotometer adopts a microprogramming technology. It can be used in a material determination, a quantitative analysis in a visible spectrum field. This equipment is a multipurpose analyzer which is necessary for all general labs. It applies to the medical health, clinical examination, biochemistry, petrochemical engineering, environmental protection, quality control’s department and teaching lab of universities and colleges etc..
  • Fundamental principles: The spectrophotometer analytical method is based on the different materials’ molecular structure’s selective absorption of electromagnetic radiation..
  • The available electromagnetic radiation’s spectral region is normally between 330nm-800nm..
  • Main Technical standard: Wavelength Range: 340nm~1000nm.
  • Stray light: ≤0.5%(T)(at 360nm ,with NaNO2).
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MOTU M4 4x4 USB-C Audio Interface

  • ...t loopback channels to your host computer, so you can easily route computer output back to the computer, where you can mix it with live mics and/or guitar inputs from the M4 in your host software for live streaming or podcasting. Streaming and podcasting has never been easier and better-sounding.
  • A Tradition of Engineering Excellence: Decades of award-winning product engineering for hit songs, mega tours, primetime shows and blockbuster movies goes into every MOTU audio interface.
  • Workstation Software, Virtual Instruments and Loops: Connect the M2 to your Mac or PC and start laying down tracks with the included Performer Lite or Live Lite production software, plus hundreds of loops, one-shots and sounds from industry leaders Big Fish Audio, Lucidsamples and Loopmasters.
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Headphone Splitter 3.5 Audio Stereo Cable Dual Male Y Splitter Adapter Extension Aux Cable Headphones Splitter Headset Tablet Splitter Compatible with PC Laptop Phone Speaker（3.93ft-F-2M,Black）

  • 【Gold-Plated Interface】 - Gold-plated with antioxidant effect of RCA audio cable,corrosion resistance,excellent conductivity to make the signal transmission more stable,long unplugging life.
  • 【Selected High-Quality Wire Core】 - This RCA cable Using oxygen-free copper conductor,low transmission loss,multi-layer shielding network effective anti-interference,high-fidelity transmission of pure signal source,strong bass,natural and bright,quite listening durable.
  • 【Multi-Layer Shielding Protection】 - Using high-fidelity shielding design,shielding anti-interference,band amplitude,presenting high-fidelity music effect,so you can feel better sound quality with 3.5mm audio cable,experience a better life.
  • 【AV Engineering Type Protection】 -With wear-resistant compilation of carbon fiber protection,compression,wear-resistant and pull-resistant,whether outdoor performance,engineering pre-buried,home audio & Hi-Fi are capable of.
  • 【Selected Materials & Craftsmanship】 - Through 20 years of continuous exploration of the process to provide high-quality audio transmission signal,high-fidelity restoration of the musician's emotions by the aux stereo cable.
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Permacharts Traditional Chinese Medicine Guide - Quick Reference Guide

  • 4-page 8.5" x 11" laminated Traditional Chinese Medicine (TCM) Quick reference guide.
  • This Guide provides a systematic overview of the key basic principles of Traditional Chinese Medicine (TCM) and its related disciplines, including Qi.
  • TCM diagnosis and treatment. Herbal medicine principles are also clearly explained.
  • The basic principles of Traditional Chinese Medicine. Ying and yang. Pathogens. Diagnosis and treatments. The principles of herbal medicine. Anatomical diagrams..
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Kid Binoculars Best Gifts for 3-12 Years Boys Girls High-Resolution Optics Shockproof Mini Compact Binocuolar Toys Folding Small Telescope for Bird Watching Camping Outdoor Play

  • 65+ stem activities for hours of unllimited fun : Butterfly EduFields educational science kits immerse children into learning and playing environments using construction and engineering. These electric motor kit helps to develope the electronics, mechanical skills with imagination and creativity.
  • Reduces screen time : With our STEM science kit engage your kids to get the endless fun and encourgae your child to learn through play. An alternative option to reduce your kids screen time and gives wings to their imagination while sharpening skills. Educate and interact with your kids through our motor model kit in a fun and loving way..
  • Show your creativity in 65+ ways: These kids DIY kits come with 60 unique and 40 reusable pieces that can transform into a number of fun prototypes. You can create a Solar Car, Walking Robot, Holograms, Water alarm system, monster trucks and many more with the help of instruction video..
  • Trustable quality material : Butterfly Edufields kids engineering building kits are made from premium quality material that is safe and entirely child favorable.The surface of the STEM building kids science kit is very smooth and will not cut the child's hand..
  • An Ideal gift that your kids love : It’s a perfect gift idea for every special oc....
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K'NEX Education - STEM Explorations: Swing Ride Building Set

  • ...an also build two other amusement park ride models with this toy set — a boom ride and a Ferris wheel. Let middle-school students learn as they have fun with this K’NEX Education building set..
  • EXPERIMENT GUIDE – The three included experiments contain complete details on conducting the hands-on, inquiry-based engineering projects based around the models and include information about the different parts and pieces. Parents can assist their children in the beginning until kids get the hang of it..
  • PROMOTES TEAMWORK – Specially designed for children ages 8 and up, this engineering set is more fun when constructed with friends. Students in grades 5‒9 can create the models alone or with two other classmates. Through teamwork, students will learn how mass affects speed, how to gear up and gear down, and much more! The set promotes camaraderie and the development of social skills, too..
  • STEAMagination : It’s the connection of STEAM (science, technology, engineering, arts & math) with a child’s natural curiosity and creativity and it powers the fun of each and every K’NEX building set. Building with K’NEX puts children on a path towards a fundamental understanding of STEAM/STEM subjects..
  • LESSON PLANS AND EXPERIMENTS: All K’NEX Educa....
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The Subwoofer Level Matching Test

  • True 7.1 Surround Sound: 10 discreet drivers, 5 in each ear cup, deliver pinpoint positional accuracy.
  • Audio Control Unit for Total Sound Customization: Control the volume of each audio channel, or even toggle between true 7.1 surround and stereo audio.
  • Premium Comfort and Durability for Extended Play: Years of ergonomic engineering and pro-gamer validation has led to the Razer Tiamat 7.1 v2's unique headband construction that ensures balanced weight distribution and reduced clamping force.
  • Digital Microphone: Designed for natual sound reproduction and unidirectional pickup can be pulled down or flipped away as needed.
  • System Requirements and Compatibility: PC with built-in 3.5 mm audio jacks & 1 USB port (for power) PC or motherboard with analog surround sound ports (3.5 mm audio jacks x 5 or more) for true 7.1 surround sound.
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Meccano Erector, Ferrari FXX-K, S.T.E.A.M. Model Building Kit, for Ages 10 and Up

  • BUILDING KIT FOR AUTHENTIC FERRARI MODEL CAR: With the Erector by Meccano Ferrari FXX-K model building kit, young builders can create their own race car! This model kit includes everything needed for construction, plus stick-on decals for the finishing touches..
  • CONSTRUCT WITH REAL TOOLS: Build a sleek replica of Ferrari’s high-performance race car! This building kit gives young builders real tools to piece together durable nuts, bolts and wheels to create their very own Ferrari FXX-K model!.
  • S.T.E.A.M. TOY: As kids assemble with this kit, they’ll apply principles from science, technology, engineering, arts and math. Kids will strengthen their hand-eye coordination, problem-solving and fine motor skills, while using their imagination!.
  • The Erector by Meccano Ferrari FXX-K S.T.E.A.M. building kit makes a great gift for ages 10 and up. Find additional build instructions at Meccano.com. With Meccano, building is only the beginning!.
  • Includes: 286 Parts, 2 Real Tools, 1 Decal Sheet, 1 Instruction Sheet for 1 Model.
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USB Condenser Microphones for PC [Headphone Monitor Output], Recording Micophone and Shock Mount for Livestream, Gaming, YouTube, Podcast, Compatible with Computer/MAC/Laptop, by IDoon

  • Professional Audio Chip: Professional high-end audio chip is used, and the product appearance and structure are optimized according to acoustic principles..
  • Wide Range of Use: Perfect for podcasting, Skype calls, gaming, livestream, Asmr, YouTube or music..
  • Built-in Headphone Output: There is a 3.5mm monitoring jack on the MIC, Offering latency-free audio monitoring and getting the feedback on recording quality..
  • Outperforms Similar Products: Our products are made of stronger zinc alloy body, Equipped with: one-touch mute button, 3.5mm headphone output, Volume adjustment, Double-layer pop filter, and shock mount..
  • Easy to Install: Usb plug-and-play, Mac and PC compatible..
  • Perfect Sound Quality: High-quality large- diaphragm, Cardiod Pickup Pattern, Supports sample rates up to 24-bit/96kHz..
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