The DM-RTA Pro Kit includes everything you need for a complete mobile audio measurement solution. Nestled snuggly in the fetching blue hard case, you will find a DM-RTA, AC power supply, all of the required interconnects, and custom test leads for line-level and speaker-level measurements.The RTA (real-time analyzer) takes electrical and acoustical measurements. This will let you know how much equalization is needed to smooth out the frequency response of a vehicle. The sound pressure level (SPL) is used to show how loud the audio system can perform. This is something every customer would love to know and a way to test the before and after performance of a system. Testing speaker polarity is very important. All the tuning and setup means nothing if all the speakers aren't in phase. The oscilloscope measurement will give you a graphical representation of audio or electrical signals so that you can determine if these signals are distorted (clipped) or clean and their amplitude. This is extremely valuable when setting input and output gains on audio products. Included in Kit: DM-RTA Real Time Analyzer 110V AC power supply/charging adapter USB A to B cable USB A to A cable CM-30 measurement microphone XLR microphone cable Speaker input to spring-loaded test leads cable RCA input to spring-loaded test leads cable AudioControl tuning pick (looks a lot like a guitar pick) Blue hard case with laser-cut foam SPECIFICATIONSInputs1 x Balanced (Input Impedance 3.24kΩ)1 x Unbalanced (Input Impedance 3.24kΩ)1 x Microphone (Input Impedance 10kΩ)1 x Speaker Level (Input Impedance 16.24kΩ)Max Low-Level Input Voltage: 8 VrmsMax High-Level Input Voltage: 40 VrmsOutputs1 x Balanced (Output Impedance: 51Ω)1 x Unbalanced (Output Impedance: 51Ω)1 x Coax Digital (Output Impedance: 75Ω)1 x Toslink1 x USBMax Output Voltage from Signal Generator: 5 Vrms / 7 V PeakGeneralPower Supply:Battery Life: ~5 Hoursweights & dimensionsDimensions: 8”W x 4.8”D x 2.4”HWeight: 2.6lbs (1.2kg) Hard Case Weight & DimensionsDimensions: 16.5”W x 16”D x 7”HWeight (with the included product): 13.0 lbs. (5.9 kg)What's in the box: DM-RTA, USB Cables, Power Supply, Microphone & Cable, Tuning Pick, Speaker & Line-Level Test Leads, Hard Case, Manual, Warranty DM-RTA APP: for PC & MAC Calibration FileThis kit includes the brand-new CM30 precision measurement microphone. To ensure accurate measurements, please use the C550H calibration file. This will provide the most reliable results for your audio projects.