PhaseChecker vs DTS Gas Guru

The PhaseCheck app will run a test signal through your sound system to ensure your speakers are in-phase and wired with the correct polarity. It can be run either manually or automatically.  Manual mode allows you to run the test signal and flip the phase so you can listen yourself to ensure your sound system is setup correctly.  Automatic mode will run a series of test signals through your sound system and use the microphone on the device to analyse the results. New in version 2.0 is a waveform view mode for advanced use. It allows you to play an asymmetrical waveform (ramp waveform), record the sound from each speaker close up and capture the waveforms to then compare them. Phase is a difficult concept so full help is available in the app to ensure you get the best results. You should check the phase of your sound system whenever the wiring has been changed to ensure everything is the correct polarity. When a sound systems speakers are out of phase the sound quality is affected massively. Bass is reduced significantly and stereo imaging gives the illusion of the sounds pulling outside of the room. To run the check connect your iOS device to your sound system so it can play audio. If possible place the iOS device evenly between the speakers. Phase cancellation will not occur close to the speakers so ensure the device is not too close. Ensure the volume is at a comfortable listening level and if possible ensure there is no background noise to interfere with the scan.

The DTS Gas Guru is a professional technical diving tool built for CCR and open circuit divers. Designed for real-world diving, Gas Guru delivers fast and accurate calculations for Best Mix, MOD, END, EAD, gas density, and gas mixing with costing — all in one clean, reliable interface. Whether you're planning deep trimix dives, analysing gas mixes, or checking safe operating limits, Gas Guru helps you make confident decisions underwater, built on the same dive-physics engine that powers DTS Dive To Survive. WHAT'S IN THE TOOLKIT • Best Mix — ideal O2/He blend for your target depth, PO2, and END (OC + CCR diluent) • Gas Check — verify a fill against your PO2 limit or CCR setpoint, with MOD, END and density • Mixer — Nitrox and Trimix blending, top-up planning, "what if" scenarios, decant calculations • Density — gas density at depth against caution and critical thresholds, with adjustable water temp factored in • Gas Cost Calculator • SCR Loop Calculations SAVE AND SYNC YOUR MIXES Create a free account to sync your saved gas mixes across all your devices. Your data is end-to-end encrypted before it leaves your device. Gas Guru works fully offline; an account is only needed for cloud sync. CLEAN, FOCUSED, NO ADS No clutter, no ads, no distractions — just the numbers you need before you get in the water. DESIGNED FOR • Technical divers • CCR divers • Trimix divers • Dive professionals and instructors Built from real-world diving experience — not just theory — Gas Guru provides practical tools you can rely on when it matters most. Plan it. Trust it. Dive it.