Multiple varios

or.....
I seldom look at a vario but rely on its audio tuned and honed to my brain. I've become so wired to the nuance of the Borgelt pitch, that when the speaker quit during a race, I turned on my 'back-up' CAI 302 audio only to discover it had a totally different pitch. WTF shot thru my brain and took more than a few thermals to get into some form of race mode. I had Tim jet me a new Borgelt overnight just for the audio.
Lucky (very) for me, progression into the CN xc as my back-up data logger, navigation, vario happens to have an audio pitch that matches my Borgelt.
The Borgelt also has, as others varios do, a AA battery back-up to come home on should an electrical issue arise.
After 14 years, 49 races, 3000+ hours of thermaling listening to the same audio, I know within 50'am the strength of the thermal, or sink.
The audio is critical to maintaining the highest level of safety towards aircraft separation and collision avoidance as well as information intake by......
keeping the eyes outside. Gliders, birds, gliders, clouds, gliders.....pig farm, walmart (got low), gliders, clouds.
I want two audios in my cockpit.
14 years? 3000 hours? gheez....boy do I suck at racing.

R