Have flown a Tasman for 2 years. Very good unit. Sturdy, simple,
works well, small, self-contained package with independent power
source, if desired, audio is plenty loud and there is no need for
external speaker in my installation (AS-W20). Audio sound is not my
favorite but is tolerable. Too bad it does not have electronic TE
compensation and/or the ability to electronically adjust the
compensation but the signal is both accurate and reliable.

I flew 2 flights over 750 km last year using it as my only vario after
my Cambridge 302 lost its little mind (again). Tasman is very
responsive to questions and needs and is very knowledgeable about the
product (unlike some brands...). They also have a sense of humor. I
highly recommend it!