Your condescending, deflective garbage is not worthy of a reply. 21 straight years of continuous production, with continued refinements to the product line, and absolutely no burned out amplifiers the designer is aware of.
But why let the facts get in the way of your argumentative, objective nonsense.
Why indeed? Let's begin with this gem: "and absolutely no burned out amplifiers the designer is aware of."
That statement is complete bollocks. However, I will state, for the record:
Redgum amplifiers are, IME, not particularly unreliable. In fact, their simplicity makes them reasonably easy to service. I've dealt with Ian Robinson many times and he is a pleasure to do business with. He supplies complete output modules at a price which is so reasonable that component level service is barely worthwhile. But no burned out amplifiers? Not a chance. I've serviced quite a few over the years. OTOH, Redgum amps are pretty reliable on the whole (though I stress that I've only worked on fan cooled models). I do not wish to suggest that they are unreliable, because they are not. There are vast numbers of really badly designed products which appear on my bench with monotonous regularity. Redgum amps do not factor in this group.
In fact, thinking on what I've written, I can confidently state that Ian Robinson would never have made such a claim.
How're the measurements on that IHF pre-conditioning going?