I am seriously considering the purchase of a Zen Torii MK IV and have a couple questions. First, is the beeswax type 2 upgrade worth the money? Secondly, I saw that Steve had said you should only use a world class preamplifier with the Torii MK.IV. Does this mean it is meant to be used without a preamp, and can anyone give me an idea how much it benefits from a really good preamp? Lastly, if its intended to be used, by itself, as an integrated amp, is the stepped attenuator important to add?

Thanks for any help with this. I just need to make sure I have things right. This almost definitely will be the last amplifier I will ever buy.