Yeah, Here is what I was told by Emotiva:
Hi, Keith,
Well, for starters, the XPA-5 is going to be priced at $699, which is $200 more than the LPA-1, so it's not the cheapest amp we'll have. Secondly, the MPS-1 and IPS-1 are class H amps, with separate power supplies for each amp, which is very expensive to produce.
here's what Gene at Audioholics said about the same question on a thread on their forum:
Very simple, they are using a much LARGER common power supply instead of independent supplies for each channel. I usually prefer this method since it allows for more headroom between channels when they demand that extra power. The only real disadvantage could be a penalty in stereo separation but if designed right it may only be a measurable, not audible difference.
As far as an XPA-7, I am unaware of any plans for that at this time.
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ha...we've had a lot of questions about that amp...mostly people expressing disbelief. a lot of the price factor for us is that we own our own factory, and sell direct from it...no middle man. most companies pay a company like us to develop a product for them, and then have to pass that cost to the customer.
if you want to preorder, just send me your full name, address and phone, and i'll put you on the waiting list. we won't take credit card numbers yet, since we don't charge unless we actually ship a product.
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well, it's the same chassis as the LPA-1, but a little bit heavier, so I'm gonna estimate about $50 to ship. We may end up doing something special on preorders with shipping, not sure yet.
d.g.
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Keith, the BPA-1s are dropping to a new price of $149 each next month - just so you know...
and yes, the XPA is A/B, with a 12 volt trigger.
d.g.