Dear Mr. Harley,
I've been thinking about the fact that Spectral amps REQUIRE the use of MIT cables with their network box, and it suddenly dawned on me that the (passive) electronics in the MIT box could have been made part of the amp. This could have made the amp independent of specific cables, and the electronics could have been improved, possibly by using active components and/or changing the amp itself, to minimize phase shifts, delays and whatever other distortions introduced by an additional passive network in the critical path.
Then I thought of possible reasons why NOT to do it.
The amps currently have a feature that seems VERY impressive -- frequency response up to 150 KHz within 0.1 dB and to 1 MHz within 1 dB. However, this impressive feature is plainly unacceptable to speakers, so that the network is REQUIRED. However, how can we retain this special, unique, impressive, marketing-differentiator feature and still have the network? Simple: Separate the network from the amp, but REQUIRE that the network be used! Brilliant, isn't it? Especially when people have to buy our own cables and will be willing to pay extra for our network!
This way the amp can be as purist as can be, have the best measurement and so on, only that what you measure and what you hear may not be directly related…!!!
Maybe that's why Spectral avoid specifying anything about the output of the amps except power, as any output impedance and damping factor specs might be an obvious lie.
All this does NOT imply whether the sound of Spectral amps is great or not. I know you consider the DMA-360 a class of its own, and the above does NOT refute that.
Can you help me untangle these thoughts, in case I got anything wrong?
Thanks and best regards,