Drew W:
Classic Spectral gear features an ultra-wide bandwidth design (from DC to 200 Mhz.) that must be used in all Spectral systems featuring networked MIT cabling that filters out certain types of RF and RFI to prevent the componentry from going into oscillation. Only recently have they started to offer a few components (e.g., a "universal" amplifier) that can be used with other components and non-MIT cabling.