P.S. to my previous post: What I suspect is likely to make a more significant difference in sonics when the LTA amps are "bridged" than the resulting power increase, with the difference most likely being for the better, is the fact that the amp’s output impedance would be cut in half as a result of the channels being paralleled. And that potential benefit can be expected to be greater in degree in the case of the 4 ohm version of the DI than in the case of the 8 ohm version. Higher speaker impedance makes amplifier output impedance less critical, everything else being equal.
Best regards,
-- Al
Best regards,
-- Al

