Soulution amp and tubed preamp

Psag,
Al gave you very good information. Here's an exception to the rule. Australian member Pap said he used a Coincident Statement Linestage quite successfully with a Soulution amplifier. The Coincident has an output impedance of 500 ohms. So an unexpected outcome given the numbers. Al's point is certainly the general rule of thumb is these situations. I have no idea why the Coincident is an odd exception.
Charles,

Hello Al,
Well that makes plenty of sense! The transformer coupled Coincident would
avoid the potential wide impedance fluctuations of a capacitor coupled
preamplifier. Pap's experience isn't the odd exception after all and his
success with the Soulution amplifier is now logically understood.
Thanks,
Charles,