emergingsoul OP
This is getting sooo damn complex for my tiny mind. Very very and maybe toooo techie
To put it simply, your Chord Dac using the remote variable volume output from it’s line outputs, gives over 5volts!!!! at full volume. This is more than enough for any amps on the market.
Use it direct into your amp and forget about buying a preamp, save the money and get sound that more transparent/dynamic/uncoloured in the process.
Cheers George