Pre-amps: input and output impedance

[nat8808]

It's solid state (Emmlabs Switchman Mk 1) with balanced output into the 220K ohm input valve amps. Should be ok shouldn't it, no frequency roll offs or such?

[i_should_coco]

It will be fine.

[nat8808]

YEAH !!!! Just need to make some cables then with the annoying double RCA thing.

Thanks for the responses.

[Dik Dolan]

The WAD Pre3 for example has such a low ouptut impedance that they say you can use it to drive an 8 ohm speaker and you can, I've tried it

Valvebloke

I keep intending to try mine driving a pair of 65ohm headphones... have you tried that at all?