What secondary amplifiers do you use?

[sfdude]

Hi all! I'm curious for those who have used the PRE OUT option on their Devialets, what external amps are you using in combination with your Dev?

And are you using the Dev as a Preamp/Streamer/DAC only or are you bi-amping with the external amp? And do you feel the external amp is needed above and beyond what the Dev's amplifier can already do?

Thanks!