Ray Samuels B52 headphone amp as preamp?

The Dact is an expensive unit on its own (right around $200 USD) so I do not think it is used to save cost. I actually have a Dact in a passive linestage and have been able to use 20 of its 24 steps. In the RSA Stealth, the gain with the tube stage is just too high to make it useful as a preamp. I tend to think the Dact was just designed for use as a passive device or in devices with very little gain.

Thanks Jrinkerptdnet. That makes sense to me that it was meant for a passive preamp. Therefore it just seems puzzling why it is used so often in active preamps/headphone amps.

No clue ... unless the headphone amp was designed for use with cans that are hard to drive and need a lot of gain, the Dact does seem like a poor choice.

Thanks again Jrinkerptdnet.