Passive mode is by far the worst for an active gain stage ,you are using the power
supplies and soundstage imaging and dynamics are better.
The $1k Schiit Freya + is very good for the money,
but not in the league of a Aesthetix , or Linear Tube Audio preamp a truly good
preamp is much better built in every. Respect and is a fully active gain stage preamp. If you have to worry about the expense of a quad of tubes then just just save for a good solid state preamp and be done with it .Myselfonlyuse matched vintageNOS tubes far better then todays Russian,and china tubes, and last much longer ,if bought from a reputable dealer.like Brent Jesse audio,who offers a 2 year
warranty for little money, or vintage tube services.
