Q: Have any of you SWR owners played your bass directly through your HiFi system? I'm very curious to see if the SWR (flat eq) is very close to the HiFi (flat eq). If this is the case, the SWR is probably reproducing a fairly accurate rendition of the bass' actual tone. To be fully accurate, the HiFi speakers would have to be used for both the bass amp and HiFi listening tests. Another thread mentions the big, fat, greasy Fender tone obtainable from a Kern preamp. Ditto for the Alembic F-1X, and others with passive tone controls. These passive tone circuits were designed back in the day when speakers had lousy low and high frequency response, and the tone circuits apparently compensate for this. Note the built-in Smiley Face EQ. LINK: Fender Tone Circuit Graphic I find that my subs plus the Alembic F-1X at flat (0-10-0) has all the bottom I ever need, but not enough mids. I cannot increase the mids, nor reduce the bottom using the Alembic controls, so I have to use an external EQ. This would be a problem for all passive tone controls, since all passives are Cut Only types. The SWR controls are active, and both Cut and Boost. The bottom line is I'm hunting for a HiFi preamp in flat EQ that reproduces exactly what the bass sends to it.