i know that the old peavey max featured both tube and solid state in a single rack space rack mount pre amp. this was my favorite pre ever to date for everything i have tried so far. i also had an ampeg BSP which also featured both tube and solid state in one single rack space package. i really dug both of these pres. WHAT ELSE is available currently that features: -single rack space -tube w/ solid state bass pre amp? any suggestions???