https://www.firstwatt.com/prod.html
one can see from the chart that even among nelson's gaggle of fw amps, the sit3 is particularly low gain... so yes it would benefit from a higher gain preamp, line stage or direct source
one can see from the chart that even among nelson's gaggle of fw amps, the sit3 is particularly low gain... so yes it would benefit from a higher gain preamp, line stage or direct source