I don't have a Combustion with the FD3s, so I can't compare them (although I have had one on order since the beginning of the year - only 6 months to go!). I could record something but it will take me a few days.Can you describe the tone of the NBSingles, please ? How do they compare to the current Combustion FD3's ?
Been thinking about rolling Pups. Others may well be interested, too.
The sound is like a Jazz Bass to the tenth degree, if that helps at all. Articulate, loud, a bit trebly and aggressive, but not in a bad way. I prefer them in passive mode.