I use ARC sp16 pre with BC ref1000m amps and also have a BC C5i integrated.
Both sound excellent but there are notable differences.
The main thing is if you are running a higher output impedance tube pre-amp, you need a BC amp model that has at least 40kohm input impedance. Most newer BC amp models include 100kohm unbalanced and 200kohm balanced input impedance, and will work well with most any pre-amp. Older models prior to the m series designation tend to have lower input impedances as I recall and may not work as well with many tube pre-amps.
Other than that you are good to go with most any combo. Each will sound different still and you can choose what sounds best, but at least you know you have two components that mate together optimally from a technical perspective.
Both sound excellent but there are notable differences.
The main thing is if you are running a higher output impedance tube pre-amp, you need a BC amp model that has at least 40kohm input impedance. Most newer BC amp models include 100kohm unbalanced and 200kohm balanced input impedance, and will work well with most any pre-amp. Older models prior to the m series designation tend to have lower input impedances as I recall and may not work as well with many tube pre-amps.
Other than that you are good to go with most any combo. Each will sound different still and you can choose what sounds best, but at least you know you have two components that mate together optimally from a technical perspective.