I also have C4s driven by Halo JC1s in a large room and current/power is never lacking.
I believe rhyno used to have the Halos also, as well as knowing the late great Bob Crump personally. Maybe he could comment on how the Halos contrast with the XA.5s.
I've listened to XA and XA.5s extensively but not on my C4s. My pre is the Pass XP20 and the XA.5s are a tempting upgrade but how much class A power is enough for the C4s I'm not sure.
I believe rhyno used to have the Halos also, as well as knowing the late great Bob Crump personally. Maybe he could comment on how the Halos contrast with the XA.5s.
I've listened to XA and XA.5s extensively but not on my C4s. My pre is the Pass XP20 and the XA.5s are a tempting upgrade but how much class A power is enough for the C4s I'm not sure.