MikeC

More encouraging news SK1Bum! Thanks. Another success story, and with RSIIIA’s, as close to the IIIB’s as can be. Outstanding! Did you have the standard C1 and convert to the BillD, or purchase it already modded? If so, how quickly were you able to characterise the changes?

When I spoke to Rolland at the time,he just mentioned further sonic improvements over the basic refresh that included quieter opamps and superior volume control amongst other things. When I asked if this is like the BillD mod, I believe he said this was their proprietary upgrade and is very noticeably better than the refresh, but would not comment further, nor mention the BillD mod at all. I have no idea if he gives any further information these days.

I’m intrigued by the many positive experiences for the C1 BillD. I will pursue it with Greg. I have Infinity RS-IIIb speakers with rebuilt crossovers and refoamed woofers. Hopefully resolving enough to hear the difference!

Thanks much! This is very helpful. I will contact them for more specifics.

Thanks! 5 or 6 years ago, Roland said their mod was just shy of $1 k. I thought that sounded pretty steep, so just went with the chassis refresh, which I’ve been quite happy with. But now, I wonder if I made a mistake. Would you know if the BillD mod carries a similar price, say at nelion audio if they still do the work?

Hello all! New member here. I have owned a C1 since 1985, had a full chassis refresh by Roland at HiTech Audio around 11 years ago. They do not offer the BillD mod by that name, or at least didn’t at the time, but did offer a version that was said to be similar or at least as good. Does anyone have any knowledge of a comparison of these two? I am using it with an Aragon 4004 MkII, which replaced my Carver M1.5t about 6 years ago.