Preamps suitable for CJ ACT2 Series 2 preamp.

Just realized a major booboo in my title!
Not sure if I can change it to give me back some credibility!!

Nice equipment...if your YGs are similar to the larger Anats which i have heard, i would suggest very powerful tubes? CJ tubes to start with? If the big boys are too much, you can get the older big boys and have CJ replace with teflon capacitors...'Downunder' here on AGon has done this to great success. Or you could monoblock a pair of older MV60SEs.

Yes, my CJ dealer suggested I try some tube monoblock power amps from CJ. But not certain if they would have enough grunt to power the YGs. One would think my CJ Premier 350SA would have more than enough ample power but apparently not. Other power amps on my list could be from the Boulder stable or YBA. Soulution and Vitus just a bit too rich for my blood. Although Boulder gear in Australia retails for incredible amounts of money as well...

Whats the impedance of the YGs?...not the stated impedance...but the actual impedance across the spectrum as reported in any reviews? For example the SF STrad was 4ohms nominal...but actually 2.7 through 2/3rd of the spectrum below 700hz or something.

CJ does not quite double down thru the impedance range...600Watts at 4ohms as i recall...but that is still reasonably powerful.

in any event, you may find the higher powered tubes have very high current and are able to really drive the YGs. In the end, SS Class A (Boulder, Vitus, Gryphon) are probably some of the most powerful amps that come to my mind. I am told Vitus is closer to Gryphon than Boulder in character. good luck and pls keep us posted if you hear the CJ tubes.

Vmhf,
Increasing the volume of CJ Act2.2 to volume level 50 , is that too high when the max volume is 99 ?What is your room size ? I am using a CJ Act 2.2 with CJ 350 and I used to listen to it at around 48-50 volume level which I thought is normal. My room size 14.5 x 24.5 x 10.5 ft