Audio Research Ref 5 and Krell amps


Hello,

Just wondering if ARC Ref 5 preamp will mate well with Krell FPB 450 MCX monoblocks. My speakers are Revel Salon 2.
sfstereo
Doogie,

Obviously I wouldn't! I was just curious what the price difference was and glad I sold my Ref 5 before the SE upgrade came out! I doubt I will ever need another preamp with the 40th AE, it truly SMOKES the Ref 5 and I loved the Ref 5 when I got it!

I A-B'd them and gave the warm up advantage to the Ref 5 (1,200 hours on it and 4 hours playing time to warm up) v the 40th AE (550 hours and 30 minutes warm up) Their was no comparison, the 40th had EVERYTHING better! Micro and macro dynamics as well as a quieter background and better bass control. The shear speed of the 40th AE over the Ref 5 was unbelievable.
I have access to Ref 40 and just picked up Ref5SE...

When listening to 40 v 5(non SE). I would say the 5 got about 80-85% of the 40...but was weaker primarily in lower register definition and transparency...the 40 just has very little signature. I expect the SE will change this and get closer to 95-98% of 40 for half the cost.

Need my SE to break in but will report in a few months...I don't expect the SE to top 40 but it will be a hifi bargain

FWIW...I think Ref 150 is hifi amp bargain...I have both 150 and 250s...and while 250 is better primarily in low end articulation and at higher volumes...there is a range in which the 150 is almost there for a lot less...and that's a lot of extra $$$$ for music
Hi Tylercoupe. I have a REF3 LE and REF Phono 2 which had been "modded" by Steve Huntley (GNSC) when i got them new from the Dealer. Looking at some of the pictures from the link above shows stunning similarities between my modded units and those in the SE models. The main differences, at first glance, are those teflon coupling caps that i do not have in my 2 units although several Caddock resistors have been installed in key signal path and additional Black Gate caps in the power supply mounted on the side rail the same way ARC has done it.

I'm intrigued about your assessment of the REF 150 and 250's though. I currently have a pair of Classic 120's (circa 1990) also modded by GNSC. As good as they are, I am considering replacing those with the 150 or a pair of 250's.
Truthfully, i would have to take a second mortgage on my house to afford the 250's at $26K but could however manage the 150 or a used pair of 210's with KT120's.
My speakers are Verity Audio Parsifal Ovation.

Happy listening and Happy New Year !!
Sly.