Help KEF 104/2 what amp do I need to drive them?


I recently picked up a pair of KEF 104/2's at a local sale. I have had these hooked up to a new yamaha receiver (around 100 watts)and they sound pretty decent. However, from the little information I have been able to find on these speakers it seems that they are rather picky and like a strong amp. I am trying to find an amp that will drive these to their full potential. Does anyone have any recomendations or past experience?

I am looking to spend no more than $500 on the amp right now and I am hoping to buy used. I have seen several 125 watt B&K amps online. I was also thinking about a used NAD amp. Can someone please help me out?

Thanks!

Madison
madmanbmw
If you can stretch your budget just a bit, I'd imagine a used McCormack would work very nicely indeed.
I have a friend with 104/2's who uses an Adcom GFA-555 with them. He loves the combination but is admittedly not an audiophile.
I also used to run my 104/2's with that Adcom back in the early 90's! By the time I reached my all-tube all-the-time system the Kef's had been long replaced by my Spendor S100's! I remember how highly-acclaimed that Adcom was. At the time I was just a rookie at all this, to my ears the amp sounded fine, I wonder how it (GFA-555) would rate today?

I have a pair of Kef 105-2 and drive them with a Chord 4000 spm sounds real nice.
madman,

Just curious if you ever settled with an amp for those KEF? I have a pair myself and was wondering which amp you decided on and how they sound?