Recommendations for power Infinity Kappa 9's pease

[efertheredfish]

Hello Raj,


They are good amps for the woofers, but they can't handle the transparency in the midrange and tweeter region.
The Thresholds are almost perfect and becouse the STASIS circuit makes them sound like a tube amp. If you do not want to have retube and it is a perfect match for Infinity hence it makes appear the ribbon to become crystallic clear which on the other hand doesn't work with the Krells.
John Gordon Holdt and Arnie Nudell seleted therefore the Thresholds as an fabolous soloution to the Infinitys if you do not like to have a tube amp. If you use a tube pre your as good as with the M300's. There is not much sound difference in my setup no matter what i use becouse i pair it correctly. ( tube pre)
The STASIS Series were tested on the IRS, Gamma, Beta, RS-1 and they sounded like a dream!
The M300's have many disadvantages they are not working stable at 230V here in Europe and if the tests points aren't set correctly they are a disaster. They are expensive in repair. I retube once a year and the costs aren't cheap. They aren't my favourite stuff. Conrad Johnson is better, but you can also use a tube pre and the Threshold for the Kappa 9's and they sang as good in the lower frequency region even better than the M300's.
Match the components right. Thats the glue.
When Arnie selected Threshold as an option you can't go wrong. You just do not like the sound of this amp, but its pairs nearly perfect!
What you want with Bryston. They are far too low powered for all the Infinitys and noone would recommend them.
The Adcoms cannot drive this speaker. They have a good circuit, but they are not a high current design. My suggestion for 500$ on Craigslist, the HCA2200 works nearly perfect and it was tested during that time with the Kappa 9's. It is not a new amp where nobody knows if it works or not. It does pretty well. It isn't the most musical option, but I understand this guy.
We here have an Inflation about 4%. Its pretty silly to drive to car wash and pay 12$ when you select the cheapest washing programm. SILLY???
The Pass nearly have the same circuit and I agree that they sound well on the Kappas.
Also your infos that a 200 Watt tube amp sounds fine and a higher powered one better.
Man, the output transformer has to be designed with two ohm windings switched with another one parallel or one ohm windings at the output tap to match the low impedance with the Kappa 9's.
There are 50 watt tube amp outside that sound better than your suggestions here in the forum!

We all know there are a lot possibilities, but we should come back to the origin of this post to recommend very low priced affordable electronics to drive the K9's. Anything else is good to hear, but wont help this guy much.

My suggestion is a 300$ tube pre from Prima Luna and the HCA2200 to drive the whole speaker.

That should work and shound quite fine!
Cheers
Stefan

[efertheredfish]

Some other working amps come in my mind, but i do not know how they are dealt in the US.

Nakamichi PA7E
FORTE 1A ( a pair to drive the kappa 9's)
Vincent D150