Advice on pre-amps needed

Kurt, fortunately my Lyra cartridge is already fully broken in. But as I currently have no preamp, my turntable (a beautiful Transrotor) just shines in beautiful chrome from my rack. As you use Koetsu I assume that you use an Audiocraft AC 4400 tonearm?

Best regards, Frank

Have you looked at the Tron Syren (www.tron-electric.com)? This is a cost no object tube preamp with user adjustable phono stage. It is essentially a bespoke build to order preamp from one of hi-fi's unsung tube gurus, Graham Tricker in the UK. It has had rave reviews in 6 moons. I have the Tron's predecessor, the Tron Meteor, which is sounds stunning. This is used predominantly as a phono preamp with my platine Verdier/Schroeder Model 2/Allaerts MC1B. The US distributor is Highwater Sound in NJ.

If you email Graham (sales@gtaudio.com), he can build you one to your spec ie for your cartridge, with optional extras if you wish.

Topox.. no, I´haven´t so far as this will be beyond my financial boundaries (I suppose).

Has anybody experienced the new Jeff Rowland Concerto pre with phono option?

@Kurt_tank
If you are experiencing tube rush, use a tube with a lower output instead. A tube that is matched for your preamp or amp should not have that symptom. 
 Some tubes are quieter than others with a given output. 
Bent