Concert Fidelity audition program


I recently auditioned a Concert Fidelity CF-080 linestage as part of an in home audition program from their website. The linestage was mated to an Essence Electro Acoustics Emerald 1B amp and this match proved to be revelatory in improving my musical enjoyment. The CF-080 linestage is of minimalist design and really lets the music through with incredible transparency, lightening fast transients, and the most complete finishing of notes with tonal purity and accuracy I've ever heard.(The CF-080 replaced an $18K tube linestage in my system).I urge you to visit their website and take part in this audition program. If you are a user of Concert Fidelity/Silicon Arts Design products I would be interested in your tube choices with the linestage and your speaker choices when using the amps?
powder
Malawar: I have tried many 12au7's (Amperex-Holland, Brimar, Tele-smooth-plate, Mullard GB 1959 with goal-post getters, Raytheon-metal plate, Sylvania-metal and graphite plate, Raytheon 7730 and 5963's amongst others) Best so far are a set of Sylvania (branded Hewlett Packard 5963's, pulled from an oscilloscope). Great body, weight and warmth with all the detail that the CF-80 linestage delivers! Second best are a set of Raytheon metal-plate 12au7's. These tubes just dialed in the CF 80 and the 040 DAC for me. As far as the rectifier tube-I am not a fan of the RFT. An early 70's RCA stop sign logo and a late 60's Raytheon 6ca4 have proven to be the best in my units-however, their are many more to try. Any feedback from other users of these electronics?
Powder: I am using the ZL120 with Proac D100 speakers and it works well together. The Silicon arts have a speed and openess which suits the Proac speakers well. The size of my room is approximately 40 m2.
I have never listened to the Concert fidelity line stage I am currently using Kondo which together with the Silicon arts gives a very coherent sound. I have a Kondo cartridge as well which is the reason I stick with the Kondo preamp.
I can not think of a better transistor amp than the Silicon arts. The only negative issue to the amps is their capability to drive heavy loads but for an amp this quality you find a speaker to match.
I am also using my CF 080 LS/X with Venture speakers-the CR-8 Signatures. My next upgrade will be bigger Venture speakers, when I move my system to a much larger room. I am using a Burmester 911 MK3 amp and the synergy between these units is awesome.
Has anyone heard the new V2? I mean the version 2 of the LSX. It is a $4k upgrade for us LS/X owners.