Infinity Irs Beta


I recently purchased a set of the Irs Betas. My system consists of a Krell Kct Preamp, Krell Kps28 CD player, Krell Fpb400 cx which I am powering the mid,high panels and using the cast interconnects between them and a Krell Ksa300 for the bass towers with the servo unit. Would tubes on the top end be a big improvement? Any folks here run tubes on their Betas and have you compared the two? It sounds wonderful as is.
rvito
Paul McGowan (PS Audio) owns both IRS Vs and Betas. He is friends with Arnie Nudell and has done extensive updates to his Vs. He has not mentioned working on his Betas. From Paul's website here is an interview with Nudell where he mentions his own preference for tube amplification, at least up to a point.

https://www.youtube.com/watch?v=-6mvhO8fVPs
The last IRS I heard was at PS Audio in February 2014. They hosted the Colorado Audio Society meeting so that they could show off their new DSD DAC.

If you guys ever get a chance to hear these monsters, it's truly an experience not to be forgotten.

I've heard their Beta's too. Still one of the best.
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Geez, that set of IRS V in the video above is pristine. Every driver has been restored to like-new condition. I'm sure they've gone through the wiring, bass amps and crossover also.
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Two of the absolute top systems I've ever had the pleasure of listening to are the IRS Betas owned by a good friend's brother in law driven by ARC electronics and the IRS Reference 5, and specifically owned by Arnie Nudell at one time himself where the speakers were completely rebuilt by master speaker magician Bill Legal, over 500 hours he told me rebuilding them. That IRS 5 system IS the most magical of any speaker I've ever heard in that they presented small scale music chamber music, as an example, with the finesse and focus of a mini-monitor and Beethoven, the most DIFFICULT music for any audio system to produce IMHO closer to the live event. Still, you have to hear Beethoven live to experience what his music is all about.