Read the threads about the Jeff Rowland Design Group Capri. So far here on A'gon it's silenced an ARC Ref3 and a CJ Premier. Don't let its low price fool you.
The chassis is solid billet aircraft grade billet aluminum with incredibly quiet and transparent circuitry. For the ultimate in resolution add the PC-1 Power Factor Correction.
You might also consider retiring your Rowland 5 and consider replacing the whole sheebang with a Rowland Continuum 500, which is essentially a Capri, two 501 mono-blocks and two PFCs in one gloriously eligant chassis. The Continuum's only $8800.
You can add a phono stage to the Capri and Continuum for only $355.
Read my reviews, Guido's and others here on the 'gon. Of course, if $2700 for the Capri isn't enough, the $18,000 for Jeff's cost-no-object, battery powered, Criterium may wet your appetite at $18,000. I haven't herad that one yet, but it's gotta be good, knowing Jeff.
Dave