I am using a naim nac200 nap 200 pre power amp to drive monitor audio GR 20 loudspeakers approx 10 yr old cost around 1500 when new the main source is Cyrus cd xtse+ transport connected thru my naim dac sounds great but can i get a more transparent detailed sound by improvingthe speakers i ad in mind pmc proac spendor b&w new ranges floorstanders preferably as happywith sound but wonder can my system give more with any of the speKers mentioned or even monitor audio range is it worth replacing the gr 20 for a new speaker in 2000 + price. Bracket