Ablang - Both the affordable Sim Audio i-1 and the Naim Nait5v.2 use robust power supplies with a fairly simple and efficient circuit. Unless you intend on cracking walls and shaking picture frames off a desk; they should be able to provide ample current for anything in Dynaudio's Focus range.
A 50w tube integrated would also suffice in most case scenarios. Although I admit; I'm not the right guy to confront about affordable tube integrated amps. While I love the warm touch of a valve, I haven't encountered too many truly affordable amps that could tickle my fancy.
My suggestion would be to follow up with the folks at Naim or Sim Audio. Ask them for their opinions. If I were in your position, I'd eye-ball either the Sim Audio i-1/CD-1 set-up, or the Naim CD5i / Nait 5i *version 2* set-up. You get synergy, form and function, well engineered electronics that are a proven match with Dynaudio (and even Totem) loudspeakers.
All the best!
A 50w tube integrated would also suffice in most case scenarios. Although I admit; I'm not the right guy to confront about affordable tube integrated amps. While I love the warm touch of a valve, I haven't encountered too many truly affordable amps that could tickle my fancy.
My suggestion would be to follow up with the folks at Naim or Sim Audio. Ask them for their opinions. If I were in your position, I'd eye-ball either the Sim Audio i-1/CD-1 set-up, or the Naim CD5i / Nait 5i *version 2* set-up. You get synergy, form and function, well engineered electronics that are a proven match with Dynaudio (and even Totem) loudspeakers.
All the best!