I have the Krell TAS in my system right now and it is driving my Paradigm Studio 100s, CC370, and my Studio 20s. Even in high reference volumes, you will have enough head room driving your speakers. The Krell also doubles down from 200 watts at 8ohms to 400 watts at 4. Although I have not auditioned any Arcam amp, based on specs alone the power of the Arcam amp will not be enough for your speakers.
Multi channel amp with similar specs to Krell TAS
Plinius Odeon
BAT VK6200
Simaudio Moon Titan
Anthem P5
Parasound A51
Multi channel amp with similar specs to Krell TAS
Plinius Odeon
BAT VK6200
Simaudio Moon Titan
Anthem P5
Parasound A51