I have not heard the Arcam, but I have compared the Krell with the A5, using B&W 805s speakers, Musical Fidelity A5 CD player and Nordost Red Dawn cables.
That setup might not be very fair on the Krell because the A5 is paired with its sister-model CD player while the Krell is auditioned with a different manufacturer's source. And the cables, while being a great match with the warmer-sounding Musical Fidelity equipment, are perhaps a little too lean for the Krell's starker textures.
But even with those excuses made for the Krell, I was surprised that the A5 won the day so easily. For this listener, it was a no-contest. Whether listening to classical or rock, single instruments or bands, acoustic or electronic, the setup using the A5 amp always sounded the more refined, musical and enjoyable. With the Krell in place (and despite the presence of tubes in the CD source), the sound could be relatively brittle, especially with female vocals.
Obviously, my vote went to the A5.
That setup might not be very fair on the Krell because the A5 is paired with its sister-model CD player while the Krell is auditioned with a different manufacturer's source. And the cables, while being a great match with the warmer-sounding Musical Fidelity equipment, are perhaps a little too lean for the Krell's starker textures.
But even with those excuses made for the Krell, I was surprised that the A5 won the day so easily. For this listener, it was a no-contest. Whether listening to classical or rock, single instruments or bands, acoustic or electronic, the setup using the A5 amp always sounded the more refined, musical and enjoyable. With the Krell in place (and despite the presence of tubes in the CD source), the sound could be relatively brittle, especially with female vocals.
Obviously, my vote went to the A5.