Are you a member of the Sierra Nevada Audio Club in Sacramento? One of the members may have pair of 1.7s That you can listen to.
I have a Ref 3, Krell Evolution 302, and 3.7s this is a match made in heaven. My suggestion is to mate the 1.7 with a krell or bryston amplifier for the best sound (you could try a D115 as it is also a great sounding amplifer).
Another suggestion is to obtain a Krell 300iL to drive the magnepans. This will sound very very good.
Another suggestion is to send the SP3 back to ARC for the SP3C update. In this configuration the preamplifer sounds like a SP6E or SP8 Mk1
I have a Ref 3, Krell Evolution 302, and 3.7s this is a match made in heaven. My suggestion is to mate the 1.7 with a krell or bryston amplifier for the best sound (you could try a D115 as it is also a great sounding amplifer).
Another suggestion is to obtain a Krell 300iL to drive the magnepans. This will sound very very good.
Another suggestion is to send the SP3 back to ARC for the SP3C update. In this configuration the preamplifer sounds like a SP6E or SP8 Mk1