Last week I received the Wiim Ultra as an upgrade from my Wiim Pro Plus. The Pro Plus was set to fixed volume and connected to the Sabaj A30a full-digital amplifier (200+200 w on 4 ohm, a little jem) via Toslink. In the new setup the Wiim Ultra acts as a preamp (variable volume), is conneced to the Sabaj via Coax, and I keep the Sabaj volume fixed at 80 (as if it were a power amp). The Martin Logan Dynamo 700w subwoofer is connected to the Wiim Ultra with a crossover frequency of 40-50 Hz (I'm still playing with that). When playing music with the other pair of speakers I have, the Elac Vela BS403, I find a sub crossover frequency of 70 Hz to be OK. Overall I am very happy with both the Sabaj A30a and the Wiim Ultra, obviously the Ultra being the new "toy" I think it sounds better than the Wiim Pro Plus but I am fully aware that is just my imagination. For around €/$ 800 the Sabaj A30a/Wiim Ultra combo is VERY hard to beat. My only concern is leaving the Sabaj with the volume set to 80, if something goes wrong with the Wiim volume when I turn it on I could risk blowing my speakers.
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