To­day I picked up a NAD RDS Stereo Tuner C 440 in IJs­sel­stein, to ex­pand my NAD stack (to get some more space be­tween the cas­sette deck and the amp ;-). It al­ready looks good, but set­ting things up cor­rect­ly in­volves some wiring around the house so cur­rent­ly it just sits dead on top of the stack. I think this kind of com­pletes the stack, but there's al­ways room for a sec­ond 613 or some­thing more ex­ot­ic like a C660 or C616. We don't want to end up with the com­plete stack, we'd rather get like 144 C521s and stack them as an artis­tic in­stal­la­tion...