Where did you sink the most cash into?


I'm not interested in how much anyone  spent, but I'm curious what the single most costly item in your system is- ie, amplifier, CD player, etc.

I will go first- in my present set up, it's speakers. 

But I can't live without my ancient Zerostat (the red one) which was probably 1/3 if what they retail for now. My most enduring audio purchase!  
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Leaving music out of it, definitely amp and pre. However, speakers come second on my list of desired upgrades. I'm looking at balanced power first.
Turntable/tonearm. Spending 50% on speakers is not old school, it is only one of popular approaches. Old school is to creatively and individually approach the subject but never have a weak source.
When I started out the conventional wisdom was 50% on speakers! And with my first system, all of $400- a $75 turntable, a $125 receiver, were complimented by $200 speakers!