Ditto. 10-15 minutes here. By cartidge takes longer to "warm up" (4 sides of an LP) than my tube pre and tube amp do. Actually the cart is "mostly" ready-to-go after about 7 minutes on the first side, but it sounds a little "flat" and "lifeless" until about 4 plays. After which it starts to sound way more "liquid." But that is probably my POS Music Hall Tracker cart ($79 Goldring Elan OEM?) more than anything else.
Warm Tubes
I've been reading up on tube pre amps and in particular the ConradJohnsons. In different posts prople have mentioned that the keep their pre on all the time or 1 hour warm-ups, etc. Never have been around tubes audio so evn though it seems obvious it still suprised me. No just flipping on the system. Is a system warm up of an hour or more the rule? Any other nuances with tubed equipment I should be aware of? Thanks, Dave