What’s in your system today that you also had 10 years ago?

   B&W dm303 speakers with B&W asw300 sub still here.
   Replaced Hafler dh100 pre with Modwright 9.0 swl ss rectified
   just about a month ago.
   Replaced Hafler dh220 with McCormack DNA1  two years ago.
   These proved to be great upgrades....both bought here on Agon.
    Amp from TMR,and Modwright from a great guy here also
    who endured my lengthy emails and was very helpful and sent
    me a pre amp in pristine condition.
    Monster ic's have also survived.....by default but I'm not                 complaining .
     Have a Pink Triangle tt with Fidelity Research arm sitting on
sidelines for awhile now....Yamaha cdp to Harman Kardon cdp to 
Eastern Electric cdp. One of these days ...will get the Pink back
up and get to listen to records again...maybe.

Conrad Johnson Premier 12 tube monoblock amps, 140W/side.
I've had them since the late 90's (as I remember).

Possibly my best purchase.  I love tubes, but needed some that would drive a large variety of speakers (as I switch speakers pretty often).   The CJs have driven every single speaker design I've had, of many different designs (including my MBL Omni monitors - very low efficiency) with exceptional control, punch, delicacy and gorgeous tonality. 
I don't think I'll be giving them up soon.

caspian roksan system 18 years ago

I have had my Conrad Johnson PV-10 and Denon DRS-810 from 1994. I got the Sony TA-N90ES in 1998, Pioneer PDR-05 CD Recorder, Energy Veritas 1.8 and Parasound HCA-1500A in 2000. All are still working good without any issues so far.

conrad johnson premier 14 preamp

Classe CA 200

Meridian 200 transport/263 DAC

I listen to 99% vinyl now but still have the digi hooked up.  Have changed analog several times and of course cables like a revoving door,  until now for a good while.