Here is my list:
The most legendary speaker of all time, the NS-1000x with be midrange and tweeters and pure carbon fiber(not composite) woofers when the rest of the so-called esoteric stuff was being made out of treated paper cone, bextrene etc and being given fancy labels and cost tags.
Yamaha centennial edition MX-10000, NSX-10000, CDX-10000 and TX-10000 totalling a whopping US$22,000 brand new. Yamaha's largest selling studio monitors, NS-10M, sold to over 170,000 studios worldwide.
Yamaha's legendary MX series amps, super accurate and exceptionally warm musical for solid state design.
Yamaha's ground breaking and probably the first DSP integrated amp, DSP-A1000.
Yamaha's latest D-MOSFET 500Wx2 8ohms rated digital amp which is truly groundbreaking in this field, one that even made a die hard analog amp lover into a convert. Yamaha's NS-200/300 speakers, the best to be made by them after the NS-1000/2000/10,000
Yamaha's YST-SW800 sub, the first among few to incorporate active servo class D amp.
Accuphase DP-7V CD player, truly an amazing feat of engineering.
SONY XDP-777ES CD player, Pioneer Elite upside down CD players, Pioneer's budget yet accurate A-400 amps. Technics SL1200 Mk-II turntables, Shure V-15 Mk-III cartridge.
Canton Ergo series speakers, Magnepan speakers, truly the best speakers from the USA.
Pinnacle PN8+, the small bookshelf under $200 with amazing bass.
Many more to list and those I have omitted only out of consideration to keep this post's size at a sane level.