New Yamaha a-s3000 and a-s2100 integrated amps ??

No big deal.

I have had the A-S2000 and currently use the A-S2100

Both are great integrated amps. Yes the 2100 is smoother. There is also more bass heft to the 2100. I have had all kinds big name gear to compare and the 2100 is as good or better in many cases to components from Cary etc. Yamaha did an excellent job designing an Integrated that can go head to head with anything under 10k. The A-S2000 is also extremely good considering its quite low price in comparison.

I also had an A-s500 and A-s700 in my workshop system. The 700 was oassable but the 500 was not. Obviously those are much cheaper units and good compared to the big box junk for more $ but not Hifi.

The 2000 is excellent and the 2100 is superb. I powered Dynaudio C1 with the 2100 and it was fantastic. Currently powers Sonus Faber Liuto and has a great tight control on the low end. The only thing I didn't like about Yamaha they have now fixed. If you needed service their warranty depots sucked. Now they offer 10 years on these and anything wrong in the first year means new unit, not refurb like they used to do. 

I have the A S2000 and the matching C S2000 SACD PLayer.  Both are built like a tank and sound great.  I use these daily and can report no issues.

@honeybee2012 

" I have the A S2000 and the matching C S2000 SACD PLayer.  Both are built like a tank and sound great.  I use these daily and can report no issues."

The same can be said of my A-S1000/CD-S1000.  Great build and heft and so far trouble free.  Though I am very pleased with the "lower" S1000 models, if the price was right I would step up to the S2000's or S2100's.

Bill

No need same circuit on 2000 and 1000 the 2000 has a balanced input that's it.  The 2100 is not better than the 2000 it uses mosfets instead of Jfets. Mosfet has more of a tube like sound. Jfets been around longer some think they have more detail. I've heard both amps I got my 2000 for 1699.00 brand new. To change to the 2100 notice I said change not upgrade would be a minimum of 1k or more for a different sound not better your mileage may very. 1k can buy a lot of records maybe you have old speakers there are a lot of good speakers around that price point. The Martin Logan 15 or 35 or SVS ultra prime kef ls50's. You could get a Mac mini and a nice Dac music fidelity v90 and get Audirvana stream tidal and your library. Audirvana At is incredible much bigger upgrade than changing out an amp.  Point is these are bigger upgrades IMHO than changing from a 2000 to a 2100. Heck you can even get a great turntable at that price difference. And putting goo on your innards of your amp won't get you there either. Lmao if you know what I mean.