Amp upgrades under $3K for bookshelf system


Hello all,

I am looking for suggestions given the mind blowing number of options available. I currently own a Onkyo TX-RN626 Home Theater amp that I am looking to upgrade. Its been fine for general TV surround sound but I am now only looking to power Sonus Faber Venere 2.0 Bookshelves with a Energy (also could be upgraded/removed) powered sub. I have a Technics 1200MK2 Turn Table for Jazz Vinyl primarily. I really want something that can give me great sound at relatively low levels in about 1000 sq ft of general listening space. Living room/open kitchen with wood floors. I am looking to stay under $3k but have some room if necessary (used suggestions are great). I don't have a phono preamp but would certainly factor that in as part of the system. Thanks in advance.
telemarcer
I recommend the Rega Osiris stereo integrated amp currently retails for $3k. This is an analog integrated amp. No DAC. You can get an external dedicated phonostage preamp. 
There are so many choices for your budget, new and used.  You should start reading and see what you looking for in an amp narrow it down a bit and then ask.  
Thank you for your replies. I have been reading for weeks it seems but still don't know where to start when it coms to trying to rank them based on my system needs.