Integrated Amplifier Recommendations Needed

Used Rogue Audio Cronus Magnum II's go for around 2 grand.

+1 for Parasound.  I recently upgraded my TV/family room system with a lightly used Parasound Halo integrated purchased here on a-gon under $1500.  I have an older pair of PSB Synchrony Ones in a very large room and the change has made a significant impact on the overall sound.  It is a tough room acoustically speaking, yet the improvement was immediately noticeable.  Greater bass impact and articulation and a seamless soundstage that extends beyond the width of the speakers.  I’ve only had it for two weeks but I am delighted.  

The Halo is a full featured integrated with a pretty decent DAC, MM/MC phono section and a balance control.  

Though I currently have only one, I plan to upgrade to a pair of subs in the future and the Halo can accommodate that with an excellent circuit that provides a high pass filter and it has a front panel control for subwoofer output as well.  

A new Parasound HINT 6 runs $4k but a used Halo integrated can be had for less than two grand.  There may be some better sounding tube or solid state amps out there, but the Halo is a solid all-around performer with a smart feature set making it an excellent value.  

The Yamaha A-S2100 recommended by @helomech is a solid candidate. The Yamaha integrated has a very quiet and excellent phono stage if you run a turntable. No built in DAC if you want/need that feature. 

I am a big fan of some Denon models, such as the PMA A110. Not so much of the new Yamaha.

In A/B comparisons with my speakers (Stirling Broadcast 88s/ Borresen X3s/ Philharmonic BMR Towers) the PMA A110 and Yamaha 2100 are not vastly different. Both sound equally powerful, both have a slightly forward presentation (“2nd row” VS more typical “5th row,” going by the ol’ concert hall analogy), and both are very quiet. The Yamaha has greater tube-like lushness/texture in the midrange, while the Denon is less colorful—more typical straight-no-chaser solid state sound. The Denon’s midrange is ever so slightly smoother, probably owing to its class A bias in the first one or two watts and its 2nd-order dominant distortion. However, the Yamaha hits back with stronger bass authority in the lowest two octaves. 

If one ignores the fact the Denon has no balanced inputs, and doesn’t have any pre-outs, then it is perhaps the better value, considering both its phono stage and DAC are competitive or even superior to some good stand-alone units. The Yamaha lacks the excellent DAC but is otherwise the more versatile option. 

What I find most intriguing about all these Japanese integrateds is the similarities in voicing and design/build. The Luxman 507Z produces the same sort of “2nd row” presentation as that of the Yammie and Denon. In fact, I found the Luxman almost indistinguishable in sound from the A110. All of them have two-prong connection to the mains power. All use EI-Core transformers, and all have similar build quality on balance. Even the ergonomics of the Yamaha and Denon remote controllers are so similar that one would be forgiven for assuming they were designed by the same person. 

Anyhow, I’m huge fan of these Japanese integrateds. Everything I’ve owned or trialed from U.S. or European brands doesn’t come close for the money—they’re either sonically inferior or not built nearly as well. That’s especially true with regard to noise floor. 

Used I'd recommend the Hegel H190, 150wpc 8ohms, 250wpc 4 ohm....would be more than enough....and has a very slight warmer tone.

Or the Heaven 11 Billie Amp MKII, 120wpc 8ohms, 215wpc 4ohms....class D and a tube preamp stage.....can be found used for about $1,500, but they rarely last a day or two when they show up. Check out some of the reviews by British Audiophile, Steve Guttenberg, Jay's Iyagi, Steve Huff, Nemo....etc, all really good. I set up a small system with it for a friend, he's extremely happy