The best integrated amplifier

Pass Labs INT-150 would be my pick, plus you can audition it at home in your system without risk other than paying for original to and from shipping. Any other's in your list that will loan you an amp to try out ? I bet not. Try Pass first. RenoHiFi

The Luxman 509u integrated amp is wonderfully musical, beautifully built, and powerful - 120W into 8 Ohms, and 240W into 4 Ohms.

I auditioned several of the amps mentioned above, and the Luxman won me (and my wallet) over.

I've auditioned the LAVARDIN and the LFD and also the AUDIOMAT before I bought.All were outstanding.

LFD was my personal choice between these but subject to the clear qualification that it appeared to very sensitive to one and all of a proper matching to (i) the source, (ii) the speakers' and yes ... (iii) using LFD's own top-shelf (and expensive ...sigh) cables (ICs and speaker cables)

In a properly tailored system it is magical and was my personal #2 choice overall in my ultimate purchase. This illusory search for audio nirvana (clearly a value judgement)in our common hobby is more of a journey rather than a destination.

I recommend adding the Boulder 865 to your list. I prefered it to the Pass integrateds - better resolution and more alive sounding. Different strokes for different folks. Haven't heard that particular Simaudio unit, but in general I have found their stuff to be lower res sounding and more "wooly" than some of the other brands on the list. Just my 2 cents.

I second the Luxman. I "downgraded" to a Luxman L-550AX about a month ago (20 W class A, no tube hassle), it's a beauty. There is a higher power class A (30 W, L-590AX) and a line of other Lux integrateds that are AB (much higher power, like the 509u that another member suggested) I believe. Some useful features for me at least include a MC Phono stage, a loudness control, headphone jack (late night listening). But its the sound that makes the Lux special. Driving Gallo Ref 3.5 speakers, I feel no need at all for more power (but I do have a fairly small listening space). If you're not familiar with the brand, check out their web site. And they have big meters that light up (ala McIntosh).