The SLI-50 is a super-cool unit.
A note (correction) about the Cary SLI-80 Sig...it is class A if you switch it into triode. The amp is switchable while you listen to 80w ultralinear to 40 w triode.
It also has switchable 4 and 8 ohms speaker taps.
What you think your speakers are impedence-wise may not be true. So this allows you to make that decision easily by what sound best to you.
The headphone jack is similar the CAD-300SEI which is so popular. When I got an SLI-80Sig in I tried the headphone jack and it was so quiet, even with my 20 year old AKG K-240 headphones which are effecient. So I thought perhaps the headphone pre-amp was solid state. I could not call as it was a weekend, so I took it apart. It's tube. Pretty cool.
Lastly it has pre-amp out for powered subs or bi-amping and remote control. The price changed slightly as they now include oil filled capacitors, but it is still below the price asked about in this thread.....
