Is the Leben CS600x unbeatable?

I totally agree about the Synthesis A100.  With a lot of systems, the smaller 40 watt A40 might do as well.  For the money, I cannot think of better integrated amps, and on top of that, a very good DAC is “thrown” into the bargain.

Yet another vote for the Synthesis A100. I have one and it is the best amp I have owned. I like it so much that I bought its little brother, the A40, to compare. It will arrive on Monday.

This amp is something special, besting amps that cost more than twice the price in my system. And as Larryi said, the onboard DAC is very, very good.

New Audio Frontiers Performance 2A3 MKII - WBF referral on great O/96 match

The Leben is very good. However the Accuphase and Sugden Class A were amazing too. I loved the Accuphase e-800 with all Devore’s including the baby’s. I also had some wiring issues and a channel outage on the Leben, whereas the Accuphase was bullet proof. 

For the O96, one of the best amps is the Komuro 300s. Amazing. Upgrading the tube in the Leben is also a good option. Airtight, Shindo, and Audio Note UK are all good options as well.