I use the original Peachtree Audio Decco in my system. I employ it as a DAC/preamp, so it's sort of the heart of my system. I use an Acurus DIA-100 MkII as my power amp, and I feel this gives me a nice improvement over the Decco's native amp stage.
...
What I like about the Decco:
- Tube stage 'warms' and smooths out digitally originating signals especially. Not too much, just right.
- 3 digital and 2 analog inputs allow me to use a CDP, stream from my laptop, and bring in an analog signal from my TV (Blu-ray, cable, etc.) without adding a DAC. Great connectivity solution.
- Can use the Decco's binding posts to connect a sub.
- Remote control! For volume, especially. It's huge.
What I don't like:
-Amp stage doesn't do stereo separation or clarity as well as my Acurus.
-That's about it.
...
Now, keep in mind, my Decco is a retired, refurbished unit that cost me $600. The Decco 2 and Nova are later, higher end products with better DACs and presumably upgraded amp stages, especially the Nova, which I believe is about $1200.
The Primaluna looks great. If it's not a matter of convenience for you, that may be a great amp for your needs. But you're going to need a DAC (I presume) and you won't have remote control unless your DAC or preamp has one. If you're going integrated, it may be worth it to have everything in one, like the Nova would give for less $$.
Maybe Decco 2 or Nova as preamp with the Primaluna or this (less $$$)
http://www.vista-audio.com/products/i34/index.htm as amplifier?