Is it worth it? DAC question

You already own the iFi, so plugging it to try it will cost you nothing, so just do it.  That said, I've never listened to it, but I've heard the BlueSound DAC isn't very good.  I own the iFi Zen DAC Signature V2 and the iFi Zen One Signature and I find their somewhat muddy performance lacking.  You might find the iFi's affect works well with the Tektons.

Ifi makes some great products, so does NAD. I’ve recently put a ifi zen signature dac and streamer in my vintage system and am very very pleased with it. I would say they are both in the same league, so it will come down to your preference. However, I’d bet you’d really like the ifi dac. Good luck.  

Good advice here. Experiments are fun and with a DAC, telling. I added an Orchid to my Node 2i and it was a huge improvement. Huge.

That said, which "Node" matters. They recently upgraded the DAC.

I did an external power supply on my Node 2i via PD Creative. Teddy Pardo is a nice unit but nearly or equal the price of the Node itself, I believe.

The iFi Zen appears to have only a USB input. You can only use it if you have a Node N130 or Node X.

Thanks again for the good advice---I've got the cables to connect just need the 5v adapter then I'll try it. @parker65310 Good to know about Silnote Audio--I'm in VA, will def check them out.