Yep, true balanced design and with a remote that is very precise in controlling volume. I run mine via balanced IC into my Alchemist Forsetti APD20A "Signature". It is dead quiet, natural, and immediate, with a stage that is huge and holographic. Transparency and presence in the midband is exceptional -- best I have ever had in any of my systems. Adjustable gain makes amp matching easy. Very flexible unit with multiple ins and outs, both SE and balanced.
The 5687's are used as output buffers, I believe. Line stage uses 2 pair of 12at7, although I notice the website now says 12au7, so that is a recent change.
Cheaper than that used, obviously. Great value even at new price.