Lampizator Big7 as a preamp

Lampi straight to amp is a pathway I love so much every time I switch to it. 

I've also given consideration to trying a Lampi with volume control in order to eliminate the need for a preamp.  I'm going to need a balanced design, because I'm driving long (9M) ICs.  Any of you folks got a balanced unit, or are you using SEs with short ICs to your amp?  If any of you who have responded are driving long ICs, that would be helpful for me to know. 

I borrowed Lampi Big7
and I am little disapointed
First : build quality is like DIY product( especially in this price )
sonically is good, colourfull with weight and body, but resolution and detail is better in Berkeley
The most important: quality of build in preamp is much better in Berkeley, directly connect to my active speakers /power amplifier no contest BADA wins

@donpen21

I borrowed Lampi Big7 and I am little disapointed

Actually had a slightly similar experience at a private audition of the "Pacific" which, to be fair, sounded very good with a big soundstage, 3dimentionality, and good rendition of detail—but at a price. The guy then played us a Meitner (probably the more expensive one...) which, while excellent, was not as good as the Lampi.
He then switched to a dac none of us had heard of, called "Absolute by Ideon" and blew us away: frequency response more extended than the Lampi, esp in the bass, energy and dynamics beyond what I heard before, details we had not realized were present in the recordings—but esp dynamics and bass. We had the impression it dived +1 octave lower than the Lampi (impression of course) and there was prodigious energy coming out of the speakers. Anyway, thee Absolute played directly sounded near indistinguishable from the sound via a pre amp...Anyway, just a little experience to share.

@donpen21, what tubes were used on the Big 7?  I also prefer using my Big 7 as the preamp.  The tubes do make a difference.