DECWARE.....ZTPRE anyone have any expeiriance with one ?

Thanks for your input, Br3098. I see that the manual provided at the website which contains the schematic I looked at is dated 7/2016, and the schematic page within that manual states "last revision 5-14-2016." Perhaps the design has changed since then.

As I indicated earlier, the design illustrated in the schematic would result in deep bass rolloff that is inconsistent with the frequency response spec shown at the website, and would be audibly significant in the case of speakers capable of reproducing the bottom octave with reasonable accuracy.

Regards,
-- Al

are you dead set on getting the ZTPRE ?

there are other options available for tube preamps.    one that comes to mind and has been mentioned in the forums is this site

http://aricaudio.com/tube_gear.php

I think Steve likes his Bass deep. Give him a buzz. 
LTA MZ2 is great! 

@jmolsberg, agreed, the MZ2 is incredible. I have 2 of them and need to sell one now that I have the Micro ZOTL Preamp. As someone who has owned both the MZ2 and ZTPre I can say the MZ2 is superior but is single ended not balanced. I did love the look of the ZTPre though.