Dartzeel w/Other Preamps.

I’m guessing the likelihood of someone having heard/compared the Holo and the Dartzell is pretty remote. Maybe pm member mikelavigne regarding the Dartzell itself and see if you can assess from his comments the distinctions. Mike has Dart gear.

Also, if you are not a member of WhatsBestForum maybe consider joining, there's a specific Dartzell Forum within it. Mike is a member there as well

Aye. 

I also had the dart combo. Someday I replaced the NHB 18 with the MFA baby reference preamplifier. Never looked back. Don’t waste your money. IMO darts are extremely overrated. I sold them both.