Replacement for DeHavilland Ultraverve


I have a DeHavilland Ultraverve. It sounds great, no complaints.  I need a little more functionality-mono and phase buttons are what I'm after. I see a Herron 2A preamp on Audiogon. Any other suggestions would be appreciated. The rest of the system: Bryston 4B SST, Bryston 4B (2nd zone), Vandersteen 3A Sig, Luxman E1 phono, Amadeus with Dyna 20 LOMC, Marantz SA14S1 CD/SACD. Balanced connections are not a priority for my system. 
fbpearce
Thanks, appreciate hearing from someone who’s heard both. The BP26 lots of flexibility for sure. 
hello
why don't you talk to dehavilland about it, it is simple task to modified your preamp,, dehavilland is indeed a very good tube amp, 
Thanks, good suggestions. I’ve checked out the Herron but haven’t thought of asking DeHavilland about a modification. 
Followup-I sent an email to DeHavilland about a mono switch. They asked for a couple of days to try to put a mono switch on one of their shop preamps and emailed back that it was feasible. I sent my Ultraverve to them and it got back quickly with  a toggle switch on top that gives me mono when I need it. It works well and sounds great. I get to keep the preamp I love and can now accommodate my vinyl recordings too.