I'm looking for suggestions for a new tube for my preamp. The current one went bad. I mostly use this piece of equipment as a DI for live and recording situations with my p-bass and upright I'm looking for something that gives a warm, try tone, but maybe some dirt if I push the gain a bit. Thanks in advance! Also if you feel my preamp is simply not going to cut it, let me know. I really like that there's gain (in and out) as well as phantom power built into it, so any suggestions are welcome if thepreamp has those characteristics.