Not really asking which one is better here, unless you could say one is actually better than the other one. I'm going to look at the Yamaha PB-1 but the guy says he also has a Ampeg SVT-IIP preamp for sale. I currently have a Alembic F-1X and BBE Bmax (no-T) pres. So I don't want to duplicate my current tone with the new preamp I choose. I've never been real big on the Ampeg tone but could prolly use it OK in my blues band. Though I also have a VT pedal so will that cover my Ampeg-ish tone enough? I read raves on the PB-1 and for the good price he is offering it for I'll prolly pick it up either way. But a couple TBers I PM'd told me the Yammie's quite heavy at about 12-14lbs. And that its rather deep into the rack space. Not really a deal breaker as my new Crown amp is only 8lbs and tho I have it currently in a shallow Gator 4 space, I also have a SKB 3 space rack w/built in casters and a handle that will accept the deeper gear. Though I'm hoping the Yamaha will still fit in a shallow case. While doing a search here, I also saw some threads where some Ampeg pres had some issues, don't recall if this SVT-IIP was one of those models. I don't have a build date on either one. Well any helpful replies are welcome, this may split into the Ampeg tone lovers and others. But just looking for general good/bad features of these two pres before I go check em out. FYI, not really looking to record with either so mostly for live gigs only. Thanks all, ernie.