David, I've seen on various sites and forums that the best way to find a harp newbie is to see who walks in the door with the Blues Jr. in hand. It seems like most of what I read maligns this amp for harp use, but without any real specifics. In the various discussions here and on the new amp lessons, the Blues Jr. is not mentioned as a harp amp to look for.
Why is there such disdain for this box out there on the web? What is your opinion of this amp as a harp unit?
It's fine, but you have to work really hard to "get the tone" out of the amp... good mic, cupping, good technique... etc. It's also a little bit too clean for some people. Players will tent to want to go for an amp with more distortion.
I recently traded my Blues Jr. for a '59 Bassman Reissue (along with cash, of course)....I was quite happy with the BJ, but I wanted a bigger amp....When I first got the stock BJ, I wasn't pleased with the sound, so I did a couple of swaps, and I was then much happier with it....I swapped out three tubes (which is a common upgrade for Fender amps when being used with harp) and I swapped out the stock Eminence speaker for a 1960's Jensen P12R speaker....IMO these changes made the amp sound MUCH better for harp!