Just heard a rig that I use all the time for electric and upright played at a Jazz event by a very fine upright player.
A friend who lives in Brooklyn came to Dallas to play a Jazz gig at the Dallas Museum of Art, and needed an amp for her borrowed upright.
She ended up mic'ed to the PA for various reasons, but last night played a local Jazz club and I got to listen to a real artist using my humble rig with a killer band.
I must say that I was pleased by how well it worked. The head is a two+ year old Genz Benz Shuttle 6.0, and the cab is an 8 ohm series 1 Epifani UL210 I bought from TBer TallBoy.
The pickup on the bass was a first generation Gage, and it went directly into the Shuttle, no pre-amp. The borrowed instrument was a good sounding plywood upright.
Mids were lightly boosted around 600z, and the lows were slightly rolled off. Not sure, but I think the tube gain was kept pretty low, with the pre-amp volume up very high. Not sure how high the master was set.
The instrument was in the hands of a true artist, so the beauty of the sound was certainly due in large part to her, but the amp did its part well.
I felt the lows and the highs were well-balanced, and the tone was quite free of the sort of mid-range honk one might get if the input doesn't handle high impedance well.
I am reading the spec, and I think it says the input impedance is >500K ohms—not sure.
In any case, it was a cool experience to hear great playing and also hear my small rig hold its own for a great player and her band—I am really sold on that setup for upright.
