DaBender

Didn't a lot of the vintage amplifiers have an accordian input? Here's a modern choice, but probably way over your budget - http://www.musicmagicusa.com/amplifiers.html

I'm a 50 year old computer programmer who has been gigging for most of the last 15 years or so. I have a blues band consisting of two guitarist/vocalists, harmonica, bass & drums. Typical gigs are playing to 100 people or less, though we occasionally play a festival with sound provided by a "real" sound company (or a reasonable fascimile thereof). The only thing we run through the PA is vocals and a mic on the harmonica amp, so I'm much lighter on equipment than all the posts so far. I have an EV 457 and a 457a for the vocals, and I used to mic the harp amp with a Shure SM57 but recently started using a Sennheiser E609 that I use on my Pro Jr. for another gig. I have a Soundtech Megamix powered mixer that supposedly puts out a bit over 400 watts at 4 ohms, and a Soundtech PL602M monitor amp with 9 band eq that puts out slightly more. The mains are Yamaha Club IV 112s and the monitors are PV TLM 112s. PROS: Not much money invested, easy to setup and breakdown, and people tell us we sound "awesome". CONS: - I can hear a bit of harshness when we have to push and would love to upgrade speakers sometime, but I would prefer not to have any items heavier than 45 lbs, which is the case with my current gear. I also am intrigued by the thought of a powered sub and micing the bass drum, but we seem to get plenty of dancers with the current setup.