Aims Vocal Sonic IV tube amp from the early 70s. Aims is an amp company from Arizona who made great amplifiers in the 1970s. This amp is technically a PA head but can also be used for guitar or bass. Lots of headroom. Great for using pedals. 4 12ax7 pre-amp tubes. 2 12at7 rectifier tubes. 2 6550 power tubes. It’s been serviced and is good to go. EQ and reverb. $500.