If you know Ampeg, you know they build quality bass guitar amplifiers. This amp is no exception!
The Ampeg B4R is an all-solid-state amplifier. There are no tubes to wear out or break. So the amp is very reliable.
The amp has all the bells and whistles, including a graphic equalizer, texture (tube-like distortion), bi-amp capability (high and low), tuner out, mute button, line out (XLR and 1/4"), effects loop, etc. This is a true pro-caliber rig!
It contains two amplifiers to run two (or more) cabinets or put them in bridged mode for more power!
The owner's manual is located here: https://ampeg.com/pdf/B4R.PDF (Please note my amp is an older model with binding posts and no Speakon connectors. Other than that, the specifications are the same.)