Here are the specs taken from Epifani's website:
For years we've been providing professional bassists superior speaker cabinets designed for power and accuracy. Now experience that same commitment to excellence in our first pre-amp and amplifier creations.
The UL Series Heads from Epifani represent an important step in the evolution of professional bass amplification. Utilizing a proprietary class "D" amplifier, the UL Series Heads were designed for the power, precision and clarity professional bassists demand. The unique, 2 channel pre-amp design allows the user to toggle between two separate foot switchable channels, employ dual instrument inputs and access a foot switchable mid-cut switch for killer slap tone on demand! Other features include a three band equalizer with sweepable midrange, pre-amp mute and treble shift.
Back panel features include:Pedal controller: ch1/ch2, Neutrik Speakon power amp out, AC line in with USA/Europe voltage,direct out with level control & pre/post EQ selector, ground lift, pre-amp out, tuner out, effects send & return with series/parallel selector and all amps are available (by special request) with Jensen transformers.
EPIFANI UL502 HEAD
Colossal power, superb tone and stunning good looks all rolled up in one compact unit that truly delivers! A finely crafted, highly professional instrument, designed with the help of top professionals simply to “get the job done right” from club to arena. Here is a music machine any player would be proud to own.
Epifani’s UL-502 Head is the most powerful and versatile 16lb bass amp available. It is loaded with practical features that the gigging musician can really use including two separate foot switchable channels, dual instrument inputs, and a foot switchable mid-cut switch for killer slap tone on demand!
Other features include a three band equalizer with sweepable midrange, balanced XLR output, preamp out, serial/parallel effects loop and much more! These incredibly “useful” features are what make the UL-502 “THE PERFECT AMP” for every gig, no matter what style you bring.
This unit has been used by us in a couple of demos. Perfect condition. Only minor external dings.