Hi I have a "mint" Phil Jones briefcase amp. Plugged in once and played for 15 minutes. Otherwise brand new. Comes with nylon cover. Amazing sound.
Here's the specs
At 30 lbs. and 100 watts, the Briefcase easily handles the low E string and can even accommodate the low B! 5-band EQ lets you dial in the proper tone and a variety of outputs allow you to practice in private, expand your sound with an extension cabinet or go direct to a mixing board. And for the ultimate in portability, it can run on 12V sealed lead acid battery! The Briefcase is great for both electric and acoustic basses.
Model: Briefcase
Type: Practice/studio combo with battery power option,100W output,1CH,5 band EQ,limiter,Active/passive input,headphone out, DI out, pre-amp out
Size: 15.5 x 6.7 x 17.3 inch (H x W x D)
Accessories: Power cord, DC cord, Allen key set,nylon cover
Power output: 100W RMS
Speakers: 2 x PJB PIRANHA TYPE B
Net Weight: 30 lbs/14 kg
Volts: 120 or 240V AC or 12V DC