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PJB BG-75 Double Four Redefines Micro Amp by Jonathan Moody

Jonathan Moody

Over the years, bass players have watched their amps get smaller and smaller. Phil Jones Bass has been on the forefront of this “micro amp” trend with its Briefcase, and the Bass Cub. That’s about to change again. New for 2013, Phil Jones Bass has once again redefined the micro amp with the amazing signature PJB sound with the Double Four amplifier. Sporting new driver design, acoustic loading and the latest in digital amplifier technology, the Double Four looks as if it defies the laws of physics.

We pushed our current expertise with smaller drivers and created the Neo Power 4 inch drivers. These speakers are able to cope with the extreme signals coming from an amplified bass guitar. Each 4 inch speaker is also fed with its own PWM amplifier, an extremely efficient amplifier that runs at a much lower operating temperature. Also, by using an amplifier for each speaker, the bass control is greatly improved, since the damping factor is essentially double.

double Four Review

And it doesn’t stop there. The backs of the speakers are loaded with a Rectangular Auxiliary Low Freqency Radiator (RALFR®), a radiator that operates at the lowest bass frequencies, augmenting the output of the speakers at frequencies from 30 to 150Hz. The cabinet enclosure is heavily braced internally and lined with acoustic damping materials, preventing cabinet coloration and allowing you to hear the TRUE sound of your instrument.

What’s this mean? An amplifier with a lower operating temperature that can last through more rehearsals and gigs and not sit on the tech’s workbench, and that has a well controlled, punchy and tight bass tone that truly amplifies your instrument, instead of coloring it. Whether you’re looking for a bedroom practice amp, a rehearsal amp, a personal monitor or the perfect micro amp for a coffee house gig, the Double Four from Phil Jones Bass is ready to tackle your gig and make you rethink what you know about micro amps.