Featuring tight dimensions and backed up the 70 Watts of full yet tight bass sound delivered by Class-D amplification, the Phil Jones Bass BE-17 Bass Engine hits every mark. The linear analogue preamp and power amp sections of this lightweight combo bass amplifier ensure highly efficient performance, which immediately translates into big and defined tone with plenty of body, given full voice by the mounted 7 inch Proprietary PJB Ferrite woofer. Basically, no expense, effort or thought has been spared in the development of this wee stomper - right down to the component level. The Phil Jones BE-17 Bass Engine: Big, Portable Sound To back everything up with plenty of sonic punch, Phil Jones has also loaded in a 3 inch tweeter, the same model featured in thousands of professional PA speakers, simply because it boasts such an impressive frequency range, spanning 31 Hertz to 22 kilohertz. This doesn't just voice this amplifier for electric basses, but an array of other amplified instruments, so whatever you're jacking into it, the output is treated with expert balance, and can be tweaked with precision via the fitted set of three-band EQ, level and volume controls. Fully Equipped It also doesn't matter if you're jacking in an active or passive bass, since the input has been coupled with a three-way selector switch so it can be adapted to match your model, and when you flip the same switch into the Mute position, you can unplug a jack lead without causing any potentially damaging pops and crackles. Next to an AUX input and stereo line-output for external equipment, this combo supports CD quality wireless audio streaming via the newly developed Qualcomm V5.1 (aptX HD) Bluetooth codec. Plug in a set of headphones, pair up your phone and drill bass lines into the wee small hours without bothering anyone.