Phil Jones Bass Nanobass X4 Bass Combo Amplifier

Take your bass rig anywhere with Phil Jones! The Phil Jones Nanobass X4 combo amplifier features a 4" speaker, 35 watts, and a 3-band EQ for tone sculpting.

Nanotechnology breaks the sound barrier with the X4 Nanobass, which is the most compact and portable combo amplifier ever designed by Phil Jones Bass for desktop and practice applications. It is a highly efficient mini engineering marvel that redefines transportability and "Tone To Go". It is a 35 Watt amplifier with a 4" speaker and 3 Band EQ that not only rocks with bass; it will also provide the dazzling tone for other instruments including guitar, ukulele, violin, and electronic drums.

The practical and versatile design includes an auxiliary input compatible with iPads, iPods, and drum machines, and is Bluetooth-equipped for music listening enjoyment and other applications. PJB's proprietary NeoPower 4-inch speaker delivers a full frequency range that achieves ultimate tonal clarity and transparency for instruments as well as high-fidelity sound to any source fed into the auxiliary and Bluetooth inputs.

The X4 weighs just over 5 lbs and is small enough to fit in a backpack. It is available in Black, Red, and White colors. As with all products in the PJB family, it is constructed from the highest quality materials and built to provide years of enjoyment and "Tone To Go" anywhere in the world with its built-in worldwide AC voltage input.

-Amplifier: Digital with DSP
-Power Output: 35 Watts
-Speaker: 1 x N52 Neo-Power 4inch speaker
-Frequency Response: 72Hz 15KHz
3 Band EQ, Bass shelf 100Hz, +/-15dB
Mid 1KHz Bandwidth 120Hz-10Kz, +/-15dB
Treble shelf 10KHz, +/-15dB
-Input: AUX-Input Jack, Bluetooth5.0 (aptX HD)
-Output: Headphone-Out
-Input Levels:
-Instrument: 240 mV 2 V
-AUX: 300mV (MAX)
-Bluetooth: 500mFFS
-Power: AC 100-240V/50-60Hz
-Dimension: 6.3 x 7.9 x 7.8 inch (W x D x H)
-Net Weight: 5.3 lbs
Dimensions and Weight in Packaging
Shipping Weight: 7 lbs
Shipping Dimensions: 10 x 9 x 9 in
Manufacturer Part Number (MPN): Nano Bass X4B
Shipping Weight: 7 lbs
Shipping Dimensions: 10 x 10 x 9 in
Manufacturer Part Number (MPN): Nano Bass X4R
Shipping Weight: 7 lbs
Shipping Dimensions: 10 x 9 x 9 in
Manufacturer Part Number (MPN): PJB Nano Bass X4W

For support or warranty questions, please contact the manufacturer:
Phone: 855-227-7510 Ext. 103

Reviewers gave this product an overall rating of 5 out of 5 stars. (1 ratings)
Submitted August 17, 2022 by a customer from

"Little in size, big in sound"

Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
I'm a guitar/Bass player for over 50yrs. I own all pro gear Music Man Stingray Special Bass $2500 and an Ultra Fender Jazz Bass $2200 I play through a Markbass Little Tube 800w Head and 2 Markbass Cabinets. I play in bands I wanted a "small" Bass Amp to set beside my Computer after searching I found this Bass Amp and was skeptical to say the least a 4" speaker It arrived today, plugged it in my Music Man Stingray I almost dropped to the floor this Amp kicks butt, might just take it band practice!!!!! A++++++ used my Music Man Bass............ it sounds GREAT!!!!!
11 of 12 people (92%) people found this review helpful. Did you?
Thanks for your opinion!


  • 8 x
FREE -Day Shipping!
Get it  for
Get it by if you order within
Shipping to