• compact bass combo amplifier
• solid-state design
• Class D amplifier
• 90 W (RMS)
• 3-band EQ with +/- 15 dB boost/cut per band
• switchable input for active (high-output) and passive (high pickup impedance) basses with mute function
• lightweight construction
• Aux input (3.5 mm stereo jack) or Bluetooth 5.1 with adjustable level
• headphone output (3.5 mm stereo jack)
• adjustable Line out
• 2x 4" PJB "Long-throw" full range speaker
• speaker frequency response from 40 Hz to 17 kHz
• controls for Input Level, Bass, Mid, Treble, Master Volume, Line out, AUX/BT
• 3-way toggle switch for Mute / Active / Passive
• power switch
• USB Type-C connection for alternative power input
• input voltage 90 - 240V AC
• dimensions (W x D x H) 329 x 215 x 203 mm / 13" x 8.5" x 8"
• Weight 5.1 kg / 11.3 lbs
• White tolex cover

With increased power and newly added features, the Double Four Plus BG-80 is a worthy successor to PJB’s legendary BG-75 Double Four model. The BG-80 is a 90Watt single channel bass combo with two four-inch speakers and a 3 band EQ that is perfectly tailored for bass guitar. Other features include an auxiliary input for iPad/iPod, smart phone or drum machine, stereo headphone–out jack and a line out for recording.
Recorded music sounds great through the Bluetooth function (V5.1 with aptX HD). In addition, the Double Four Plus is equipped with a DC input (USB Type-C port) connection which supports a mobile power bank of USB PD (Power Delivery) Protocol. This provides the ultimate in “Tone To Go” and busking possibilities, even where AC power isn’t available. The BG-80 is ideal for all kinds of basses, and can handle the open B string on a 5- string bass with ease.
So how do you get the ultimate bass sound from a small speaker cabinet? PJB has applied its cutting-edge experience in designing small speakers to achieve a 4 inch driver with Swiss watch precision. Using our extensive R&D facility which includes the largest an-echoic chamber in the bass guitar amplifier industry and the transducer Klippel measurement system with laser technology, PJB was able to develop the proprietary PJB “long-throw” 4-inch speakers that have full frequency range up to the highest audio frequencies. Not only does this give greater clarity and transparency to your instrument, but also a high-fidelity sound to any backing track fed into the auxiliary input.
gThe cabinet is small and portable and built to the same high-quality standards of all PJB cabinets. What you hear from the Double Four Plus is the closest you can get to how your instrument actually sounds, and, is remarkably loud for its size. This latest model in the Double Four series is a remarkable achievement in design, features, and tone.