Mesa Boogie Bass-800D Bass Amplififer Head

The MESA/Boogie Bass-800D redefines professional bass amplification by combining the legendary valve tone of the iconic Bass 400+ with the power and portability of the Subway Class D series. Designed for players who demand vintage warmth and modern versatility, the Bass-800D is a compact powerhouse built for todays touring and recording bassists.

Its tube-driven preamp is directly inspired by the revered Bass 400+ architecture, enhanced with Boogie Channel topography from the Subway TT-800 for added warmth and dynamic range. The result is a harmonically rich foundation with authentic valve character and expanded overdrive capabilityperfect for genres ranging from funk and R&B to rock, metal, and beyond.

Instead of the 400+s graphic EQ, the Bass-800D streamlines tone-shaping with intuitive front-panel controls: Low/High Gain, Deep, Bright, and a rotary High-Pass filter. These smartly designed switches let you sculpt your tone quickly and musically, without the fuss of surgical EQ adjustments. At 800 watts of Class D power, this head delivers explosive punch and clarity while remaining lightweight and travel-friendly.

With modern connectivity including dual SpeakON outputs, headphone out, AUX in, tuner out, a mute remote jack, and USB device charging, the Bass-800D is equally at home on stage, in the studio, or on the road. Built in Petaluma, California, it honors Mesas storied heritage while embracing the future of bass amplification.

Features

• 800 watts of Class D power in a compact, lightweight chassis
• Valve-driven preamp inspired by the classic Bass 400+ with TT-800 enhancements
• Expanded gain for warmer character and subtle, musical overdrive
• Front-panel voicing controls: Low/High Gain, Deep, Bright, and High-Pass Filter
• Two locking SpeakON outputs with 2/4/8 Ohm impedance switch
• Comprehensive I/O: Headphone Out, AUX In, Tuner Out, USB device charging, and FX loop
• Footswitchable mute (optional footswitch not included)
• Built in Petaluma, California, USA with Mesa/Boogie quality and reliability

Specs

• Series: Subway Class D
• Power Output: 800 Watts @ 4 or 2 Ohms, 400 Watts @ 8 Ohms
• Preamp Tubes: 1 x 12AT7
• Power Amp: Class D
• Voicing Modes: 2 (Low Gain, High Gain)
• Front Panel Controls: Gain (Low/High), Deep, Bright, High-Pass Filter, Master Volume, 4-Band EQ
• Switching: Footswitchable Mute (Optional Footswitch)
• Outputs: 2 x SpeakON Speaker Outputs, XLR DI Out
• Additional I/O: Headphone Out, AUX In, Tuner Out, FX Loop, USB Device Power
• Impedance: Selectable 2, 4, or 8 Ohms
• Dimensions: 3.125″ H x 13.25″ W x 9.25″ D (79 mm x 337 mm x 235 mm)
• Weight: 5.5 lbs (2.5 kg)
• Accessories: Optional Carry Bag
• Made In: Petaluma, California, USA