Orange OB1-500 500 Watt Bass Amp Head

Orange OB1-500 500W Bass Amplifier Head

The Orange OB1-500 is a powerful Class A/B bass head designed to deliver the massive, harmonically rich tone of a traditional bi-amped setup—all from a single amp. Built for bassists who want clean low-end punch combined with aggressive grind and overdrive, the OB1-500 offers exceptional versatility for stage and studio use.

At the heart of the OB1 series is Orange’s unique Blend circuit, which adds controllable gain and harmonic saturation to the upper frequencies while keeping the low-end clean, warm, and articulate. This creates the effect of running separate clean and dirty amps simultaneously without the need for a complicated rig. From subtle grit to full-on distorted bass tones, the OB1-500 covers an impressive tonal range.

Delivering 500 watts of Class A/B power, this rack-mountable head has plenty of output for demanding live performance situations. The active 3-band EQ provides flexible tone shaping, while balanced DI and line outputs make it easy to integrate into live and recording setups.

Features:
• 500W Class A/B bass amplifier head
• Rack-mountable 2U design
• Footswitchable Gain and Blend controls
• Bi-amp-inspired tone design
• Clean low end with controllable harmonic overdrive
• Active 3-band EQ
• Balanced DI output with ground lift
• 1/4" line output
• Speakon speaker outputs
• Active/Passive instrument input switch
• Heavy-duty steel chassis construction

Speaker Output Options:
• Minimum 4 ohms
• 1 x 8 ohm
• 2 x 8 ohm
• 1 x 4 ohm

Specifications:
• Output Power: 500W
• Dimensions: 18.97" x 10.43" x 3.93"
• Weight: 22.26 lbs

A powerful, modern Orange bass head delivering huge clean lows, aggressive grind, and stage-ready performance in a compact rackmount design.