The Orange OB1-500 has a unique sound due to the footswitchable Blend circuit which adds a veneer of controllable gain and increased harmonic content to the upper registers of the input signal. The lower frequencies and clean signal are left alone staying warm and clear just as they would be in a bi-amped setup. Depending on where the Gain and Blend controls are set the possibilities are limitless.
Bi-Amp Inspired The Orange OB1 splits the instrument signal into two paths. One side amplifies the clean signal the other adds up to two stages of distortion to the upper harmonics only controllable via the amps Gain knob. These two elements are combined using the amplifiers Blend control which adjusts the mix between clean and dirty. The Blend control can then be remotely engaged or defeated using the optional footswitch. The Gain and Blends range allows for almost anything from a subtle level boost to cut through the mix added girth and presence at moderate settings to fatten up chorus passages to fully saturated savagery at the extremes. However you dial it the OB1 always maintains the critical low end definition right the way up to the most offensive settings! Active EQ The OB1s highly responsive active three band EQ has been meticulously voiced for maximum effect with minimal fuss. The EQ section is located after the Gain and Blend dials take effect allowing full control over their massive sonic range. The Bass and Middle controls feature +/-15dB of boost or cut whilst there is a range of +/- 20dB on the Treble control. Analog Signal Path The OB1 Series puts proper class A/B power back on the map. All circuitry is completely analog ensuring these amps sound expressive and musical even at ridiculous gain levels. The OB1 Series are Oranges first rack mountable amps suitable for 19″ cases (2U). Enclosed in a rugged powder coated steel chassis the fascia is finished in their classic pics only styling. The amp features balanced DI with ground lift and line level outputs for live and studio use. Specifications Features: Rack mountable (2U) bi-amp inspired bass head with footswitchable gain and blend controls active 3 band EQ balanced DI and line level outputs Front Panel: (right to left) Instrument input with active/passive switch gain blend bass middle treble volume. footswitch input mains switch Rear Panel: (right to left) Speaker outputs (speakon) 1/4″ line output balanced output with ground lift switch Speaker Output Options: Minimum 4 ohm: 1 x 8 ohm 2 x 8 ohm 1 x 4 ohm Output Power: 500 watts class A/B Finish Options: white powder coated steel chassis (2U 19″ rack mountable) Unboxed Dimensions: (W x H x D) 48.2 x 26.5 x 10CM (18.97 x 10.43 x 3.93″) Unboxed Weight: 10.1KG (22.26LB) Orange Amps Guitar-and-Bass 168M
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Orange OB1-500 Bass Amp Head