Orange OB1 500 Bass Head

“BI-AMP”-INSPIRED DESIGN

The OB1 splits the input instrument signal into two separate paths. One amplifies the clean signal, with all the clarity you would expect from Orange. The other adds stages of gain to the upper harmonics only, controllable via the amp’s Gain knob. These two elements are combined using the amplifier’s Blend control which adjusts the balance between clean and dirty. The Blend control can then be remotely engaged or defeated using the optional footswitch.

The gain and blend range allows for almost any tone, from a subtle level boost that cuts through the mix to added girth and presence at moderate settings that fattens up chorus passages, and fully saturated savagery at the extremes. However you dial it in, the OB1 always maintains critical low-end definition, right the way up to the most offensive settings.

ACTIVE EQ

The OB1’s highly responsive active three-band EQ has been meticulously voiced for maximum effect and minimal fuss. The EQ section is located after the gain and blend in the circuit, allowing full tonal control over the entire range of sounds. The Bass and Middle controls feature ±15 dB of boost or cut, while there is a range of ±20 dB on the Treble control.

ALL-ANALOGUE SIGNAL PATH

The OB1 series puts Class A/B power back on the map. All circuitry is completely analogue, ensuring these amps sound expressive and musical, even at ridiculous gain levels.

RACK-MOUNT FRIENDLY

The OB1 Series are our first rack-mountable amps, suitable for 19-inch cases. Enclosed in a rugged powder-coated steel chassis, the fascia is finished in Orange’s classic “pics-only” styling.