The Oracle

Bass Tube Preamp

-- a bearer of rich tones, featuring the full Arkham EQ in a pedal sized enclosure !

The Oracle features:

• 12AX7 preamp tube* selected for low noise and good tone, run at 300V B+ (not a starved plate design)

• Dual Lo-Z outputs, Out 1 for normal use (power amp, interface, etc.). Out 2 may be used additionally to feed a DI box.

• Gain, Treble, Bass controls - uses a James Tonestack to provide a wide adjustment range with minimal interaction.

• Range control – sweeps the tonestack "midpoint" anywhere between 150Hz and 1KHz

• Hi switch – adds a "bright cap" to the circuit to open up the high frequencies a bit.

• Mid switch – provides a healthy bump around 250Hz

• Lo switch – another healthy bump, this time at 80Hz.

• HPF switch - moves -3dB point from 30Hz to 100Hz. It's a gentle roll-off(-6dB/octave), used in conjunction with the Bass control and boost switches to shape your low-end tone.

• Master volume, dial back while boosting gain to add some grit

• Powder-coated aluminum chassis. 7.39"​【19 cm】 x 4.70"​【12 cm】 x 2.06"​【5,2 cm】.

http://www.arkhamsound.com/oracle.html