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Arkham Sound Oracle: Vintage-Inspired Tube Pre-Amplifier 

Arkham Sound Oracle preamp for bass
The Arkham Sound Oracle is a single-channel vacuum tube pre-amplifier that pays homage to the legendary Portaflex Bass amps of the 1960s

The Arkham Sound Oracle has been updated and refined. This single-channel vacuum tube pre-amplifier draws its inspiration from the iconic Portaflex Bass amps of the 1960s. Designed with a focus on delivering top-notch performance, the Oracle offers a range of features that will elevate your guitar-playing experience.

Arkham Sound Oracle

The Arkham Sound Oracle is equipped with a buffered 1/4″ output, ensuring you have ample gain to drive a modern power amp or connect to the line input of your recording interface.

The newly updated design now runs on 9 V which is then boosted internally to 300 V. It’s a versatile choice for bassists who value both tone and convenience.

Arkham Sound Oracle bass tube preamp

Versatile as an Effect Pedal

For those who want to use the Oracle as an effect pedal, it’s as simple as turning down the Master control – with all knobs at noon, you achieve unity gain. This flexibility means you can easily integrate it into your pedalboard setup.

Arkham Sound Oracle bass tube preamp

High-Quality DI Output

The Oracle’s DI output features a high-quality output transformer, complete with Mu Metal shielding for ultra-quiet operation. Whether you’re recording in the studio or playing live, you’ll appreciate the pristine sound this pre-amplifier delivers.

Arkham Sound Oracle XLR DI out

Tube Magic Inside

At the heart of the Oracle lies a single 12AX7 tube, carefully selected for its low noise and excellent tonal characteristics. This tube is powered by a robust 300VDC power supply, ensuring that your bass signal receives the vintage warmth and richness it deserves.

Arkham Sound Oracle 12AX7 tube

James Tonestack for Tonal Perfection

The Oracle features the James Tonestack, a two-band tone network popular in Hi-Fi, classic Ampeg, and Orange amplifiers.

Its deceptively simple design is equally versatile and forgiving, known for its inability to produce a bad tone. If you’re used to Fender’s Treble/Middle/Bass controls, the James Tonestack may feel different but equally rewarding.

Specifications

– IN: 1/4″ TS, Input Impedance = 1 Meg ohm
– GAIN: Up to +32dB at flat EQ settings.
– TREBLE, BASS controls use a James Tonestack for a wide adjustment range with minimal interaction.
– RANGE control sweeps tone stack “midpoint” anywhere between 150Hz and 1KHz.
– HI: Gentle rise from 500Hz to 2kHz, especially at lower Gain settings.
– MID: +3dB boost at 250Hz.
– LO: +6dB boost at 80Hz.
– HPF: High Pass Filter -6dB/Octave at 90Hz.
MASTER: Dial it back while boosting gain for more distortion.
– OUT: 1/4″ TS, output impedance = 150 ohms.
– DI: XLR with Ground Lift (up is lifted). -12dB relative to Out jack.

Sleek and Sturdy Design

The Oracle boasts a powder-coated aluminum chassis, measuring 4.75″ x 4.75″ x 2.32″ and weighing 1 lb, 8 oz. It’s both rugged and stylish, designed to withstand the rigors of the road.

Oracle powder-coated aluminum chassis

Power Supply

North American customers will receive a power supply included with their Oracle. International customers should provide their own 9VDC Center Negative supply rated at a minimum of 1500mA (1.5A).

Oracle 9 volt power

Pricing and Availability

The Oracle is available at a price of $750, excluding shipping. It’s a must-have for any bass player looking to capture the essence of vintage tube amplification in a modern, versatile package. Don’t miss out on this opportunity to take your bass playing to the next level.

More Information

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