Arkham Zephyr 1U Tube Bass Preamplifier

= The Zephyr returns!! =

Reintroducing the Zephyr, a vacuum tube pre-amplifier inspired by the iconic Portaflex Bass amps of the 1960's. Effectively a rackmount version of the Oracle, the Zephyr is housed in a robust 1U chassis and sports a few additional features. The buffered 1/4" output provides ample gain to feed a modern power amp or the line input of your recording interface. The DI output features a high quality output transformer, with Mu Metal shielding for ultra quiet operation.

The heart of the Zephyr is a single 12AX7 tube, selected for low noise and good tone, and fed by a 300VDC power supply.

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 to provide a wide adjustment range with minimal interaction

RANGE control sweeps tonestack "midpoint" anywhere between 150Hz and 1KHz

HI: Gentle rise from 500Hz to 2kHz, at lower Gain settings

MID: +3dB boost at 250Hz

LO: +6dB boost at 80Hz

HPF: High Pass Filter -6dB/Octave at 90Hz

PRE and DI OUT controls. Seperate master volumes let you dial in some grit, and adjust stage volume to the board

THRU: 1/4" TS, takes signal from the input for feeding a stage tuner or additional amplifier

LO-Z: 1/4" TS, output impedance = 150 ohm

DI: XLR with Ground Lift (up is lifted). -12dB relative to Out jack.

Powder-coated steel and aluminum 1U chassis. 19"W x 1.75"H x 9"D. Weight = 5 lb, 7 oz

Power supply included for North American Customers. International customers must provide their own 9VDC Center Negative supply. A rating of 1500mA (1.5A) is recommended.