Arkham Sound - The Zephyr

The Arkham Zephyr

This preamp is an elegant tube Bass preamplifier inspired by Ampeg’s iconic Portaflex series.

• 12AX7 preamp tube* selected for good tone and low microphonics, and run at correct voltages (not a starved plate design)
• Mosfet buffered Lo-Z output, drives modern solid state power amps or recording interfaces with ease.
• 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 (without any mud!).
• HPF switch - a gentle roll off beginning around 100Hz
• Mute switch - sweet silence at the flick of a switch
• Low impedance output, with an additional “thru” jack for splitting your Bass signal to another amp.
• Balanced DI output, featuring a custom wound Cinemag transformer for full frequency response. Ground lift switch for good measure.
• Separate master volumes for preamp out and balanced out. Lets you dial in some grit, and adjust stage volume to the board.
• DC referenced heaters, for ultra quiet operation.
• Turret board construction, Mil-spec Teflon wire, etc.
• Carling switches, Switchcraft jacks, Belton sockets, etc.
• Powder-coated steel 1U chassis. Weighs ~8 lb.
• Anodized aluminum faceplate, all stainless steel hardware.

Please Note: Arkham Sound builds their preamplifiers to order, which can take some time. Current lead time after order is 4-5 weeks.

Shipping: Due to size restraints, we are unable to offer free or discounted shipping for this brand.