he Ridge Farm Industries "Gas Cooker" is a high performance all-valve, twin channel Microphone Amplifier and DI box. It excels in direct injection of high impedance instruments such as electric guitar, bass, Fender Rhodes, Wurlitzer. It may also be used to add a variable degree of valve warmth and presence to any sampler or hard disk recording system for any mono or stereo audio source.

In order to meet professional standards, the Gas Cooker includes a switchable 20dB input pad, a buffered, unbalanced line output (pre-gain control), and both balanced and unbalanced post gain control outputs. The balanced output features transformer isolation with a maximum gain of 3, and switchable ground lift, while the unbalanced output has a maximum gain of 30x, enabling instruments such as guitars, keyboards etc to be matched to the line input of a mixing console.

Carefully designed, high voltage valve circuitry enables the user to vary the drive level to the output tube stage, making it possible to control the amount of harmonics and coloration added to the signal.