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Buzz Audio REQ 2.2

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The REQ is a combination of passive filter circuits and active amplifier stages. Parallel resonant chokes and capacitors form the frequency selective part of each band and these are coupled into the amplifier stage via the boost/cut control. The resulting equalisation is described by Buzz Audio as "surreal" and it never sounds hard or harsh. The low frequencies remain tight and powerful with the high frequencies clear and well defined.

Many other equalizers using passive filters have limited centre frequency choices, but the REQ boasts 72 different frequencies split over four bands per channel. The high and low bands can be switched to bell or shelving mode and the two bell mid bands have two centre frequency ranges. Each band has a bandwidth (Q) control and if the high or low bands are switched shelf mode, this control reverts to a shelf "slope" control. In addition a passive high pass filter and a variable "saturation" module are provided. The saturation module converts the REQ into a more "vintage" sounding unit by adding harmonics to the signal via the use of a steel audio transformer driven by a "single ended" old style Class A amplifier. The low frequency response is also altered by the saturation control, depending on the position of this switch.

Features

• Fully discrete hi-bias wide bandwidth differential Class A amplifiers.
• Real choke and capacitor resonant circuits that sound fantastic.
• 72 frequency choices per channel.
• Individual discrete power supply regulators for each EQ band.
• Large easy to adjust knobs.
• High quality long life switches and potentiometers.
• Modular internal construction for easy future servicing.
• Mastering and recording versions.
• Unique transformer saturation module.
• Overall and individual band bypass switches.
• High-end balanced input and output amplifiers.
• Input connectors with loop through.
• Two output connectors on each channel.
• Rugged chassis construction.

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