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App 514-721-1518   
ISA Series Transformer-based Pre-amplifier . Rugged portable chassis . classic Focusrite microphone pre-amplifier at lowest cost to date . Flexible Independent D.I. Channel . Independent gain control . Output for routing to an amp . Independent XLR output on rear . Switchable Impedance (4 carefully selected input impedances, including original ISA 110 setting, to suit any microphone . Optional Stereo 192kHz ADC . Can feed either sum of the two inputs to the headphones output, or an external stereo cue mix (such as a stereo mix feed from an interface) via two TRS Jack inputs on the rear of the unit . Dedicated Insert Point allows you to place extra processing between the pre-amplifier or D.I. and the optional converter, such as an EQ or compressor.
Focusrite  Red 1 500 Series
App 514-721-1518   
Built in the UK and featuring the original circuit and components used in the first Red mic preamp designs, the Red 1 500 Series Mic Pre offers the
performance of the original Focusrite Red microphone preamplifier in a new, popular format: the 500 series, or "Lunchbox" portable modular