Focusrite ISA One Desktop Microphone Preamp

At the heart of the ISA range is the microphone preamplifier with its Lundahl input transformer — essentially the same circuit, based on the original ISA110, that has been used for 30 years in successive Focusrite designs. The input transformer imparts a special character to the sound that can't be truly emulated in any other way: inseparable from the microphone itself, the transformer input stage is ideal for use with classic microphones. But this mic pre has a twist the original didn't have, which makes it far more versatile: four carefully selected impedances allow you to match the microphone to input in different ways. Bring out the character of a classic mic that emphasises a special feature, or go for a totally transparent, modern sound — it's up to you. Whether you're an artist, engineer or producer, you'll appreciate the versatility of the ISA One, with its front-panel DI input. The DI includes low/high impedance switching, an amplifier output, and its own feed to the optional A/D converter and separate rear-panel XLR output.

Features:

• Classic Focusrite ISA series transformer-based microphone preamplifier
• Flexible independent DI channel
• Switchable impedance
• Dedicated insert point
• Optional stereo 192kHz A-D converter
• Lundahl LL1538 Input Transformer
• Backlit VU meter with variable calibration