Featuring a rugged, portable all-metal enclosure, ISA One combines the classic Focusrite microphone preamp with a flexible, independent DI channel and optional 192kHz precision A-D conversion. At the heart of the ISA range is the microphone preamplifier with its Lundahl input transformer - essentially the same circuit, based on the original ISA 110, 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, while the modern twist of variable input impedance allows for a new degree of flexibility.

The ISA One is a high quality preamplifier, which can be used to record microphone, line-level or instrument sources. Microphones and line-level sources are connected on the rear panel, whilst instruments are plugged directly into the front panel. The front panel also features gain controls and other settings such as phantom power and input impedance. A traditional moving-coil VU and an LED peak meter are provided, both with a dial on the rear panel for calibration, to ensure a suitable signal level is achieved. 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 and an amplifier output, and its own feed to the optional A-D converter and separate rear-panel XLR output.

Focusrite ISA One Mic Pre Features:

• Classic ISA mic preamp design featuring Lundahl LL1538 input transformer.
• Flexible independent DI channel.
• Switchable input impedance including classic ISA 110 setting.
• Headphone output with volume control.
• Dedicated insert point.
• Optional stereo 192kHz A-D conversion card.

Each ISA One Retail Box Includes:
(1) Focusrite ISA One Classic Mic Pre with Independent DI