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Focusrite AMS-ISA-ONE Classic Mic Preamp with Independent DI
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    Focusrite AMS-ISA-ONE Classic Mic Preamp with Independent DI

    Manufacturer: Focusrite Pro

    Item #: FCSR-AMS-ISA-ONE   •   MFG #: AMS-ISA-ONE


    List Price:$799.99
    Our Price:$599.99

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      Cancer and Reproductive Harm -


      Featuring a rugged, portable all-metal enclosure, the Focusrite 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.

      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.

      • 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 controlDedicated insert point
        • Optional stereo 192kHz A-D conversion card
      • Specifications

        • Mic Input Response
        • Gain Range (Mic): 0dB to 60dB in 10dB steps 20 dB of variable gain
        • EIN (Mic): -126dB measured at 60dB of gain with 150 Ohm terminating impedance and 22Hz/22kHz band-pass filter
        • Noise (Mic): Noise at output with unity gain (0 dB) and 22 Hz-22 kHz band pass filter-97 dBu
        • Signal-To-Noise Ratio (Mic): 106 dB relative to max headroom (9dBu)
        • Frequency Response (Mic): At minimum gain (0 dB)-0.5dB down at 10Hz and -3dB down at 125kHz
        • CMRR (Mic): 98dB (Channel 1, 1kHz, maximum gain with 24 dBu input)
        • Crosstalk Channel To Channel (Mic): With [email protected] input to chA, chB output =104dBrA. With [email protected] input to chA, chB output = 84dBrA

          Line Input Response
        • Gain Range (Line): -20dB to 10dB in 10dB steps 20 dB of variable gain
        • Input Impedance (Line): 10 kO from 10 Hz to 200 kHz
        • Total Harmonic Distortion Noise (Line): Measured with a 0 dBu input signal, and a 22 Hz-22 kHz band pass filter0.0001
        • Frequency Response (Line): At unity gain (0 dB)-0.3dB down at 10Hz and -3dB down at 200kHz

          Instrument Input Response
        • Gain Range (Instrument): 10dB to 40dB continuously variable
        • Input Impedance (Instrument): High = greater than 1M Low =greater than 300k
        • THD (Instrument): At minimum gain ( 10)

          High-Pass Filter
        • Roll-Off: 18 dB per octave (3 pole filter)
        • Frequency: Fixed 75Hz measured at the 3dB down point

          Weight & Dimensions
        • WxDxH: 8.7" (W) x 4.09" (H) x 10 - 11.4" (D)
        • Weight: 8.6lbs

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