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Preamplifiers — ModWright Instruments LS 99

Description, images, technical data and specifications

ModWright Instruments LS 99
Image source — © ModWright Instruments

The LS 99 is a preamplifier from ModWright Instruments, built into a remarkably compact chassis with comprehensive five-input connectivity and an extraordinarily wide bandwidth. The LS 99 brings ModWright's considered engineering to line-stage preamplification.

Key specs that matter

Two balanced XLR inputs and three single-ended RCA inputs are provided, with two balanced and two single-ended outputs. Gain is 11dBu. Input impedance is 30k ohms on both connections, with output impedance at 100 ohms on both connections. Frequency response spans an extraordinary 20Hz to 150,000Hz within plus-or-minus 3dB. At a remarkably compact 266 x 114 x 76.2mm and 7.71kg, the LS 99 maintains a space-efficient preamplifier chassis for its comprehensive connectivity.

Sound and use context

Expect exceptionally clean signal handling reflecting the extraordinarily wide 20Hz-150kHz bandwidth, packed into a compact chassis consistent with ModWright's considered engineering standards.

Pairing

The comprehensive five-input connectivity comfortably accommodates a source-rich system, and ModWright's own PH 9.0 phono stage shares the brand's coherent engineering philosophy.

Alternatives

ModWright's own LS300 offers a more substantial alternative with somewhat greater bandwidth and measured performance documentation within the same broader preamplifier catalogue.

Specifications

  • Model name

    LS 99

  • Analog inputs (balanced)

    2

  • Analog inputs (single-ended)

    3

  • Analog outputs (balanced)

    2

  • Analog outputs (single-ended)

    2

  • Gain (dBu)

    11

  • Input sensitivity (mV)

    N/A

  • Output voltage (V)

    N/A

  • Input impedance (balanced) (Ω)

    30 000

  • Input impedance (single-ended) (Ω)

    30 000

  • Output impedance (balanced) (Ω)

    100

  • Output impedance (single-ended) (Ω)

    100

  • Maximum output level (balanced) (dBu)

    N/A

  • Maximum output level (single-ended) (dBu)

    N/A

  • Volume control range (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    20

  • Frequency response high +/- 3dB (Hz)

    150 000

  • Signal to Noise Ratio (SNR, unweighted) (dB)

    N/A

  • Total Harmonic Distortion + Noise (THD+N) (%)

    N/A

  • Dimensions (mm)

    266 × 114 × 76.2

  • Weight (kg)

    7.71

  • Official link

    https://www.modwright.com/products/ls-99-balanced-tube-preamplifier/

ModWright Instruments LS300

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