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Preamplifiers — Vtl (Vacuum Tube Logic) TL7.5 Series III

Description, images, technical data and specifications

Vtl (Vacuum Tube Logic) TL7.5 Series III
Image source — © Vtl (Vacuum Tube Logic)

The new model has incorporated numerous technological advances, while retaining the best elements of the TL-7.5 platform. The proven advantages of the original system architecture include: a fully balanced differential design; a hybrid circuit that combines tubes in a gain stage to provide voltage linearity (less than 2 dB NFB) with a MOSFET buffer for greater current throughput; a high-resolution volume control; and a clean box/dirty box architecture with multiple precision controlled power supplies.

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Specifications

  • Model name

    TL7.5 Series III

  • Analog inputs (balanced)

    4

  • Analog inputs (single-ended)

    4

  • Analog outputs (balanced)

    2

  • Analog outputs (single-ended)

    2

  • Gain (dBu)

    19.2

  • Input sensitivity (mV)

    N/A

  • Output voltage (V)

    30

  • Input impedance (balanced) (Ω)

    50 000

  • Input impedance (single-ended) (Ω)

    50 000

  • Output impedance (balanced) (Ω)

    25

  • Output impedance (single-ended) (Ω)

    25

  • 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)

    1

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

    100 000

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

    N/A

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

    N/A

  • Dimensions (mm)

    445 x 445 x 102 (Control chassis) + 445 x 445 x 153 (Audio chassis)

  • Weight (kg)

    40.82

  • Official link

    https://www.vtl.com/products/preamplifiers/tl7-5-series-iii-reference-preamplifier/

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