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Preamplifiers — VTL TL7.5 Series III

Description, images, technical data and specifications

VTL TL7.5 Series III
Image source — © VTL

The TL7.5 Series III is VTL's flagship-tier dual-chassis preamplifier, built with comprehensive four-plus-four connectivity and a separate audio chassis. The TL7.5 Series III represents VTL's most ambitious current statement in preamplifier engineering.

Key specs that matter

Four balanced XLR inputs and four single-ended inputs are provided, with two balanced and two single-ended outputs. Gain is 19.2dBu. Output voltage is 30V, matching the TL5.5 Series II. Input impedance is 50,000 ohms on both connections - higher than the TL5.5's 35,000 ohms. Output impedance is a remarkably low 25 ohms on both connections - considerably lower than the TL5.5's 150 ohms. Frequency response spans an exceptionally wide 1Hz to 100,000Hz within plus-or-minus 3dB. The control chassis measures 445 x 445 x 102mm, with a separate audio chassis measuring 445 x 445 x 153mm, together weighing 40.82kg.

Sound and use context

Expect exceptionally clean, transparent signal handling reflecting the remarkably low output impedance, with the distinctive separate audio chassis reflecting VTL's uncompromising approach to isolating noise-sensitive circuitry.

Pairing

VTL's own power amplifier catalogue offers natural, brand-coherent pairings for a coherently voiced, entirely VTL-based flagship system.

Alternatives

VTL's own TL5.5 Series II offers a more accessible single-chassis alternative within the same broader preamplifier catalogue.

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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