Hifiverse

Power amplifiers stereo — Vtl (Vacuum Tube Logic) S-400 Series II Reference

Description, images, technical data and specifications

Vtl (Vacuum Tube Logic) S-400 Series II Reference
Image source — © Vtl (Vacuum Tube Logic)

Tube stereo power amplifier. Reference Series. Output power: At 4 ohms Tetrode - 400 Watts, Triode - 200 watts; At 8 ohms Tetrode - 300 Watts, Triode - 150 watts. The VTL S-400 power amplifier is part of the American company's Reference series of equipment. It uses a number of technical solutions used in the top-end Siegfried monoblock power units, but it has a stereo design. With a huge power of 400 watts per channel, which is enough to play any compositions with any speaker systems, the VTL S-400 is at the same time capable of transmitting the most subtle nuances of a piece of music.

What is it?

Ask AI to scan specialized sites and forums, evaluate the impressions of using the product, its advantages and disadvantages and get a summary.

Specifications

  • Model name

    S-400 Series II Reference

  • Input sensitivity (mV)

    1000 - 2000

  • Input impedance (balanced) (Ω)

    48 000

  • Input impedance (single-ended) (Ω)

    48 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • Max current (A)

    N/A

  • Output power (8Ω) (W)

    Tetrode = 300, Triode = 150

  • Output power (4Ω) (W)

    N/A

  • Gain (dBu)

    N/A

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

    20

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

    20 000

  • Signal to Noise Ratio (dB)

    90

  • Total Harmonic Distortion + Noise (0% global feedback) (%)

    N/A

  • Total Harmonic Distortion + Noise (100% global feedback) (%)

    N/A

  • Max power consumption (W)

    1600

  • Damping factor

    N/A

  • Dimensions (mm)

    290 x 610 x 610

  • Weight (kg)

    159

  • Official link

    https://www.vtl.com/products/power-amplifiers/stereo-amplifiers/s-400-series-ii-reference-stereo-amplifier/

Vtl (Vacuum Tube Logic) S-200 Signature

More components

  • S-200 Signature

    Power amplifiers stereo

    Vtl (Vacuum Tube Logic) S-200 Signature

    The VTL S-200 stereo power amplifier is well known to connoisseurs of high-end audio playback due to its excellent performance and reasonable price. The new version of the amplifier uses a fully balanced differential input stage, from which the signal passes to a differential phase distributor and a push-pull low-resistance output stage with an improved, fully balanced, dual transformer.

  • ST-150

    Power amplifiers stereo

    Vtl (Vacuum Tube Logic) ST-150

    The VTL ST-150 is a stereo amplifier with more than 150 watts per channel (300 watts stereo power) that delivers excellent sound clarity and sufficient power in one compact package, while delivering exceptionally realistic and detailed sound. The ST-150, made exclusively by hand by experienced craftsmen using the highest quality parts, is a high-quality, high-power stereo tube amplifier offered by VTL.

  • ST-85

    Power amplifiers stereo

    Vtl (Vacuum Tube Logic) ST-85

    The VTL ST-85 is a compact stereo amplifier using 4 EL34 lamps, delivers a solid 60 watts of power per channel and offers full “VTL sound”, but at a real price. Using the classic "workhorse" approach that formed the basis of VTL sound, the EL34 models are made in a compact package with short signal transmission paths.

hifiverse