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PrimaLuna EVO 400 video review

  • The EVO 400 is an all-tube integrated amplifier from PrimaLuna. It is designed in the Netherlands – with heavy input from US distributor Kevin Deal – and made in China. The tube complement sees an octet of EL34 power tubes bridged with a quad of 12AU7 pre-tubes by a pair of 12AU7 driver tubes. All internalised output transformers and toroidals are wound in-house and the wiring protocol is strictly point-to-point. The tube sockets are ceramic. The volume pot is an ALPS. Nichicon and Realcap supplied the capacitors; WBT the speaker binding posts. The single-ended inputs number five and are gold-plated with additional RCA sockets added for HT bypass and mono/stereo subwoofer outputs. Don’t be fooled by the phono stage input. It only functions once the MM pre-amplifier board has been fitted to the amplifier. (In my case, it wasn’t). A quarter-inch headphone socket adorns the front panel but the amplifier must be switched into ‘HP’ mode for the main circuit’s feed to be suitably rediverted. Put down the multi-meter and screwdriver though! One of the EVO 400’s key selling points is its adaptive auto-biasing circuit that works continuously in real-time to ensure that each tube receives the correct dose of voltage at all times. Price? US$5600.

    🎥 Camera: Olaf von Voss / John Darko
    🎬 Editor: John Darko
    🌈 Colour: Olaf von Voss
    🕺🏻 Motion GFX: John Darko
    💰 Ad segment: Jana Dagdagan

    🎵 Song IDs? Playlists of all music heard in this video – and other videos – can be found on PATREON: http://www.patreon.com/johndarko

    Further information: PrimaLuna USA


    👉🏻 As seen in this video…

    PrimaLuna adaptive auto-bias
    📖 http://www.primaluna-usa.com/adaptive-autobias

    Beginners guide to tubes/valves in audio
    📖 http://spartanmusic.co.uk/blogs/smblog/beginner-guide-to-tubes-valves-in-amps-audio

    Zu DWX
    📖 https://darko.audio/2023/05/zu-announces-dwx-medium-format-standmount-loudspeaker/

    Klipsch Forte IV
    🛒 http://howl.me/cimB6UfWWkx

    Vivid Audio Kaya S12
    📺 https://darko.audio/2022/03/vivid-audio-kaya-s12-video-review/

    NAD Masters M23
    🛒 http://howl.me/ciLEalJcW8g

    Lyngdorf TDAI-3400
    📺 https://darko.audio/2023/05/lyngdorf-tdai-3400-cd-2-video-review/

    Darko.Audio may earn a small commission from items purchased via affiliate links.

    Written by John Darko

    John currently lives in Berlin where he creates videos and podcasts for Darko.Audio. He has previously contributed to 6moons, TONEAudio, AudioStream and Stereophile.

    Darko.Audio is a member of EISA.

    Follow John on YouTube or Instagram

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