Welcome to the Machine …. PrimaLuna DiaLogue Premium Integrated Amplifier 2012 (Part 3)


Looking at the pictures of the inside of the DiaLogue Premium Integrated Amplifier makes me think of our AH! Njoe Tjoeb cd player. While it started off as a good quality cd player with tube output stage we added step by step different options. In the beginning a player with lot of space, in the end a player (if all options were used) with almost no empty space left. Certainly if 3 Super Tube Clocks and an extra transformer to supply these, are added. Same thing we start to see here in this amplifier.

We decided to say goodbye to the good old Tape Output to make space for a Sub Out. Personally I don’t know a lot of people who use a sub, but in USA it seems to be almost as normal as a pair of main speakers. If you look at the picture you see near the backside of the amp the PhonoLogue board for which we found a new mounting system (the PhonoLogue is not connected, it is just mounted). Next to that you see the new board for the sub out and behind that the special power supply for the PhonoLogue. As I already said, it’s getting fuller and fuller inside there.

We also found sonic improvement by moving the UL/TR relay switch board closer to the output transformers. The OTP has now been integrated on the UL/TR relay switch board.

About hermanvandendungen

Almost 40 years of being with and in the world of high-end audio equipment. As distributor of Krell, Sonus Faber, Cello, Conrad-Johnnson and many more, initiator of brands like Kiseki, Cogelco, AH!, PrimaLuna, Mystère and maybe more to follow.
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12 Responses to Welcome to the Machine …. PrimaLuna DiaLogue Premium Integrated Amplifier 2012 (Part 3)

  1. Francis says:

    I still prefer a tape output for connecting a nice headphone amplifier.

    • hermanvandendungen says:

      Hi Francis,

      Maybe a dedicated full tube PrimaLuna headphone amplifier instead?

      Ciao,

      Herman

  2. I was wondering about the “Sub out” output. Is it a mono or twin RCA output? Have you implemented a low pass filter, if so what slope and frequency control? Or is this just a re-labeling of the tape out? Could it be used as a pre-amp output too? That would be great for bi-amping…

    Great machine!

    Cheers

    • hermanvandendungen says:

      Hallo,

      Sorry for delay in answering. We have not implemented a low pass filter for “Sub out” as in most subwoofer already a low pass filter is already used. It is a special circuit, not just a re-labeling of tape-out. No it cannot be used as pre-amp out. Sorry about that.

      Best regards,

      Herman van den Dungen

      • No worries about the delay, you were in China, and it’s rare to have manufacturers answer so many questions, so thanks, Herman!
        What do you mean by “special circuit”, is it not just a standard pre-out? Is it a single mono RCA, or a double?

        Cheers!

        • hermanvandendungen says:

          Single mono RCA. With special circuit I mean a dedicated pcboard for this. It is the middel of the 3 small one you can see in the picture above.

  3. Armin says:

    Hi Herman
    good articles, like them
    Armin

    • hermanvandendungen says:

      Thanks Armin. We are just back from China checking parts and production. We could make some last minute software changes. Now the amp remembers the settings from before switching off. Good for us old guys.

  4. hermanvandendungen says:

    Hi Francis,

    Maybe a dedicated full tube PrimaLuna headphone amplifier instead?

    Ciao,

    Herman

    • Roberto Chiabodo says:

      Hi Herman,
      I’ve found today this post.
      I’m a very happy owner of a Prologue premium Integrated and it’s a pleasure listtening to it paired to my Stirling LS3/5A, but for family’s “mental health” I often switch to my Sennheiser HD800.
      I use a dedicated Musical Fidelity amp, but this can seems to be born for tubes.
      is there any way to connect them to Prologue, maybe with a capacity resistor connected to speaker out?
      Thanks a lot and my compliments for this beauty of an Amp!
      Roberto

      • hermanvandendungen says:

        Dear Roberto, I would love to help you out, but simply do not have the time ánd it’s the job of the dealer you bought the amp from and who certainly will be able to help you.

  5. Rubi Pritzel says:

    I usually use an external headphone amp for convenience…

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