The PrimaLuna DiaLogue Two: The Absolute Sound Editors’ Choice Award 2015

TAS 2015Conclusion Editor:

The first product in PrimaLuna’s higher performance line of tube units is a real honey, surpassing the ProLogue Two across the board. Rated at only 38 watts in Ultralinear mode, its sounds much more powerful due to its outstanding transformers, but requires speakers that are at least moderately efficient. JH, 195


Information from the website: 

DiaLogue Two - Silver - Front, side with cover - LR-01The DiaLogue Two is a KT-88 based vacuum-tube integrated amplifier, hand-made with the finest point to point wiring, using workmanship that is equal to or better than any product you can buy at any price.

The amplifier is built using finest premium parts. A toroidal transformer for the powersupply. Custom designed -in conjunction with one of the most prestigious transformer-designers in the USA- encapsulated output transformers for lowest hum, wide bandwidth for great bass and extended highs. Ceramic tube sockets. ALPS volume control. Nichicon and Solen capacitors. Gold plated heavy duty speaker terminals and gold plated input jacks. Remote control for source selection, volume and choice of Ultralinear or Triode amplification. Five line level inputs, one HT Pass Thru and one tape out. It is enclosed inside a heavy gauge steel, fully vented chassis with five coats of finish. Each coat hand rubbed and polished.

The Adaptive AutoBias™ circuit, an exclusive to PrimaLuna, monitors and smoothfully adjusts bias constantly and instantly, reducing maintenance and increasing performance because of a dramatic reduction in distortion. For extended life of tubes and switches plus a reduced chance of tube failure/shorts, the amplifier uses a soft-start circuit. Tube plate fusing is used to protect the output stage. Other amps might need a trip to the shop if a tube fails. Not this one. Just plug in a new tube and fuse, and go

For more information about PrimaLuna product check out or If there is NO dealer or distributor contact us DIRECT.

About beheerder

45 years of being with and in the world of high-end audio equipment. As distributor of Krell, Sonus Faber, Cello, Conrad-Johnson and many more, initiator of brands like Kiseki, Cogelco, AH!, PrimaLuna, Mystère and maybe more to follow.
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5 Responses to The PrimaLuna DiaLogue Two: The Absolute Sound Editors’ Choice Award 2015

  1. Rolando says:

    It crashed one valve KT88 my Dialogue Two, and I bought two Sovtek paired and new. What is the most suitable for combining with tubes Prima Luna way?

      Two tubes Sovtek on one channel and two tubes Prima Luna in the other?

    Or each channel with a Sovtek tube and the other tube Prima Luna?

    I tested this configuration and is best looks aesthetically because the Sovtek tubes are slightly smaller. The sound is good and not notice differences, but I think that although the autobias adjust the bias independently on each valve, mix different brands can affect the sound, because each has its own timbre, its hallmark.

    Thanks in advance, greetings from Argentina.

    • beheerder says:

      Dear Rolando. Yes you can do that, but of course most “standard” is to use 4 same tubes. If sound is ok for your solution you can do so. Technically no problem. Best regards, Herman

  2. Well, I’ve already completed the quad, all of the same brand. Thank you .

  3. Rolando says:

    Hello, I return to this topic. I still have all the original valves of my Dialogue Two, were tested with a Hickok tester and all have about 80% of emission, but a single one of them presents strange noises after a while of use. (finally the protection of Auto Bias cuts the sound) As I said before, it took me to change the complete set by Sovtek tubes because I was easy to acquire them in my country.
    But I would like to buy a new tube KT88 with the Prima Luna print to continue using this original set, which to my ears deliver a sound more exuberant than the Sovtek, which I listen with less brightness and dynamics.
    One of my son will travel to USA in October, please, where I could buy this tube through
    Thanks in advance !

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