Primaluna Prologue vs. Dialogue
From what I understand the Dialogue has better transformers (wider bandwith) which equates to more highs and lows. Also it is set with an extra pair of driver tubes (12au7). I have heard both in my house. I don’t think they are day and night different, but I did prefer the Dialogue more. I felt it was more Dynamic. Triode mode is sometimes nice, but overall I prefer the UL mode. |
@aniwolfe - thanks! @linnlingo - I'm aware of flexibility regarding tubes, but only noticeable difference from usual specs mentioned is triode/ultra-linear. Nobody other than aniwolfe said anything about sound difference between the two (of all posts I've found so far). I know that specs are better than for Prologue (caps, wiring..) and am afraid that it could impact the sound in a way that it moves it towards "colder" side of things. Prologue is already not overly warm (yeah I know that tube rolling helps :) ) . If it's just the dynamics, than it's a good change. :) |
bornac-the PL distributor@Upscale Audio will give you solid info to your query. i found upgrading from the PL Prologue series to the Dialogue Premium well worth the extra expense. Since you mentioned the ARC VSI75, thus thread may be of interest to you:: https://forum.audiogon.com/discussions/considering-switching-from-audio-research-to-primaluna-troube... A blind comparison of the ARC vs PL Dialogue Premium. |
First , I do not have any experience with the Prologue Premium . I do have experience with a Prologue II Integrated if that would help . It was a nice piece and very versatile with tubes and music . I owned it for about 13 years with flawless operation . I traded it in on a Dialogue Premium Integrated a few years ago . The Dialogue Premium is the Prologue on steroids , for me . The Dialogue does everything that the Prologue did but to a greater extent , just more of everything . Regarding the sound...I found both units sounded like good SS with the stock tubes . Actually , if you want to stick to the EL-34 sound the stock tubes are pretty nice . It is the small tubes that really open up the sound . Especially the four inner tubes , on the Dialogue . I didn't find much of a difference rolling the two driver tubes , the outer ones or first and last from left to right . I left those as stock . I posted a thread about my tube rolling experience some time ago here on the 'gon . As above , I did not find a big difference with the Triode function and prefer to use the U/L function as well . My speakers only have a 92db. efficiency rating so maybe that has something to do with the functionality . I hope that this will help you . Good Luck . |
@tablejockey - thanks! well, that link was some interesting read indeed. :) @saki70 - I've tried tube rolling in prologue and I've noticed a nice difference when changing from EL34 to 6L6 which I took out of some fender guitar amps. Also tried changing driver tubes and it's equally important change. So, to conclude, it's a fine piece of equipment and with tube rolling I'll get it to sound the way I want. I'm chasing one second hand Dialogue Premium. I'll let you know. |
