Info Jeff Rowland & Rowland Research model 7

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GUSTAV1966

Member
2009-11-21 8:34 pm
Italy/naples
  • #1
    Good morning, I would like information about jeff rowland.
    I would have the opportunity 'to buy 2 mono jeff rowland golden / black
    but 'I want to know what difference exists between the Jeff Rowland and Rowland research model 7. what are the concerns of those objects JR / RR
    I've always liked but I'm afraid being a bit 'old age'
    I currently am satisfied with my setup and my sound I have a pair of natural well-sounding speakers and very linear and consistent Triangle Magellan SW2 with preamplifier Spectral DMC 30 ss and mono amplifiers in class A Pass Labs xa 160.5.
    and just the model 7 take the place of XA 160.5 Pass.
    thank you very much for your advice about.
    Gustavo Naples Italy
     
    G

    GUSTAV1966

    Member
    2009-11-21 8:34 pm
    Italy/naples
  • #3
    MY QUESTION AND 'THE FOLLOWING;
    I WOULD LIKE TO BUY THE MODEL 7 JEFF ROWLAND AND PRE CHOERENCE THEN THESE SHOULD BE TO REPLACE MY CURRENT PASS XA 160.5, AND I WOULD LIKE TO KNOW 1, WHAT CHANGES BY JEFF ROWLAND A RESEARCH ALWAYS ROWLAND MODEL 7, E 2, THEN WHAT I HAVE SEEN worry L 'ETA' WHO.

    THANK YOU FOR YOUR VALUABLE ADVICE
     
    jacco vermeulen

    jacco vermeulen

    Member
    2004-10-27 10:15 am
  • #7
    Ah, then you could tell Gustavo that Mr. Rowland changed the name of the company from Rowland Research to JRDG in the early 90s.

    The Model 7 was manufactured both as a RR and a JR(dg) product.
    Officially there are 3 versions of the Model 7 : Series I, II and III.
    (there apparently was also a Series-O, or a pre-production model, there's a thread on those at this forum)
    1990 manufacture was still Series II, the Model 9 of 1992 was only manufactured as a JRDG power amp.

    There's not been a Series IV.
    Circuitry of a JRDG Model 7 is basically the same as a Series III Rowland Research.
    Cosmetics of both differ, rear panel + inside, but Mr. Rowland has made a habit of making small changes without upping the Mark/Series a point.

    (I'd keep the 160.5 if I were him. Sorry for the Gustava typo)
     
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