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Thread: Tube rolling Doshi style

  1. #1

    Tube rolling Doshi style

    I have an Aalap full function pre and the Jhor 90 watt mono blocks

    As you all know - these are so fabulous

    I wanted to extract even more out of Nick's stellar electronics

    I was able to start out with nice tubes. Lightly used tubes bought in near NOS condition

    12AT7 Tele Ecc81s. 12AX7 tungsols 12 BH7 tungsols

    I went to tele Ecc 83s for the 12AX7 tube
    Tried tungsol and rca in the 12BH7
    I went from a coveted Telefunken ECC81 to the cream of the crop Ecc801-s. Oh my
    Even more of the glorious Doshi sound

    After I had tweeked the pre I started on the Jhor 90 watt mono blocks

    I had RCA 12sn7 and a military 12sj7, bought sets of rca backups
    I have wonderful sounding Tungsol EL34s great tonal accuracy, body, detail

    a friend found me a nos double quad set of Genelec 6550 golden lions
    Expensive but they sound incredible
    Giving even more passion into the music
    Well worth it to me

    The great thing is the Doshi pieces sound fabulous with modest tubes
    And can display all the benefits to stellar tube upgrades in all their glory

    Very impressed and content

  2. #2
    Member
    Join Date
    Mar 2013
    Location
    Virginia
    Posts
    68
    Glad you are having a good time with the gear. The goal has always been to use easily available tubes and to have the gear sound very good with new production tubes. This is the only sustainable path since NOS will keep getting scarcer. Use the power of the purse to encourage manufacturers to build better tubes. At our last listening session I was able to compile a list of over 20 new production 12AX7 type tubes. We selected one that provides performance extremely close to NOS siemens and teles for around $25 each.

  3. #3
    Quote Originally Posted by doshiaudio View Post
    Glad you are having a good time with the gear. The goal has always been to use easily available tubes and to have the gear sound very good with new production tubes. This is the only sustainable path since NOS will keep getting scarcer. Use the power of the purse to encourage manufacturers to build better tubes. At our last listening session I was able to compile a list of over 20 new production 12AX7 type tubes. We selected one that provides performance extremely close to NOS siemens and teles for around $25 each.
    Thanks Nick

    Your Doshi designs more than measures up with their engaging magic with readily available tubes

    The Electro Harmonics sound great

    I am curious, what is your new wonder 12AX7 tube

  4. #4
    Site Founder And Administrator Steve Williams's Avatar
    Join Date
    Mar 2010
    Location
    Coto De Caza, California on the 13th fairway of the south golf course
    Posts
    25,805
    I use a Quad set of matched NOS Telefunken ECC801S that Nick installed for me in my Doshi Tape pre.

    http://www.whatsbestforum.com/showth...l=1#post200934
    Steve Williams
    aka oneobgyn
    There's ALWAYS another Steve Williams BUT there's only "oneobgyn"
    International Distributor of Center Stage Feet and owner of PitchPerfect Sound (www.pitchperfectsound.com)
    Dealer Lamm Electronics
    My System

  5. #5
    Junior Member
    Join Date
    Jan 2012
    Location
    Hamden, CT
    Posts
    6
    Hi Audiotom, I did not realize that Nick had a forum on here. Anyway, I'm using the following tubes in my Purist Alaap Mk.II preamp:

    (4) JJ ECC803S gold pin
    (2) GE 12AT7 gray plate, white lettering
    (2) RCA 12BH7 gray plate, red lettering

    I have tried many others and actually prefer the JJ ECC803S over the Telefunken 12AX7. Also, I preferred the RCA 12BH7 gray plate over the black plate.

    Don't you mean Genalex Gold Lion KT88 and not 6550? Genalex never made a 6550, to my knowledge.

    Steve

  6. #6
    What tubes have people used in their Doshi phono preamps?

    There are 3 tubes types: 12ax7, 12at7 and 7247.
    Speakers: Vandersteen Model 7s, 4 M&K ST-150Ts, 1 VCC-5; Amplification: 2 Vandersteen M7-HPAs, CI Audio D200 MKII, Ayre V-6xe; Preamp: Doshi Audio Line Stage v3.0; Phono Pre: Audio Research Phono 2SE; Analog: Basis 2200 Signature with Calibration Base, Vector 4 Tonearm, Benz Micro LPS; Reel to Reel: Technics RS-1500; Doshi Tape Pre-Amp; Multi-channel: Bryston SP-3; Digital: Custom PC> Lampizator Big 7 DAC, Oppo BDP-105;

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