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The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts.com products


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Tubegopher
MechEngVic
teftamaqua
ttocs
dalemurray
boeingpilot
Rbertalotto
audiobill
Chad Spackman
Rec
BryceJ
tubes4hifi
16 posters

    new amp style for 2022

    tubes4hifi
    tubes4hifi
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    Post by tubes4hifi Fri Jan 07, 2022 1:28 am

    OK, finally, real life photos of the new amp style for either ST70 or ST120
    this chassis is 14" wide x 10.5" deep instead of the usual 13" wide x 9.5" deep
    same price - no quad cap, all the caps are under the hood, and the PCB is not exposed
    the "classic" versions are still available.
    M125 version coming soon, with stainless steel bottom

    www.tubes4hifi.com/amps.htm

    new amp style for 2022 VTA80-front2

    new amp style for 2022 VTA80-rear2

    StevieRay, ramon68, Blitzen, Donspokane, MarcVBelgium, rustybutt and Madhyamika like this post

    tubes4hifi
    tubes4hifi
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    Post by tubes4hifi Sat Jan 08, 2022 3:53 pm

    doing the design this way saves ALOT of $$ and it also makes assembly ALOT EZer !
    I'm old school on the webpages, standard HTML coding from 10-15 years ago, no certs

    ttownscott likes this post

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    BryceJ


    Posts : 18
    Join date : 2019-04-25

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    Post by BryceJ Mon Jan 10, 2022 2:42 pm

    The amp looks very nice Roy. I have used 90° power plugs in the past if I didn't like the power plug pointing straight up. Are you also going to have an octal version of this top plate?

    Tubes4ever and ttownscott like this post

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    Rec


    Posts : 24
    Join date : 2020-03-11

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    Post by Rec Tue Jan 11, 2022 9:52 am

    Its awesome. Overdue! Also, where would the stepped Pot go? I want to tear down my 120 and build on this chassis! Smile
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    Chad Spackman


    Posts : 17
    Join date : 2019-02-01
    Age : 64
    Location : Pennsylvania

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    Post by Chad Spackman Wed Jan 12, 2022 8:37 am

    I agree! That’s excellent
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    audiobill


    Posts : 425
    Join date : 2014-03-13
    Location : Albany, NY

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    Post by audiobill Wed Jan 12, 2022 8:49 am

    Looks great, Roy!!
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    Rbertalotto


    Posts : 81
    Join date : 2021-02-25

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    Post by Rbertalotto Wed Jan 12, 2022 9:36 am

    Looks great.....Top is plastic?....Would a stainless steel option be available?

    Wish power switch was on front.
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    boeingpilot


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    Location : Central PA

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    Post by boeingpilot Wed Jan 12, 2022 10:43 am

    Prefer the old style. For trouble shooting like to have access to the PCB. Also not a fan of the top mount connectors.

    That said, I can see how this makes sense from a manufacturing and heat management point of view
    dalemurray
    dalemurray


    Posts : 56
    Join date : 2018-09-25
    Location : Wheaton Illinois

    new amp style for 2022 Empty Re: new amp style for 2022

    Post by dalemurray Wed Jan 12, 2022 10:52 am

    I like the design but concerned about the vertical connections, I think it would add undue stress to the connections.

    Also, I though audio input in the front was desireable due to noise?
    tubes4hifi
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    Post by tubes4hifi Wed Jan 12, 2022 3:20 pm

    thanks for the comments and feedback!
    So I've got six of these ready to go.
    Volume pot? Just drill a hole for it.
    Plastic top? R U kidding? Solid 1/8" aluminum plate.

    ttownscott likes this post

    ttocs
    ttocs


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    Join date : 2019-05-20
    Location : Northern Illinois

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    Post by ttocs Wed Jan 12, 2022 3:25 pm

    I'm anxious to see the M-125 version!
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    teftamaqua


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    new amp style for 2022 Empty Re: new amp style for 2022

    Post by teftamaqua Wed Jan 12, 2022 6:18 pm

    Prefer the old style. For trouble shooting like to have access to the PCB. Also not a fan of the top mount connectors.

    That said, I can see how this makes sense from a manufacturing and heat management point of view

    I agree with all of this. Also, the plug seems kind of close to a heat generator (transformer), I would not like my audio connections to go straight up, trying to secure speaker cables could be difficult. With the exception of the input audio connections on the front, I like the current design. Just my two cents. Thank you
    MechEngVic
    MechEngVic


    Posts : 96
    Join date : 2019-01-16

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    Post by MechEngVic Fri Jan 14, 2022 11:05 pm

    Would love to see photos of the innards!
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    Tubegopher


    Posts : 2
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    Post by Tubegopher Sun Jan 16, 2022 7:16 pm

    I like the design and it is safer if you have kids around. I would love to see inside the chassis. Smile
    tubes4hifi
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    Post by tubes4hifi Sun Jan 16, 2022 7:23 pm

    here's an underside shot . . .

    new amp style for 2022 VTA70v22under
    ttocs
    ttocs


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    Post by ttocs Sun Jan 16, 2022 7:45 pm

    The wiring layout looks nice and straightforward. Very nice!
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    98indypacer


    Posts : 6
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    Post by 98indypacer Sun Jan 16, 2022 9:05 pm

    Love the size and layout. Would look nice if the top panel was brushed or had some finish other than what it looks like in the picture. Is this the production finish?
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    simpleton


    Posts : 1
    Join date : 2022-01-18

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    Post by simpleton Tue Jan 18, 2022 3:23 am

    With the new chassis layout, what does this do to adding the triode/pentode switches?
    ttownscott
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    Location : Tacoma, WA

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    Post by ttownscott Tue Jan 18, 2022 8:18 pm

    I'm liking this. I haven't built a VTA120. This might be the platform.
    corndog71
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    Post by corndog71 Tue Jan 18, 2022 10:34 pm

    On the bottom view it looks like there’s a quad-cap or bi-cap.

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