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    Have PH15 Phono - need preamp



    Posts : 26
    Join date : 2012-04-15
    Age : 60
    Location : Shrewsbury England

    Have PH15 Phono - need preamp

    Post by Avinunca on Sun Sep 30, 2012 12:43 pm

    Greetings from Sunny England (I wish)!

    I am hankering after a ST-70 valve power amp and want to build one of Bob's kits.
    I will need some sort of preamp as I use phono and one other source (Squeezebox).
    Could I fit one of Roy's line amp pcbs into my 12" by 12" PH15 chassis and power it from the psu without compromising the
    phono stage sound quality?
    Alternatively could I install a passive preamp? I don't want tone controls, just a volume control and source selector.
    Any thoughts on this?

    Posts : 1463
    Join date : 2008-11-30

    Re: Have PH15 Phono - need preamp

    Post by tubes4hifi on Thu Oct 04, 2012 11:09 am

    Best way to do it is get something like my SP6 preamp which is the same size chassis as the PH15,
    it has the Zmod line amp and power supply. I now have this on a single small board,
    but you'd probably want to power it separately from the PH15.
    You'll need a selector switch and volume control anyway, so you can always try passive and add the line amp if passive doesn't work well.

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