(unknown, U.K.) Rangemaster Fuzzbug (Any circuit / cosmetic / colour variant. NOT all were named or sold under the Rangemaster name...)

    Arbiter Fuzz Face (NKT 275 first variant)

      Hornby Skewes Zonk Machine II (Early cast bodied Sola built trial version)

        Hornby T.B. 2. Selectatone (Red or Black switch versions)

          Sola Sound Tone Bender MkIII (These are NOT strictly Mk3's but later MkIV / V, the mk3 came in the longer tapered cases though some of these silvers did have same circuit)

            Vox Highfield Treble Boost (This or the unbranded Highfield version)

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