continuing design work on v2
The version 2 design of the McGrath Mini is advancing nicely at present. As mentioned before, 4x12AX7, with new switchable boost stage in the input section, two stages of gain on the fx return, and several other new features. Power amp stays same, single-ended EL84 (I'll probably also try the 6P14P), with no NFB. I will use the Bud AC-1407 chassis box (or Hammond equiv, 1444-84515). This causes final case dimensions to become 9.5"W x 10.5"H x 7.25"D. I.e., slightly taller and narrower than the almost-square version 1. I don't like the proportions as much; given in-house fab I'd go back to square (i.e., 10.5"W x 10.5"H). But that's OK, features are good, so here form follows function. Knobs (8) will be as in v1, though with some re-naming. There will be four switches on the upper back panel, between the input jack and fx send: voice, scoop, brt, ~cold. ("voice" is a 3-way DPDT.) These switches control those functions which are n...