Moderator: Mods
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, or a gadget 
?
Dunno. First time I've seen it. Interesting idea. It would seem to work like a Bias-Rite, but actually control voltage to the tubes rather than just report it.Dad3353 wrote:Is it worthwhile
?
I guess it does have some other benefits. I wonder what it's failure modes are (everything electronic fails eventually), hopefully not "tube meltdown."If it works as per the 'blurb', it shouldn't 'tonally' affect the amp, except for ensuring the closest bias possible, so perhaps less subtle harmonics, more 'hifi-like' (that's what I'd want for bass...), but the bias 'imbalance' can be adjusted, it seems, so that could be good for Townsend-like guitar..?OldSchoolDave wrote:Does it work transparently, without effecting tone?
There should be room in a DR203; combos could be limited..? The race would be on for shorter tubes..!Is there enough clearance inside the amp cab for the additional socket height (some are pretty tight already)?
In my very domestic setup,this shouldn't be a problem; I suppose a more solid fixation, such as screwing to the inside top, wouldn't destroy the vintage value too much, if done cleanly. For 'pro' use, I don't imagine there's that many collector amps out there as rented backline.Will the thing stay put in transit, in a velcro'd semi-permanent installation?
It could be the opposite; apparently the valve heat output is lessened, and the total head heat output could be reduced, even with some dissipation from the unit (at least that's what I understood...)How much heat does it put off and would that be detrimental to the amp?
If it's controlling the valves completely, I assumed that it could increase as well as decrease the bias, as long as the result was not out of tolerance (such as a duff valve...)Can it boost as well as cut?
Why not, indeed? Still no idea on price, but sooner or later I would be looking for a quad of KT88's; acquiring singletons and using this unit for bias optimisation could recover the cost of the unit, seeing the price of matched quads (or pairs of pairs...). I've not had the amp long, and it's not 'hammered' daily, so I'm not needing to swap out right now, but that's when to start preparing, isn't it? My bassman is closer to revision time, but then we're back to 'headroom' problems (physically...). As to the Mesa, it has an octal tube set, and space is more than tight in the 'rack' head.Why don't you buy one and let us know the answers
Good afternoon, Mark...mhuss wrote:That seems a big, clunky module just to avoid biasing your tubes...And more complication always means more things to break...
