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Need speakers that can rock with just one watt? You found da place.

RE: How will efficient speakers/amp on batteries compare?

I found that the original T-amp was not very good, even when used with batteries. I later stepped up to a Charlize (DIYParadise), which was a fairly optimized design IMO, and used it with a 12V SLA. Not very good. I would try again with the newest units from Hypex, when they are available. My Gainclone experiments were consistently better than the Class-D stuff.

My very simple 2A3 SET beats them all IMO, if you can live with the power output -- an amp like this is best at 103db+, and even better at 107db+. Even better is my fully battery powered (B+ and heaters) 10Y-45 SET, when used on compression drivers.

I've used battery power supplies for triodes for about ten years now. It is not that big a deal. Just find surplus 1.5-2.5Ah batteries on eBay for $5 or less each. Put them in strings of four batteries to produce 50V. Charge in parallel on a fixed 55.2V supply. My present 400V supply (eight stacks of four batteries each) fits in a box about 24"x14"x8" and weighs about 100lbs. I would bypass the batteries with a cap of some sort. Batteries are not designed to pass AC.

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