Hello Seth and the others,
In the eighties i did build a French design for a moving coil cartridge amplifier. Power consumption was less than 10 milliampere. There was a commercial version available using an ordinary battery. But for diy folks they also did describe a state of the art version with bigger lead sealed batteries. First using 1AH and then 8 AH. Mine also used to 8Ah or even more .
Their philosophy was that if you need to amplifly very small signals you need to power supply to be extremely stable. They also did make power and pre amplifiers using batteries. They did make some very special devices.
I am sure the sensation will work with 5Ah but batteries aren't that expensive so i will buy bigger ones. I also will buy a ctek charger because using a good charger will keep your batteries in better condition.
Also did read that there are different types of lead sealed batteries for different purposes. Some just buy a general purpose one( the cheaper the better) But there are ones specially developed for standby use( like in a ups) and one for cyclic use ( like in a golf car). I think one designed for cyclic use would be better in an amplifier.
Comparing 3 batteries with the same AH rating: One designed for floating and cycled use and the other designed for cycled use in particular. The same manufacturer, just different series. max discharge current during one minute: general purpose 48A general purpose long life 150A cycled use( also has a longer life) 240A
At a big online electronic company, the 48A is the most expensive and the 2 others just have a difference of 2 $
I guess quality still has a price tag.http://img411.imageshack.us/img411/5262/h2ultimatetestimplantat.jpg
This is the pre pre built by someone much later after it had been introduced. Try to find the actual circuit LOL
One could copy this post to the dodd battery replacement project as well.
Kind greetings, Edward