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Old 6th January 2017, 03:20 PM
John Caswell John Caswell is offline
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Join Date: Dec 2005
Location: Wokingham, Berkshire
Posts: 1,593
Default Re: Upgrade ideas for 300B PP

Hi Lyndon,
I have use battery bias in my PhonoIIi/III for years now and find it excellent! You may still be able to buy "tagged" NiCad" batteries, they don't have to be large either "AAA" or "AA" will do, if you cannot get them then "C' cells will be fine just larger. Do not be tempted to buy the standard cells and fit them in holders - I have found since the de leading (Pb) of a lot of things contacts tend to corrode much quicker and noisy contacts result.

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