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FERNSEH · 30th Jan 2010, 9:18 pm

In the late 1950s Philips made a PA amplifier that employed EL81s. I've got one upstairs. I can't remember if two or four EL81s were employed.
I can check that out on Monday.
The P/EL81 was originally designed as a line output valve.

DFWB.

30th Jan 2010, 9:18 pm	#16
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: EL or PL509 as an audio output valve. In the late 1950s Philips made a PA amplifier that employed EL81s. I've got one upstairs. I can't remember if two or four EL81s were employed. I can check that out on Monday. The P/EL81 was originally designed as a line output valve. DFWB.