Originally Posted by
walpurgis
I bought a new F307 from Lasky about 1971. It hummed like mad and had to be returned. The replacement was noisy too, so that also went back and I took a Rotel RA-611 instead. I liked that amp a lot, it was very good. Funny thing is, a few secondhand F307's have since come my way and they've been fine.
Early ones were dodgy in the output transistor area and there was I believe (hopefully Mick will know more) a factory recall to fit more robust output devices and whilst there change a few parts associated with bias regulation.
Arkless Electronics-Engineered to be better. Tel. 01670 530674 (after 1pm)
Modded Thorens TD150, Audio Technica AT-1005 MkII, Technics EPC-300MC, Arkless Hybrid MC phono stage, Arkless passive pre, Arkless 50WPC Class A SS power amp, (or) Arkless modded Leak Stereo 20, Modded Kef Reference 105/3's
ReVox PR99, Studer B62, Ferrograph Series 7, Tandberg TCD440, Hitachi FT-5500MkI, also FT-5500MkII
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