I'm rebuilding a Sansui AU-5500, I came across an IC, BA312 manufactured by Rohm. It's a Dual preamplifier from the 1970s, it has 7 pins inline so I'm wondering if anyone knows of a modern drop-in replacement with better specs or just sounds better? Its the pre-amp for the phono section by the looks of the schematic, I started looking for a suitable replacement then thought I would ask you guys who are much more experienced than me!
That is exactly what I was looking for! Thankyou Jon it's much appreciated.It is a single amplifier with three transistors. Totally obsolete now but I stumbled upon this; Vintage-Audio-Upsparkoslabs.com/vintage-audio-upgrades/grades - Sparkos Labs Inc.
May be worth a look but I wouldn't bother unless you have a good imagination for any improvements.
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