That 33uF cap is the negative feedback dc blocking cap.
A non-polarised electrolytic like the Nichicon Muse (as mentioned earlier) is good. Film are better but usually huge and you don’t want it to act like an antenna for noise at this sensitive point in the circuit.
A non-polarised electrolytic like the Nichicon Muse (as mentioned earlier) is good. Film are better but usually huge and you don’t want it to act like an antenna for noise at this sensitive point in the circuit.
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Yes, these caps are worth replacing. Certainly not with BPs and God forbid, not with films. Depending on your taste, Nichicon FG, Panasonic FM, Silmic are all valid, good sounding options, which will to some extend improve the sound. Worth replacing any single coupling cap as well and the 33uf nfb decouplers in the riaa. If money allows, go for the main filtering caps too.
At the end the bottleneck will be the basic topology, the old and difficult to clean switches and the lousy original termination. This is the reason the only amps from that era worth spending time on are the ones from the top of the range. But if you love it, especially if it reminds you of a nicer, younger age, by all means do it 🙂
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