Originally Posted by Krazyjohnny
Does this lessen how bad the tuner sounds? My BT and CD sound great. The radio on the other hand sounds terrible.
Not really. It eliminates one layer of arguably sub-optimal EQ (or two with loudness), which may help a little, but the crazy loss of lows and highs relative to other inputs is still there.
If I'm reading it correctly, the service manual says it uses -6 dB at 70 Hz, and -17 dB at 7 KHz. FM music stations generally have heavy EQ, but this goes far beyond flattening them out a bit. It must be optimized for talk radio, though even that sounds rather dry to me.
I hate listening to music on FM anyway, so it's not a big deal for me. Still, when I get one of these on the bench, I will see if there's a way to bypass it in hardware. There are two ICs capable of EQ, one of which could be bypassed, but I don't know yet which gets used for what. This would probably be more than most people would want to take on, though.