['LIVEWIRE?']

AFAIK, the two channels are wired in phase, the volume level is cerainly more than adequate, whilst the sound quality is very good for a record player of this type. What I did was parallel the negative connection in the headshell, then bridge the positive ones under the deck by connecting a short length of wire between the Volume control and the stereo o/p socket. This is easily reversible if or when a suitable similar amplifier is obtained to use as the other channel, but this is highly unlikely. As a matter of interst, if the two channels of the pickup were wired in series, making sure the phasing was correct of course, would that produce a higher o/p. The source impedance would presumably be doubled, so in theory, so would the cartridges o/p voltage, though the higher Z might not be such agood match to that amplifier's i/p. Anyway whenever I've fitted a stereo cartridge in place of a mono one I've wired the two channels in parallel, which usually works well, so I'll leave it at that!