I have a hardware sequencer triggering a synth, using a small reliable mixer and a
Marantz PMD-720 cassette 8 Track.
The synth is a korg opsix with stereo outputs. I'm using instrument cables to connect inputs 1&2 into the marantz, recording to tape, and then feeding the phono output of the marantz into a mixer, which sends to my studio monitors.
Upon playback, the sound is fluttering in pitch/warbling etc. I'm using a sine wave init patch on the korg opsix so this is a pure tone and shouldn't be warbling.
Anyone have any idea what's happening?
I'm using a brand new tape and the marantz is in really good condition as far as I can discern, I'm wondering if it's a cabling issue