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Although I have been enjoying my PhonoClone3 build immensely [had it build - no real DIY talent here anyway], the tinkering bug won't leave me be.

Since talking with the designer of the PhonoClone3, there doesn't seem to be any possibility for opamp rolling because of oscillation issues [the build uses OP27], I was wondering if the DIY minds here can help me figure out whether I can replace the OP27 with Audio-GD discrete OPA.

The build uses 2 OP27 per channel for the audio section, and 2 OP27 per channel for the regulator [XReg].

Here is the design:

PhonoClone 3

Many thanks for any insight.