Pedals that stack with the Roger Mayer Axis 27

JHS Tidewater Tremolo

Put JHS Tidewater Tremolo after Roger Mayer Axis 27 in the signal chain, clear of Roger Mayer Axis 27's own gain stage

Caroline Guitar Company Icarus

Run Caroline Guitar Company Icarus after it and the bright edge settles into something more warm

MXR Micro Amp

Run fuzzy into MXR Micro Amp for more clean boost on top

Ashdown Velvet Compressor

What Ashdown Velvet Compressor brings here leans toward compressed — that's worth building a pairing around

Electro-Harmonix Memory Boy Analog Delay

Put Electro-Harmonix Memory Boy Analog Delay after Roger Mayer Axis 27 in the signal chain, clear of Roger Mayer Axis 27's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Eventide Modulated Delay

Eventide Modulated Delay's modulated voice goes after Roger Mayer Axis 27 in the signal chain — it's not there to compete with Roger Mayer Axis 27's own fuzzy character — goes in the amp's FX loop (or last, into a clean amp)