I've had the GX-100 for a few months to use for at home guitar/bass, pratice thru KRK monitors. Works great on guitar, but has not been easy to dial in the a bass patch I like. I really like my Tech 21 Geddy pedal for live etc.
I crated a patch that I really like now, here's the flow:
- Input level set at 18 for a P-bass (very important to get the level high just below clip)
- PEQ - use HP and LP filters and up the level about 7
- Bass X-Compressor - mild compression 2/1 - set levels and high tone up some
- Divider for dual signals - 1st - Amp "Natural Bass"
- with York 410 Ampeg bass IR (the 57 and 52 mics are great) - EQ after. 2nd - signal route is just the Bass X-OverDrive (sounds similar to a SansAmp - darkglass) with EQ after (the X overdrive is foot swith on/off not set to default On - the EQ is always on)
- Noise supressor
- Reverb - Hall - very low in the mix
It takes effort to dial it in (use your ears to EQ not the dial numbers) and it's the first all digital multi-effects that I've liked for bass. The York IRs are really good, the GX is a bit bass/low end heavy overall so an IRs that works on other effect units may be muddy on the GX (it's not a flaw IMO); so search IRs for ones that sound good to your ear. The "original IR" for the Natural Bass amp in the GX is good; but I think the York is better IMO. I ended up choosing the York Ampeg 410 52 mic OA (off axis) #2 (phase aligned) IR. The Ampeg 410 57 CE (center edge) was good too. I don't care for this cabinet in person or for a rig, but that doesn't matter, the IRs sound good.
It has stereo L/R 1/4" outs and 1/4" headphone out; I run into a stereo DI box to the monitors; the 1/4 outs are not ballanced but are quiet.