Here is a short comparison of the phaser pedals I have tried using with bass. Pedals are sorted by my subjective preference.
|Aguilar Grape Phaser||🟢 Unity gain||🟢 OK||🟡 Tall||🟢 Rate, color|
|Fender Lost Highway||🟢 Adjustable||🟡 Trebly||🟡 Big||🟢 High variety|
|MXR Script Phase 90||🟡 Slight boost||🟢 OK||🟢 Medium||🔴 Too subtle|
|MXR Phase 95||🔴 Boost||🟢 OK||🟢 Small||🟢 4 modes, speed|
|MXR Phase 100||🟢 Unity gain||🔴 Bass loss||🟡 Wide||🟢 4 modes, speed|
|MXR Block Phase 90||🔴 Boost||🟡 Boomy||🟢 Medium||🟡 1 mode, speed|
Ironically; I like the sound of MXR90 the best – especially after the R28 mod. However, the volume boost and boomy response make it the least usable for me. I wish MXR made a bass-oriented Phase 90.