The Giannini Axcess Phaser PH 105 is an analog phaser pedal from Brazilian maker Giannini. RockBoard's PedalPedia describes it as a pedal effect that provides a vintage phaser sound reminiscent of the 1970s, and it is designed to simulate the effect of a rotating speaker, covering a range of phaser sounds from subtle modulation to a funky, retro vibe1.
What it does
A phaser splits your guitar signal and shifts the phase of part of it, then mixes the two back together, producing the sweeping, whooshing movement players associate with 1970s rock and funk. The PH 105 is built around that vintage character: rather than aiming for modern, extreme modulation, Giannini positions it as a way to get the classic rotating-speaker style sweep, from a gentle, slow-moving shimmer under clean chords to the pronounced, funky sweep that sits well with overdriven rhythm parts1.
If you are new to modulation effects, a phaser sits alongside the flanger and chorus in the family of pedals that move your signal in time with themselves. The phaser's character comes from notches swept through the frequency range, which is what gives it the hollow, swirling quality the PH 105 is designed to reproduce1.
Power
The PH 105 runs on a 9V DC supply with center negative polarity and draws 100mA1.
At 100mA, the PH 105 draws more current than many analog pedals, so check the output rating of your power supply or daisy chain before adding it to a board.
Videos
Filipe Cruz Mendes
Musical Street
PedalPoint
Sources (1)
- Axcess Phaser PH 105 by Giannini, RockBoard PedalPedia, 2026