The Delay Machine II is an analog delay pedal from PastFX, built around two MN3005 bucket brigade devices with an MN3101 clock driver in an all-analog circuit. PastFX describes it as "a dual MN3005 + MN3101 delay with Mods based on a classic circuit". It sits in the delay pedals family, with short and long delay modes, a tone control that rolls off high frequencies for darker repeats, and two analog expression control inputs1.
Controls and delay modes
The pedal offers two delay ranges and a tone shaping control1:
| Control | What it does |
|---|---|
| Short / Long mode | Approximately 25 to 410 ms delay time in short mode, 50 to 820 ms in long mode |
| Tone | Rolls off high frequencies to provide darker repeats |
The two modes also change the power draw: 40 mA in short mode and 80 mA in long mode1.
Power and bypass
The Delay Machine II runs on an 18V DC center negative supply and has no battery option. PastFX is explicit about the supply: "Please only use high quality 18VDC regulated power supply with Boss style Negative tip." Bypass is true bypass1.
The 18V requirement rules out most standard pedal supplies and daisy chains shared with lower-voltage pedals. There is no battery option, so a dedicated 18V regulated supply with a Boss style negative tip is required1.
Expression control
PastFX fits two analog expression control inputs, which the maker says work with a Moog EP3, a Dunlop DVP5, or an equivalent expression pedal1.
How it compares
The Delay Machine II is a dedicated analog delay. A digital alternative in the same lane is the Mooer Ocean Machine II, which MOOER Audio says offers nine distinct delay types, including digital, analog, tape, echo, liquid, rainbow, crystal, low-bit, and fuzzy, each supporting up to 2 seconds of delay time2. PastFX's own range also includes the PastFX Echo 600, a compact take on a different classic delay design.
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Questions
Does the PastFX Delay Machine II take a battery?
No. PastFX lists the Delay Machine II with no battery option available. It needs an external 18V DC center negative power supply, and the maker asks players to use only a high quality regulated supply with a Boss style negative tip. Current draw is 40 mA in short mode and 80 mA in long mode.
Is the PastFX Delay Machine II true bypass?
Yes. PastFX specifies true bypass operation on the Delay Machine II, so the pedal passes your guitar's signal straight through when it is switched off.
What delay times does the Delay Machine II offer?
PastFX gives approximately 25 to 410 ms of delay time in short mode and 50 to 820 ms in long mode. The two modes also differ in current draw, at 40 mA and 80 mA respectively.
What power supply does the Delay Machine II need?
An 18V DC center negative power supply. PastFX asks players to use only a high quality 18VDC regulated supply with a Boss style negative tip, and there is no battery option. Current draw is 40 mA in short mode and 80 mA in long mode.
Which expression pedals work with the Delay Machine II?
PastFX says the pedal has two analog expression controls that work with a Moog EP3 or Dunlop DVP5, or an equivalent expression pedal.
Sources (2)
- Delay Machine II, pastfx.com, 2026
- Ocean Machine II_MOOER Audio, MOOER Audio
