From JHS:

   
The Milkman is a collaborative idea between Josh Scott of JHS Pedals
and Tim Marcus of Milkman Sound. The concept is simple; a single pedal
that offers up an echo/slap delay and a boost that can be used as an
always-on enhancer or as an overdrive for small wattage amplifiers. Josh
designed the circuit in late 2016 and here we are, a small footprint,
easy to use boost/echo 2-in-1 that fits into any style players rig with
ease. Let's look at the controls.

The right side of the pedal is the boost side. This boost is a
discreet amplifier based circuit with tons of power and character.
Simply set it low at unity gain for an always-on enhancer that fattens
up and clarifies your tone, or turn more clockwise to push your tube
amplifier into sweet natural overdrive. The left side of the pedal is
the echo/slap delay circuit. This circuit is designed to emulate a
hybrid of tape echo and analog BBD delay, and cover the tonal grounds
between both.  The controls are simple and it sounds good in every
setting. The “Slap” knob is the amount of delay time.  As you turn the
knob up, you will get longer delay times.  Keep in mind, this pedal is
designed for shorter vintage slap-back delay times. The “Mix” knob is
the effect level.  Full counter clockwise is all dry and full clockwise
is full wet/effect. The “Repeat” knob controls how many echoes or
repeats you get. The minimum is one and maximum is around 4.5 repeats.
"Repeat" knob lets you fine tune how many delays you will get.  Lastly
is the “EQ” knob. This control only affects the repeat delay signal so
that you can perfectly adjust the brightness or darkness of your
echo. When fully counter clockwise the repeats are at their darkest much
like an old BBD analog delay. When fully clockwise the repeats are the
brightest they will be with more grit, this is much like a classic tape
delay machine.

The longest echo/delay time on the Milkman is about 240ms.

The footswitching is our typical 2 in 1 arrangement where either
effect can be used separately or together.  The foot switch on the left,
the switch will turn the delay on/off and the footswitch on the right
will turn the boost on/off.

The Milkman uses standard 9v DC Negative power only.