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Metal guitar pedal with three control knobs and footswitch

Monoprice Inc.

Monoprice Inc. 600033 AD-4 True Bypass Analog Delay Guitar Pedal

SKU CH-6RKS-88JMW MPN 600033

Vintage-style analog delay pedal with up to 350 ms delay time, true bypass switching and all-metal construction, powered by 9 V battery or adapter

  • Product typeEffects Pedals - Multi-Effects
  • Product weight0.6
  • True bypass preserves your original tone when the effect is off
  • Up to 350ms delay time covers most common echo needs
  • All-metal full-size chassis withstands stage use
  • High-impact switches deliver reliable stomp action
  • Powered by 9V battery or external adapter for flexible setup

True Bypass Analog Delay Pedal

The Monoprice 600033 AD-4 is a true bypass analog delay pedal built for guitarists who want vintage-style echo with modern reliability. It reproduces the warm, dark repeats associated with 70s and 80s stompboxes while extending the maximum delay time to 350ms. The circuit remains fully analog throughout the signal path.

Fits Standard Pedalboard Power

The full-size metal enclosure houses high-impact switches designed for stage use. It draws power from a single 9V battery or an external 9V adapter, letting you choose the most convenient source for your board. True bypass switching removes the circuit entirely from your signal chain when the effect is disengaged.

For Players Seeking Warm Analog Repeats

This pedal suits musicians who prefer the organic decay of analog delay over pristine digital copies. It is not for players who need tap tempo, preset storage, or delay times beyond 350ms. Builders wanting stereo outputs or modulation controls should look at multi-function delay units instead.

How it compares

Measured against everything we stock in Guitar Effects Pedals & Stompboxes, at today’s prices. Recalculated every night.

Price $23.99
Cheaper than about 79% of the 151 comparable items (median $76.99).

Specifications

Product
Brand nameMonoprice
Model name600033
Part number600033
Product typeEffects Pedals - Multi-Effects

Questions about this item

How long can the delay time be set before the repeats start to degrade?

The pedal provides up to 350 ms of delay time, which is slightly more than most original analog delay units.

Does the all-metal enclosure and true-bypass switching add noticeable noise or heat when the pedal stays on for a full rehearsal?

True bypass removes the circuit from the signal chain when off, and the analog design runs cool with no digital clock noise during extended use.

What power source do I need to have on hand before this pedal will work?

It runs on a standard 9 V battery or an external 9 V centre-negative power adapter.

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