Pricing and availability

We compare 600+ stores and found this item at 8 stores. Prices updated .

Sweetwater
4.0 (1)
$509.00
Amazon
5.0 (1)
$509.00
Reverb
5.0 (1)
$429.07 New
$467.18 Used
Musician's Friend
4.0 (1)
$509.00
Thomann
4.2 (17)
$444.00
Gear4Music
£399.00

Average Price: $486

Standard/Professional

$150

$601+

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Price History

Based on price data from 5 merchants for "Erica Synths Acidbox 3". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Unleash a world of sonic textures with the Erica Synths Acidbox 3, a versatile multi-effects pedal that brings the legendary Polivoks VCF to your setup. This robust tabletop unit is designed to infuse your guitar or synth sounds with an authentic Soviet-era edge, offering both lowpass and bandpass filter modes. Whether you're looking to add subtle warmth or dive into deep, gritty overtones, the Acidbox 3 delivers with its intuitive interface and powerful sound-shaping capabilities.

At the heart of the Acidbox 3 lies an engaging LFO section, boasting eight selectable waveforms that allow for intricate modulation possibilities. The envelope follower and modulation controls provide dynamic interaction with your playing, making it a favorite among experimental musicians and sound designers. Stereo inputs and outputs ensure the pedal integrates seamlessly into any setup, whether in the studio or live on stage. With its rugged build and distinctive character, the Acidbox 3 is not just a tool, but an instrument in its own right.

Key Features:

  • Polivoks-style VCF in a tabletop unit
  • Switchable lowpass/bandpass resonant filter
  • Fully-featured LFO with eight waveshapes and tap tempo
  • Envelope follower with rate and depth controls
  • Configurable control input for bypass or expression pedal use
  • Adjustable input gain for instrument and line-level sources
  • Stereo inputs and outputs for versatile connectivity

Owner's manual

Erica Synths Acidbox 3 User Manual

Product specs

Available since January 2018
Bass Pedal No
Breath Controller No
MIDI Controller No
Filter Yes
Effects No
Sequencer No
Product Specific Expansion No

FAQs

What type of filter does the Erica Synths Acidbox 3 use?

The Erica Synths Acidbox 3 features a Polivoks-inspired filter, known for its aggressive and distinctive sound, ideal for creating rich, resonant tones.

Is the Erica Synths Acidbox 3 suitable for guitarists?

Yes, the Acidbox 3 is designed for use with various instruments, including guitars, offering unique filter effects that can enhance your sound.

Does the Erica Synths Acidbox 3 require a specific power supply?

The Acidbox 3 requires a 12V DC power supply, which is typically included with the unit, ensuring it operates correctly and safely.

Can the Erica Synths Acidbox 3 be used with other effects pedals?

Yes, the Acidbox 3 can be integrated into a pedalboard with other effects, allowing for creative sound manipulation and complex signal chains.

How does the Erica Synths Acidbox 3 differ from a typical multi-effects pedal?

Unlike typical multi-effects pedals, the Acidbox 3 focuses on delivering high-quality analog filter effects rather than a wide range of digital effects.

Telekom Electronic Beats TV

Telekom Electronic Beats TV

Stimming reviews Erica Synths' Acidbox III (Electronic Beats TV)

Video thumbnail for Stimming reviews Erica Synths' Acidbox III (Electronic Beats TV) by Telekom Electronic Beats TV

Stimming reviews Erica Synths' Acidbox III (Electronic Beats TV)

Telekom Electronic Beats TV

Telekom Electronic Beats TV

Video thumbnail for Erica Synths Acidbox III Stereo Polivoks Filter by Perfect Circuit

Erica Synths Acidbox III Stereo Polivoks Filter

Perfect Circuit

Perfect Circuit

Video thumbnail for All My Synths Thru The Acidbox III by Erica Synths | Synthesizer Show & Tell by Learson Peak

All My Synths Thru The Acidbox III by Erica Synths | Synthesizer Show & Tell

Learson Peak

Learson Peak

Video thumbnail for Erica Synths ACIDBOX III - Filtering (and Squashing) A Loop by ANR

Erica Synths ACIDBOX III - Filtering (and Squashing) A Loop

ANR

ANR

Video thumbnail for That One Filter You Didn't Know You Needed: Erica Synths Acidbox III by Analog Kitchen

That One Filter You Didn't Know You Needed: Erica Synths Acidbox III

Analog Kitchen

Analog Kitchen

Video thumbnail for Another Reason Why The Acidbox III Is Awesome by Learson Peak

Another Reason Why The Acidbox III Is Awesome

Learson Peak

Learson Peak

Reviews

PROS

  • Sounds great on synths and drums with high LFO rate

  • Rock solid build, all metal exterior

  • Wide variety of sounds and creative tweaking options

  • Stereo input/output enhances connectivity

  • External control input for CV/foot pedal versatility

  • Large, comfortable Cutoff knob for easy adjustments

  • Offers both lowpass and bandpass filters

  • Envelope follower allows for creative sound manipulation

  • Can produce a range from subtle effects to full acid madness

  • Maintains original sound quality when fully opened

CONS

  • High price point compared to similar units

  • Lack of MIDI input for LFO rate control

  • Gain adjustment affects only mono/left channel

  • Some users report issues with balance in stereo mode

  • Bypass and low pass/bandpass switches feel flimsy

  • LFO could benefit from more extreme speed options

  • Reports of excessive noise in some units

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Erica Synths Acidbox 3.

Features and functionality

  • The input gain knob only affects the left channel, which is inconvenient for a stereo device.

    Source
  • It lacks an output control and true bypass, which can affect signal clarity and flexibility.

    Source
  • The Acidbox III syncs only via CV, with no MIDI support, limiting some integration options.

    Source
  • The Acidbox 3 offers stereo in/out with mono capability, a switchable LP/BP filter, an LFO with multiple waveforms, and an envelope follower.

    Source
  • In bypass mode, the In Level knob remains active, affecting the signal even when other effects are bypassed.

    Source
  • The Acidbox III's filter effect is more noticeable than the Vermona Action Filter or Zen Delay, which may not suit all mixing preferences.

    Source

Comparisons

  • While not making sounds truly "acid," owners find it sounds better than the Elektron Analog Heat despite having fewer features.

    Source
  • The Acidbox III's filter is more aggressive than the Zen Delay, with a saturated, distorted Polivoks sound, but it lacks a high-pass filter.

    Source

Use cases and applications

  • It excels at imparting an analog feel to software sounds, enhancing their warmth and character.

    Source
  • The Acidbox 3 is praised for its ability to creatively transform live sets, adding depth and dynamics reminiscent of iconic tracks like Eric Prydz' "Call On Me".

    Source
  • Best suited for processing percussions or acapellas rather than full tracks in a DJ setup, due to its pronounced audio change upon engagement.

    Source

User experience

  • Turning the large cutoff knob provides a tactile and satisfying experience, enhancing the hands-on interaction with the pedal.

    Source

Value and pricing

  • Despite its cost comparable to a synth, users appreciate the unique filtering capabilities it offers.

    Source

Critic Reviews

Erica Synths Acidbox III review | MusicRadar

musicradar.com

Erica Synths Acidbox III is a gritty, characterful analog filter with a stereo signal path that adds width to mono sources. It's celebrated for its rich input overdrive and flexible modulation options. However, it lacks MIDI sync and output level control, which requires cautious use with speakers. Despite a higher price than its predecessor, its unique sound-shaping capabilities make it a worthy investment for producers in techno, lo-fi, and experimental genres.

positive

Erica Synths acidbox III Review - New Colour for Old Sounds

musictech.com

Erica Synths’ Acidbox III impresses with its gritty Polivoks filter, offering both low-pass and band-pass options that shine in live and studio settings. Its rugged build and stereo I/O make it a solid choice for DJs, while the envelope follower and LFO add versatility. However, the sweepable pots may feel imprecise for some users, and the control interface can be a bit fiddly. Despite these minor drawbacks, Acidbox III’s characterful sound and flexibility make it a valuable asset for those seeking distinctive analog charm.

positive

5.0 out of 5

Based on 0 Reviews and 2 Ratings

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Artist usage

Add artist
See how Anthony Marinelli uses Erica Synths Acidbox 3

Anthony Marinelli

Keyboardist, Composer

...
Verified via YouTube

At 13:14 in the video "My Synth Studio Revealed | Studio Tour 2025" by Anthony Marinelli Music on YouTube, an Erica Synths Acidbox 3 FX/filter unit is clearly visible on a pedalboard that houses pedals connected to the Oberheim OB-X synthesizer in Anthony Marinelli’s studio setup.

See how Tom Demac uses Erica Synths Acidbox 3

Tom Demac

...
Verified via Attack Magazine

In this artical with attack magazine, Tom mentions having a Erica Synths Acidbox as part of his collection.

See how Analog Kitchen uses Erica Synths Acidbox 3

Analog Kitchen

Music Producer, DJ

...
Verified via YouTube

In this YouTube video, Analog Kitchen showcases his latest setup for life performances. At 20:20 he states that the filter is connected to outputs 3&4 of the Akai MPC Live. And starting at 20:33 he clearly mentions the Acidbox 3 and states Erica Synths did an amazing job in recreating an old Russian Polivoks filter.

Genre Usage

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Used With

Based on how musicians on Equipboard use Erica Synths Acidbox 3, it is most commonly used with the following gear.

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