Source Audio ZIO Analog Front End + Boost Pedal


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The goal in creating the ZIO Analog Front End + Boost was simple yet ambitious: “Make Everything Sound Better!” ZIO is an all-analog preamp/boost pedal from Source Audio that includes a choice of four distinct preamp circuits, each with up to 20dB of additional output boost. ZIO is Source Audio’s first all-analog effects pedal and designed in collaboration with Christopher Venter, the owner and sole engineer at SHOE Pedals.

The word "ZIO" is an acronym for Impedance (“Z” is the electrical symbol for impedance), Input (“I”), and Output (“O”). The pedal is designed to take a guitar’s high impedance signal, sweeten the tone with any of its four preamp circuits, and output a strong, low impedance signal that won’t be altered by the buffered dry tones of effect pedals further down the signal chain. High fidelity, noise-free Burr-Brown op amps help give ZIO extreme clarity and responsive pick dynamics, while maintaining ideal body and warmth. ZIO has four distinct preamp circuits. JFET offers a completely transparent signal boost with zero coloring or distortion. LOW-CUT reduces “tubby” bottom-end for a tighter sound with added headroom. STUDIO finds inspiration from the time-honored “Pultec Trick,” a studio technique that adds clarity by cutting the “mud frequencies” and adding mid-range articulation. E-PLEX captures the focused and subtle grit of the preamps found in vintage Echoplex Tape Delay units. The ZIO’s TONE toggle offers three different levels of capacitance (or simulated cable length) to brighten or darken the tone.

The ZIO’s simple control set makes it easy to find the perfect “base tone” for any guitar and ensures that the dry signal hitting each pedal and the amplifier remains strong and consistent.

  • Circuit knob with four distinct preamp circuits: JFET (transparent, flat frequency curve), LOW-CUT (cuts lows without affecting mid to high frequencies), STUDIO (replicates “Pultec Trick” equalization), E-PLEX (inspired by the preamp in an vintage Echoplex Tape Delay unit)
  • High quality components and Burr Brown JFET op-amps
  • Output control with up to +20dB of signal boost
  • 3-way Tone toggle switch with bright/medium/dark cable capacitance voicing
  • 2-way Footswitch Action toggle switch (with always-on “Mute” option)
  • Extra Tuner/Line Output
  • True Bypass
  • Input Impedance: 1 Mega Ohm (1 MΩ)
  • Output Impedance: 150 Ohm (150 Ω)
  • Power Consumption: 9V DC center negative @ 20mA
  • Brushed anodized aluminum housing
  • Dimensions: L: 4.1 in./10.5cm x W: 2.36 in./6cm x H: 2.22 in./5.65cm (including knobs)
More Information
Manufacturer Source Audio
Condition New
Effects Boost
Patches / Programs four distinct preamp circuits: JFET (transparent, flat frequency curve)
Audio Inputs 1/4" Instrument In
Audio Outputs 2 x 1/4" Out
Pedal Switches 1
On-Board Expression Pedal No
Power Adaptor 9V DC center negative @ 20mA
Width 4.1"
Depth 2.36"
Height 2.22"
Unique Features 3-way Tone toggle switch
2-way Footswitch Action toggle switch

Source Audio Limited Transferrable Warranty

Source Audio, LLC (hereinafter 'Source Audio') warrants that your new Source Audio One Series Collider Delay+Reverb, when purchased at an authorized Source Audio dealer in the United States of America, shall be free from defects in materials and workmanship under normal use for a period of two (2) years from the date of purchase by the original purchaser.

Under this Limited Warranty, Source Audio's sole obligation and the purchaser's sole remedy shall be repair, replacement, or upgrade, at Source Audio's sole discretion, of any product that, if properly used and maintained, proves to be defective upon inspection by Source Audio. Source Audio reserves the right to update any unit returned for repair and to change or improve the design of the product at any time without notice. Source Audio reserves the right to use reconditioned parts and assemblies as warranty replacements for authorized repairs. Any product repaired, replaced, or upgraded pursuant to this Limited Warranty will be warranted for the remainder of the original warranty period.

This Limited Warranty is extended to the original retail purchaser. This Limited Warranty can be transferred to anyone who may subsequently purchase this product provided that such transfer is made within the applicable warranty period and Source Audio is provided with all of the following information: (i) all warranty registration information (as set forth on the registration card) for the new owner, (ii) proof of the transfer, within thirty (30) days of the transfer, and (iii) a photocopy of the original sales receipt. Warranty coverage shall be determined by Source Audio in its sole discretion. This is your sole warranty. Source Audio does not authorize any third party, including any dealer or sales representatives, to assume any liability on behalf of Source Audio or to make any warranty on behalf of Source Audio.

Source Audio may, at its option, require proof of the original purchase date in the form of a dated copy of the original authorized dealer's invoice or sales receipt. Service and repairs of Source Audio products are to be performed only at the Source Audio factory or a Source Audio authorized service center. Prior to service or repair under this Limited Warranty, the purchaser must request from Source Audio a return authorization.


You may have seen the images of ships stacking up on the west coast, waiting for their turn to port. This combined with the increased demand for domestic shipping of products from all industries across our nation has resulted in a rapidly fluctuating climate for receiving and shipping products. While we do our best to offer accurate shipping estimates, please remember that complications can arise which may be beyond our control. Know that Kraft Music is here to assist in any way that we can.

  • Ground shipping is FREE for all orders $99 and up.
  • Our central, midwest location ensures fast delivery times.
  • See below for transit day estimates. Please note, these are estimates and are not guaranteed.

Though forcasting shipping times has become increasingly difficult, general FedEx package estimated transit days are as follows:

  • Upper Midwest: 1-3 days
  • Central US, South East US, and East Coast: 2-4 days
  • West Central US: 3-5 days
  • West Coast: 4-6 days
  • Alaska & Hawaii: 7+ days
All transit times are based in business days. Please allow 7-10 business days for most freight shipments. Business days are Monday through Friday and do not include public holidays and weekends (Saturday/Sunday.) For questions regarding estimates to your specific location, please contact us at [email protected] or 800-783-3368.