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digiZoid ZO 2 (ZO2) Portable Headphone Amplifier

Headphone Amplifier, Personal Subwoofer Audio Enhancement Accessory (Z02)


We apologize

This item has been discontinued

More Bass

A bass boost has limited ability to increase the intensity of low frequencies, and does so by only a small amount. The ZO2 significantly increases the intensity of low frequencies, making them over 4x louder. In the audio world, that's a big number especially when it requires almost 100x the acoustic power output to achieve.

Deeper Bass

Not all speakers - especially those in headphones and earphones - aren capable of reproducing bass efficiently. Due to their small size, physical limitations prevent how much and how well they can reproduce low frequency sound - until now. ZO2 does what experts claim couldn't be done. By precisely controlling power delivery, ZO increases the efficiency of speakers by extending their response to lower frequencies.

Controlled Bass

When bass boost is on, more power is required to reproduce the low frequencies. But since your player's output is limited, it gets that extra power by redirecting it from the mid- and high-range frequencies. So to get slightly more bass, you sacrifice the quality of everything else. But ZO2 has the raw power to not only give you unparalleled levels of bass, but to reproduce the low frequencies without sacrificing the mids or highs.

Customized Bass

With the 32 built-in Sound Signature Tuning (SST) profiles, you can perfectly tweak ZO's sound characteristics to achieve the ultimate entertainment experience. At the heart of ZO is the LightBar display, which colorfully expresses the selected SST profile.

Real Bass

Most bass boosts and bass enhancement technologies exploit a psychoacoustic effect known as the missing fundamental to create the illusion of bass. But ZO's bass is 100% analog (i.e., the real deal), as we believe there can never be a true substitute for the real thing.

More Than Bass

During the recording process, a high-quality media file is created (represented in the circle as 100% of original). As this media moves through subsequent stages, a spiraling plunge in sound quality occurs. By the time audio reaches the end listener, more than 90% of the original sound fidelity is lost, resulting in flat, lifeless sound, listener fatigue, and even potential hearing damage.

General Features:

  • 32 built-in Sound Signature Tuning (SST) profiles
  • Tweak ZO's sound characteristics to achieve the ultimate entertainment experience
  • LightBar display colorfully expresses the selected SST profile
  • Green profile for more volume and dynamic range
  • Red profile for the soul-shaking impact of a home theater system while on the go
  • Functions are easily accessed through a single thumbwheel switch
  • Compatible with headphones, earphones, or speaker systems with a 3.5mm stereo plug
  • Ideal for headphones/earbuds with impedence around 16-100 ohms
  • Connects to smartphone, tablet, music player, computer and gaming console
  • Works with car stereo system and A/V receivers
  • Compact form fits snugly in your fingers
  • Memory feature recalls the last settings you used so can pick up listening where you left off
  • Soft-touch coating will feel good to your fingers
  • Made from high-impact resistant Polycarbonate
  • Primary Color: Black
  • Manufacturer Part Number: DZDZO2 (DZDZ02)
  • Also Found As: DigiZoid ZO2,DigiZoid Z0 2,DigiZoid Z02
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
Z02 should not be paired with headphones with Noise Cancelling. The technology in the zo2 actually contradicts the noise cancelling technology

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating





Great Device a must have

September 29, 2013

The digizoid Zo 2 is a must have for improving the quality of your music. I have had this product for some time now and i do say it's worth getting. Where it lacks in features it will make up in the way your music sounds. the only two complaints I have about this product is the battery life (6 hrs) and that there is only one switch on the side one is really needed but another would have been nice. I as well have to say this device performed best on my apple Ipod and didn't seem to work as well on my Droid razrm

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San Jose, CA


Really performs

February 7, 2013

I bought this 3 months ago for my earbuds that just werent getting enough juice from my Galaxy. I was very skeptical at first, with all the different amps I saw available. I use to have a very small amp I bought for about ***, but after I went through two of those I decided I didnt want to work with that brand anymore. My main goal was to try and get clear, deep bass, but not ruin my highs and mids. I am happier than I thought I would be. My AKG earbuds now sound better than any other headphone I have heard. and ive heard 2 and **** buds too!

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Product Summary


Model Number

zo 2





Internal SKU


Internal Product ID


Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: digiZoid ZO 2 (ZO2) Portable Headphone Amplifier

  • digiZoid ZO2 Portable Headphone Amplifier
  • digiZoid ZO 2 Portable Headphone Amplifier