EMG BQC Control System

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$148.75 to $199.00

4.0 (1)

1 Review

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Page last updated Jun 29, 2026

Pricing and availability

We compare 600+ stores and found this item at 6 stores. Prices updated June 17, 2026.

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4.0 (12)

$194.90

$199.00

$148.75

$199.00

5.0 (2)

$199.00

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4.8 (44)

$160.00

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Price History

Based on price data from 5 merchants for "EMG BQC Control System". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Unleash the full potential of your bass guitar with the EMG BQC Control System. This robust preamp solution is designed for bassists who demand precision and flexibility in their tone. Featuring an active design tailored for EMG pickups, the BQC system offers a semi-parametric 3-band EQ, allowing you to shape your sound with surgical accuracy. The dual concentric control knobs provide separate adjustments for bass and treble, while the sweepable midrange lets you hone in on the perfect frequency between 100 Hz and 1 kHz to boost or cut.

Installation is a breeze, thanks to the solderless connection system and included wiring harness. With the EMG BQC, you have the power to transform your passive bass into a versatile tone machine, offering not just clarity and punch, but also the ability to adapt your sound to any musical context. Whether you're performing live or recording, this preamp ensures your bass lines cut through with authority.

Key Features:

Active balance, master volume, and 3-band EQ
Semi-parametric mids and highs via concentric/stacked potentiometers
Sweepable mid-frequency range from 100 Hz to 1 kHz
Center detent for a neutral setting
Includes solderless cables, potentiometers, battery clamp, and jack socket

Product specs

Type	3-band EQ with Blend, Wiring Harness Kit
Instrument	Bass
Active/Passive	Active (requires 9V battery)

FAQs

What does the EMG BQC Control System do for my bass guitar?: The EMG BQC Control System provides a 3-band EQ with blend control, allowing you to shape your bass guitar's tone with precision. It enhances your instrument's sound by offering separate controls for bass, mid, and treble frequencies.
Is the EMG BQC System compatible with passive pickups?: The EMG BQC System is designed for use with active pickups and requires a 9V battery to function. It may not be compatible with passive pickup systems without modification.
Does the EMG BQC System require soldering for installation?: The EMG BQC System features a solderless wiring harness, making it easier to install without the need for soldering. This simplifies the setup process, allowing you to quickly upgrade your bass guitar's electronics.
Can I use the EMG BQC System with any bass guitar?: The EMG BQC System is designed for bass guitars, but compatibility may vary depending on your instrument's cavity space and existing electronics. It's best to check the dimensions and requirements to ensure a proper fit.
How does the EMG BQC System affect my bass guitar's battery life?: The EMG BQC System, being an active preamp, requires a 9V battery. Battery life will depend on usage, but typically, a single 9V battery can last for several months of regular playing.

Videos

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EMGSoundSamples

How to install EMG BQC system for bass

EMGSoundSamples

EMG J5 and BQC system

samatza

EMG 40DC Pickups & EMG BQC System Bass preamp (review by G. Y.) (Slap Bass & Double Thumb)

Gökhan Yumuşakdemir

EMG BQC System 3 Band Bass Preamp: What’s In The Box (A Close-Up Look)

Fat Bass Tone

Mid test EMG BQC system

joe nugroho

Reviews

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PROS

Painless installation with solder-free connections for those with experience
Dramatically improved sound compared to passive pickups
Wide tonal variation and flexibility for diverse sound styles
Semi-parametric mid control allows for precise sound adjustments
Transparent sound that can suit various musical genres
Multiple treble boost/cut curves for tailored sound customization
Suitable for active pickup enthusiasts seeking sound variation

CONS

Tight fit in some bass control cavities can complicate installation
Concentric knobs can drag on each other if not properly installed
Plastic knobs feel cheap and are prone to sticking issues
Large circuit boards can be difficult to fit in smaller control panels

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about EMG BQC Control System.

Features and functionality

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The BQC system produces a very hot signal, often requiring an "active pad" on amps or DIs to prevent distortion.
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EMG BTC-HZ system features two dip switches that adjust the high-end frequency, impacting the tonal brightness significantly.
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The BQC system can be used with a 25k volume push/pull pot, suitable for setups involving push/pull volume, balance, mid/mid control, and bass/treble configurations.
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Mods and upgrades

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Wiring the BQC for two 9-volt batteries can provide more headroom, potentially resolving distortion issues.
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It is possible to use existing push/pull pots if they are compatible; soldering may be needed if they are not solderless.
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Setup and maintenance

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Correct wiring is crucial; reversing jumper wires is a common mistake that can affect performance.
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0 0

Half the pots in some setups may be solderless while others are not, requiring attention for compatibility with the BQC system.
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Software and compatibility

0 0

Ensure the correct balance pot is used; the B125 Active Balance Control is needed for passive pickups to avoid impedance mismatches.
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User experience

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The BQC system may overpower effects pedals, suggesting it's not ideal for users seeking subtle tonal control.
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Some users report discovering tonal differences due to dip switch settings in the BTC-HZ system, affecting perceived sound quality between identical bass guitars.
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4.0 out of 5

Based on 1 Review and 1 Rating

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1 star

boom762

12239

over 10 years ago

Solid, Powerful Preamp with boost and cut

4 Stars Boom? Why such a lowtarded star score for such a great piece of gear? I'll tell you. I'll tell you hard.

The EMG plastic knobs SUCK. They are so low quality, on par with the little "Homies" and "Mijos" toys you buy out front of a Wal-Mart vending machine for 25 cents. They have plastic molding, sharp as hell, hanging off of the sides. The knobs are light weight and feel horrible.

The actual chips and arrangement of the system are REALLY awkward and long. One of the circuit boards is 3 inches long. You won't be able to fit that in a lot of control panels I promise you. Super hard to get it in there and even then, you risk bending the wires.

It sounds awesome. It cuts and boosts HARD. The range you can tweek out is amazing, it's just a shame it comes at the price of poor knobs and huge circuit boards.

jimmarchi1

41016

10 years ago over 10 years ago

they probably made the board as small as they could without sacrificing any sound quality, sorry! I'll bet if it was bigger with full size components and lots of space between traces it would sound even better for you, but it definitely would not fit in your bass.... I am sure a lot of EMG's decisions on the circuit board were dictated by balancing a size and shape that would fit the average control cavity with the availability of quality subminiature parts and a good PCB layout that avoids audio crosstalk between traces.... I make no excuse for the crappy hardware, EMG should get their act together in that regard!