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SEB3-BPA+ & MT Preamp

Balance~Active/Passive Volume~Passive Tone~Treble~Middle~Mids Toggle~Bass

Wake Up Your Tone with the TONE MONSTER SEB Series Preamps
Bring your passive pickups to life and unleash the full voice of your bass or guitar! If your instrument sounds flat, weak, or uninspiring, the TONE MONSTER SEB Series is your quick, affordable, drop-in upgrade. Designed for passive magnetic or piezo setups, these preamps instantly add clarity, power, and expressive control—turning dull signals into full, vibrant tone monsters.

Why Players Love the SEB Series

Affordable, high-performance upgrade for almost any passive instrument
Choose 2-band (Treble/Bass) or 3-band (Treble/Mid/Bass) EQ for total tone control
Adds presence, definition, and output instantly—no pickup swap required
Engineered and built in South Korea for GUITAR FUEL, guaranteeing quality and reliability

Plug In and Play – No Soldering Required!
Each SEB preamp arrives prewired and tested—ready to mount. Includes:

Premium output jack and durable brass-shaft pots
TBB6 balance pot with no-solder terminal block (just tighten with included screwdriver)
Bridge ground wire already installed
Works with single-pickup or selector-switch setups

Mount it, connect your pickups, stick down the compact sealed case, and start playing. It’s that simple.

Tone Control and Flexibility
Fine-tune for studio or stage with wide ±12 dB boost/cut per band and an onboard GAIN trim potentiometer for perfect input matching.

2-band: Treble/Bass
3-band: Treble/Mid/Bass with 250/500/800 Hz mid toggle (MT)
PA+ models add a push/pull Active/Passive Volume and passive tone option—switch on the fly between active power and classic passive warmth.

Built Tough and Quiet for Professional Use
Each SEB preamp is epoxy-sealed for protection and long life, built using Surface Mount Technology (SMT) for low-noise, high-reliability operation.

Compact case (45 x 25 mm) with adhesive pad for secure mounting
Runs on standard 9V battery (supports 18V operation for extra headroom and dynamics)
Optional DIY power upgrades: BAT-1 (18V) or BAT-2 (9V/18V switchable)

FEATURES

Manufactured in South Korea
Prewired harness ready to install
Brass shaft potentiometers for smoother control and longer life
Center detent on balance and tone potentiometers
±12 dB range for 2 or 3 bands of EQ
Configurable from 3 to 6 potentiometers
Gain trim pot for level adjustments
Balance pot with NO SOLDER terminal block
DIY upgrades (BAT1/BAT2) available for 18V power
Bass: ±12 dB at 100 Hz
Middle: ±12 dB at 800 Hz (SEB3)
Treble: ±12 dB at 4 kHz
Balance: MN500K w/center detent
Input Impedance: 1 MΩ
Current Draw: 0.16 mA
Operating Voltage Range: 6–22 V
Power Source: 9V alkaline battery (not included)
KNOBS ARE NOT INCLUDED!

Model	Features	Best For
SEB-AB	Concentric (stacked) Treble/Bass	Tight control layouts
SEB-B	Separate Treble/Bass/Mid pots	Traditional layouts
SEB-PA+	Push/Pull Active-Passive Volume	Players wanting flexibility
SEB-MT	Mid Toggle (250/500/800 Hz)	Sculpting precise mids

If you want your instrument to sound faster, punch harder, and cut through the mix—without changing pickups—the TONE MONSTER SEB Series Preamp is your ultimate tone upgrade.

Simple install. Professional sound. Big results.

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THERE IS AN ISSUE WITH YOUR ORDER YOU ARE RESPONSIBLE FOR THE COST OF RETURN!

The eBay system will only provide a return label for the U.S. address.

We will not ship a replacement or provide a refund until the return is received!