Pricing and availability

We compare 600+ stores and found this item at 6 stores. Prices updated .

Sweetwater
4.0 (11)
$599.99
Guitar Center
4.5 (5)
$599.99
Amazon
2.5 (10)
$599.99 New
$559.99 Used (Like New)
Reverb
$479.30 New
$275.00 Used
Musician's Friend
4.0 (23)
$599.99
zZounds
3.0 (3)
$599.99

Price History

Based on price data from 5 merchants for "Peavey KB4". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

The Peavey KB4 is your all-in-one solution for versatile sound amplification, whether you're a keyboardist, vocalist, or multi-instrumentalist. Designed as a personal PA system cleverly disguised as a keyboard amp, the KB4 delivers 75 watts of power, expandable to 100 watts when connected to an external speaker. It's not just an amp; it's a full-fledged sound system with the ability to handle microphones, acoustic and electric guitars, drum machines, and even CD and DAT players.

With separate inputs on each channel, this amp offers flexibility and control, accommodating a variety of sound sources simultaneously. The built-in stereo mixer with a 2-band EQ allows for precise sound sculpting, while the Mic/Line channel provides a 3-band EQ, giving you even more tonal control over your voice or instrument. The KB4 also features a stereo effects loop, XLR balanced stereo line out, and a DDT defeat switch, ensuring your sound is clean and powerful.

Moving from gig to gig is a breeze, thanks to the built-in casters and handle, making this powerhouse as portable as it is versatile. Whether you're performing solo or with a band, the Peavey KB4 ensures your sound is always ready to rise above the crowd.

Key Features:

  • 15-inch speaker and tweeter
  • 75 watts/100 watts with external speaker
  • Stereo mixer with 2-band EQ and main effects send/return
  • Mic/Line channel with 3-band EQ and effects send/return
  • Monitor input with level control and assign
  • Headphone out with level control
  • Built-in casters and handle for easy moving

Product specs

Brand Peavey
Model KB 4 15" Keyboard Amplifier
Finish Black
Year 2010s
Categories Keyboard Amps
Color Family Black
Electronics Solid State
Number of Channels 2 Channels
Number of Inputs 2 Inputs
Output Power (Watts) 75
Reverb None
Speaker Configuration 1x15"

FAQs

What is the power output of the Peavey KB4 keyboard amplifier?

The Peavey KB4 keyboard amplifier has a power output of 75 watts, which can increase to 100 watts when connected to an external speaker.

How many channels does the Peavey KB4 have?

The Peavey KB4 features 3 channels, allowing you to connect multiple instruments or microphones simultaneously.

What size speaker is included in the Peavey KB4?

The Peavey KB4 is equipped with a 15-inch speaker, providing robust sound output suitable for various performance settings.

Does the Peavey KB4 have built-in reverb?

No, the Peavey KB4 does not include built-in reverb, focusing instead on delivering clean, powerful sound.

Is the Peavey KB4 suitable for live performances?

Yes, with its 75-watt output and 15-inch speaker, the Peavey KB4 is suitable for live performances, offering ample volume and clarity for most venues.

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Reviews

PROS

  • Exceptional value for its price point, outperforming competitors

  • Versatile input options accommodate multiple instruments simultaneously

  • Robust build quality ensures durability for live gigs

  • Powerful, ground-shaking bass and crisp trebles

  • Easy to transport with retractable handle and casters

  • Can act as a mini-PA system with mic input and stereo outputs

  • DDT filter limits heavy distortion, maintaining sound integrity

  • High-volume tolerance without distortion, suitable for medium-size venues

  • Warmth of tone enhances acoustic instruments and vocals

  • Full range of sound offers a realistic audio experience for keyboards

CONS

  • Lacks the power and bass response of its predecessor, the KB300

  • Highs and simulated vibrations of low piano notes could be better

  • Additional speaker needed for optimal sound, increasing gear to carry

  • Casters could be larger for easier transport across rough surfaces

  • Some users desire more volume and quality reverb effects

  • Inputs and outputs are all facing backward, complicating live adjustments

  • Appearance lacks character and visual appeal

  • Absence of built-in effects like chorus and reverb limits versatility

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Peavey KB4.

Comparisons

  • Owners report a preference for the Roland KC series over the Peavey KB4 due to a warmer, less "crunchy" sound, especially for jazz piano performances.

    Source
  • Users considering the Laney Audiohub AH150 as an alternative highlight its versatility in handling a variety of instruments, suggesting a broader range of frequency response compared to standard guitar amps.

    Source
  • The Behringer Ultratone KXD15 is considered an upgrade over the Peavey KB4 for handling guitar, bass, and synths in louder environments.

    Source

Features and functionality

  • Integrated mixers in amps like the Roland KC are favored for reducing setup complexity, eliminating the need for additional equipment like external mixers.

    Source
  • The Peavey KB4 is noted for its ability to handle multiple instruments through a single signal chain, making it suitable for complex setups with layered instrument sounds.

    Source
  • Some users find the Peavey KB4 lacks the ability to cut through in loud band settings, particularly when competing with drums.

    Source

User experience

  • The Peavey KB4 is criticized for producing an undesirable "crunchy" sound when used with digital pianos, contrasting with more favorable experiences using studio monitors.

    Source
  • It's been noted that the Peavey KB4 can be acquired second-hand at a reasonable price, making it an economical choice for budget-conscious musicians needing a practice amp for bass and keys.

    Source
  • Owners have noted that the Peavey KB2 provides sufficient volume in smaller spaces without needing maximum output.

    Source

Use cases and applications

  • The Peavey KB4 is less suited for small jazz gigs where a warm tone is preferred, highlighting a gap in its performance for such settings.

    Source
  • Ideal for small apartment spaces, the Peavey KB4 fits well where space is limited and a compact solution is needed for playing multiple instruments without excessive loudness.

    Source
  • The Peavey KB4 is functional for multi-instrument setups but may not suffice for loud band scenarios without additional amplification.

    Source

Setup and maintenance

  • Voltage compatibility issues arise when purchasing from Thomann, requiring considerations like voltage converters for regions with 120V power supply.

    Source

5.0 out of 5

Based on 1 Review and 1 Rating

5 star
4 star
3 star
2 star
1 star
joe_m_bettencourt

Sounds great

Full range keyboard amplifier with plenty of stereo inputs and a mic connection and ability to drive and external speaker. Good value

Artist usage

Add artist
See how Matt McCormack uses Peavey KB4

Matt McCormack

Bassist

Amasic

...
Verified via Photo

In an Instagram post, Matt McCormack tags the Peavey KB4 among other gear, indicating its use in his setup.

Genre Usage

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