Detail 01
Keyboard amp rather than guitar amp
Built to stay clean and full-range. Keyboard patches carry their own tone, so coloring from the amp works against them.
Product detailSKU #1274115049979
BehringerULTRATONE K450FX Keyboard Amp/PA System
balancedversatilepopelectronic
1/6
Independent shopping perspective
The Korena take
A keyboard amp that doubles as a small PA, with onboard effects. For a keyboard player who also needs to run a mic or a backing track.
Strong match
Who this is for
- Keyboard player at rehearsals and small rooms needing full-range sound
- Solo performer running keys and a vocal mic together
- Practice space where one box has to cover several sources
Consider the trade-offs
When to look elsewhere
- Guitarists after amp overdrive, since keyboard amps stay clean by design
- Larger rooms where a full PA with subs is the real answer
- Anyone carrying gear up stairs alone at 32 lb
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Doubles as a PA system
Multiple inputs with their own level control, so a mic or second player shares the same box instead of needing a second rig.
Detail 03
FX onboard
Reverb and similar effects live in the amp, so a keyboard without good built-in ambience still sits properly in a room.
Detail 04
Balanced XLR output, roughly 300 ohm
Feeds a house desk or recorder over a long cable without hum. This is how you get the amp into a bigger PA.
Detail 05
Unbalanced 1/4" output, roughly 150 ohm
For short runs to a nearby powered speaker or recorder. Over long distance it will pick up noise the XLR won't.
Detail 06
32 lb
One-hand carry is possible but awkward. Realistic for load-in by car, less so for regular public transit gigs.
Final check
Know before you order
- 01No keyboard stand, mic or cables included. Budget for both input cables.
- 02Check your keyboard's outputs are 1/4", since many stage pianos are.
- 03Set the amp's tone flat first and shape sound at the keyboard.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I plug a microphone into it?
Yes. It's built as a keyboard amp and small PA, so a mic and a keyboard can run at once with separate level control.
02Will it work as a guitar amp?
It will make sound, but it's voiced clean and full-range. There's no guitar-amp overdrive character, so you'd need pedals for dirt.
03Can I send it to the house PA?
Yes, through the balanced XLR output. That's the connection to use for anything longer than a few feet.
04Is it loud enough for a gig?
It fits rehearsals, small rooms and coffeehouse-size gigs. For anything larger, use the XLR out into the house system.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
2 detailsConnections & power
- XLR Connector
- approx. 300 Ohm balanced
- Output Impedance 1 4 Quot TS Connector
- approx. 150 unbalanced
1 detailsSize & weight
- Weight
- 32.19
