---
product_id: 7446485
title: "Ultratone K900fx Ultra-Flexible 90-Watt, 3-Channel Pa System / Keyboard Amplifier With Fx And Fbq Feedback Detection"
brand: "behringer"
price: "4212 zł"
currency: PLN
in_stock: true
url: https://www.desertcart.pl/products/7446485-ultratone-k900fx-ultra-flexible-90-watt-3-channel-pa-system
store_origin: PL
region: Poland
---

# 90W powerful output 5-band graphic EQ with FBQ feedback detection 3 independent channels Ultratone K900fx Ultra-Flexible 90-Watt, 3-Channel Pa System / Keyboard Amplifier With Fx And Fbq Feedback Detection

**Brand:** behringer
**Price:** 4212 zł
**Availability:** ✅ In Stock

## Summary

> 🎹 Elevate your sound, dominate the stage — feedback-free and flawless every time!

## Quick Answers

- **What is this?** Ultratone K900fx Ultra-Flexible 90-Watt, 3-Channel Pa System / Keyboard Amplifier With Fx And Fbq Feedback Detection by behringer
- **How much does it cost?** 4212 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/7446485-ultratone-k900fx-ultra-flexible-90-watt-3-channel-pa-system)

## Best For

- behringer enthusiasts

## Why This Product

- Trusted behringer brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready for Any Gig:** Stand-mountable design with subwoofer out and headphone jack for seamless practice and performance.
- • **Triple Channel Control:** Mix and match three separate inputs with individual volume and FX sends for ultimate versatility.
- • **Instant Feedback Detection:** FBQ system highlights problem frequencies so you stay feedback-free and professional on stage.
- • **Pro-Grade Built-In Effects:** 100 presets of 24-bit digital FX including reverb, chorus, and delay to elevate your live sound.
- • **Crystal-Clear 90-Watt Power:** Unleash your keyboard’s full sonic potential with robust, room-filling sound.

## Overview

The Behringer Ultratone K900FX is a 90-watt, 3-channel keyboard amplifier and PA system featuring a revolutionary FBQ feedback detection system, 5-band graphic EQ, and 24-bit digital effects with 100 presets. Designed for professional keyboardists, it offers separate volume and FX controls per channel, a 12" BUGERA woofer, subwoofer output, and versatile connectivity including XLR mic input and CD input. Its stand-mountable design and headphone output make it perfect for both live gigs and quiet practice sessions.

## Description

Ultratone K900fx Ultra-Flexible 90-Watt, 3-Channel Pa System / Keyboard Amplifier With Fx And Fbq Feedback Detection

## Features

- Revolutionary FBQ feedback detection system instantly reveals critical frequencies
- Cd input allows you to play along to your favorite music
- Full three- channel operation with separate volume and fx send per channel
- Main section with fx return level and master volume

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Black |
| Item Weight | 45 Pounds |
| Item Dimensions D x W x H | 11.77"D x 19.37"W x 16.89"H |
| Power Source | Corded Electric |
| Output Channel Quantity | 3 |
| Amplifier Type | Solid State |
| Connector Type | XLR |
| Number of Bands | 5 |
| Speaker Size | 12 Inches |
| Compatible Devices | Keyboard |
| Output Wattage | 9E+1 Watts |

## Product Details

- **Brand:** Behringer
- **Color:** Black
- **Compatible Devices:** Keyboard
- **Material:** Metal
- **Output Wattage:** 90 Watts

## Images

![Ultratone K900fx Ultra-Flexible 90-Watt, 3-Channel Pa System / Keyboard Amplifier With Fx And Fbq Feedback Detection - Image 1](https://m.media-amazon.com/images/I/8174A7UXQXL.jpg)

## Questions & Answers

**Q: Is this amp mainly used for keyboards or acoustic guitars? What is it best suited for?**
A: It is a versatile amp that can be used for either.

**Q: Can I use this as a vocal amplifier/PA?**
A: Yes. It has a channel with XLT input and a 1/4 inch input. It's designed as a keyboard amp and PA. It is surprisingly loud and will fill a good sized room with sound. I usually sit it on a table instead of the floor. It's a good piece for the money.

**Q: Can I use it on 220V ?**
A: sorry I use and love this Amp but just not sure if you can run it on 220V, I use on one 110V

**Q: can you use sep. effects petals, i have a volcal harminizer effects petal,can that be hooked up to my mic.**
A: I haven't tried a harmonizer, but I have tried other effects plugged in line. Should work fine.

## Frequently Bought Together

- Behringer Ultratone K900FX - 90W 12-inch Keyboard Amp
- Elebase 1/4 Inch TRS Instrument Guitar Cable 10ft 2Pack,Straight 6.35mm Guitar Bass AMP Cord,Quarter Inch 6.3mm Male Jack Stereo Audio Balanced Line for Electric Guitar,Bass,Keyboard,Amplifier,Speaker

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**Shop now:** [https://www.desertcart.pl/products/7446485-ultratone-k900fx-ultra-flexible-90-watt-3-channel-pa-system](https://www.desertcart.pl/products/7446485-ultratone-k900fx-ultra-flexible-90-watt-3-channel-pa-system)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-25*