Rating and Reviews: Behringer K450FX Amp. The Behringer K450FX 10" Ultratone is an ultra-flexible 45-watt 3-channel PA system / keyboard amplifier with FX and FBQ feedback detection. Tuki Padded Amp Cover for Behringer K450FX Keyboard Combo 1/2" Foam (behr018p) Brand New. $59.00. Buy It Now USER MANUAL (Dutch) for Behringer Ultratone K3000FX K1800FX K900FX K450FX Amp. Pre-Owned. $2.51. From United Kingdom. or Best Offer +$6.30 shipping. I have had some bad experiences with a few different Behringer amps over the last 10 years, so I really don't purchase them anymore. But in a certain situation I didn't have a choice but to use the Behringer Ultratone K900FX. It is a 90 watt 3 channel amp that can be used for your keyboard. The sub is 12" and the tweeter is only 1". View a manual of the Behringer Ultratone K450FX below. All manuals on ManualsCat.com can be viewed completely free of charge. By using the 'Select a language' button, you can choose the language of the manual you want to view. Questions about the Behringer Ultratone K450FX - 45W 10" Keyboard Amp? Sweetwater's Sales Engineers are regarded as the most experienced and knowledgeable professionals in the music industry, with extensive music backgrounds and intense training on the latest products and technologies. I am old and have loads of medical problems but I am still playing gigs. I have loads of amps including the Roland KC-550. All are way to heavy. At 40 lbs. this amp should work well enough for Behringer Ultratone K450FX Review Behringer Ultratone K450 FX. Bought this unit about 7 years ago. It worked well. Lovely sound and just enough volume for small venues and even outdoor. Mostly I use this as PA system making the most of the 3 channels for vocals especially with the builtin The super-compact, self-contained Behringer ULTRATONE K450FX is a perfect keyboard amp or PA setup for public address systems, keyboards, voice, or various drum/backing machines. 45W of power are handled confidently by a headroom-rich 10" speaker, making sure that you can faithfully reproduce a broad repertoire of signals. The Behringer K450FX Ultratons is an ultra-flexible, 45-Watt, 3-channel Keyboard Amplifier and PA System with digital effects and Behringer's FBQ Feedback Detection system. This a super-compact, self-contained sound system is perfect for public address systems, keyboards, voice, or various drum/backing machines. The super-compact, self-contained Behringer ULTRATONE K450FX is a perfect keyboard amp or PA setup for public address systems, keyboards, voice, or various drum/backing machines. 45W of power are handled confidently by a headroom-rich 10" speaker, making sure that you can faithfully reproduce a broad repertoire of signals. Behringer K450FX user manual. For your convenience If looking through the Behringer KFX user manual directly on this website is not convenient for you, there are two possible solutions: Ultracompact watt keyboard amplifier with vtc-technolo