UltraSound PRO250 Acoustic Guitar Amplifier Professional Features and Sound for All This is the kind of acoistic amp guitar players dream of. The Ultrasound PRO250 from Dean Markley is our next generation acoustic guitar amp, delivering unmatched acoustic tone in a lightweight combo package. The PRO250 is a 250W TRI-AMP amplifier, which delegates its power and authority to three frequency ranges. First, it delivers 150W RMS through its Heavy-Duty 10" Eminence Speaker, 50W RMS through its special 4" midrange driver, and 50W through its high efficiency “Super- Tweeter” driver with active crossover. The Super-Tweeter is controlled by its own Independent Volume Control for precise control of highs and harmonics. Such control of discrete frequency components has never before been offered in a complete acoustic amplifier package. The Ultrasound PRO250 features an array of professional effects and interfaces to connect with studio and auditorium sound systems. It starts with two independent channels, each with volume and active EQ along with independent 24 bit digital EFX processors, producing studio quality reverbs, delays, and chorus effects. FREE SHIPPING PRO250 Back View The PRO250 also gives you an Auxiliary Stereo input for MP3, tape/CD player, drum machine, and other devices. 3 balanced direct XLR outs. 3 line outs. 2 EFX loops, and a Global ground lift to eliminate ground-loop hum. PRO250 Top Panel GUITAR CHANNEL (CHANNEL - 1) GUITAR INPUT: Instrument input. Designed for both active and passive pickups. VOLUME: Adjusts the preamp gain, (sensitivity), of the guitar channel, to match your guitar pickup to the amplifier. BASS: Adjusts the amount of cut or boost in the low frequency range. TREBLE: Adjusts the amount of cut or boost in the high frequency range. NOTCH FILTER HZ: Sets the frequency of the 18db cut NOTCH FILTER that is used to control resonant feedback. Notch Filter: ON/OFF - Enables or disables the notch filter control. EFX LEVEL: Controls the amount of digital effect mixed in to the guitar signal from 0% to 50%. EFX MODE: This is a rotary encoder, which selects 1 of 16 different digital effects. See Digital Effects Program List. (16 effects) SHAPE: ON/OFF This toggle switch enables or disables the SHAPE control. The shape control is a mid dip control. In the on position the mid frequencies will be cut and the high and low frequencies will be boosted. MASTER SECTION HORN VOLUME: Adjusts the amount of signal being sent to the on board electronic crossover which feeds the separate high frequency power amplifier. A higher setting of this control adds crisp clean high end to the sound of the amplifier which makes this control one of the most important when setting up your PRO for your applications. If you are playing an acoustic instrument a higher level on the Horn Volume control will be desirable. If you are playing an electric guitar through a digital efx processor a lower Horn Volume level may be more desirable to reduce any harshness. The Horn Volume control when used in conjunction with the separate Treble controls in the pre-amp sections will give you a lot of control and flexibility over the high frequency section of the PRO. MASTER VOLUME: Adjusts the overall loudness of the amplifier. MIC/AUX CHANNEL (CHANNEL - 2) MIC INPUT: XLR input designed for direct connection of a microphone. AUX INPUT: 1/4” input designed for connection to an instrument such as a guitar or keyboard, and can also be used for connection to a line level signal from a digital effects processor. MIC VOLUME: Controls the volume of the microphone signal. AUX VOLUME: Controls the volume of the Aux. signal. BASS: Adjusts the amount of cut or boost in the low frequency range. MID: Adjusts the amount of cut or boost in the mid frequency range. TREBLE: Adjusts the amount of cut or boost in the high frequency range. EFX LEVEL: Controls the amount of digital effect mixed in to the Mic/Aux signal from 0% to 50%. EFX MODE: This is a rotary encoder, which selects 1 of 16 different digital effects. OVERLOAD LED: This indicator will illuminate when an overload situation occurs in the Channel - 2 pre-amp section. IF an overload is detected in either the Mic Input front end, Aux input front end, or the tone controls this LED will illuminate. This is very useful when setting up Channel - 2 for different Microphones, instruments, or effects processors. To remedy an overload situation the corresponding Volume control on the PRO or on the connected instrument can be turned down until the LED does not illuminate. The Ultrasound PRO250 is a lot of amp, and they won't let us offer it for any less. So we give you FREE SHIPPING, in the continental US, just to sweeten the deal. You can also check it out at www.deanmarkleyamps.com
First, it delivers 150W RMS through its Heavy-Duty 10" Eminence Speaker, 50W RMS through its special 4" midrange driver, and 50W through its high efficiency “Super- Tweeter” driver with active crossover. The Super-Tweeter is controlled by its own Independent Volume Control for precise control of highs and harmonics. Such control of discrete frequency components has never before been offered in a complete acoustic amplifier package. The Ultrasound PRO250 features an array of professional effects and interfaces to connect with studio and auditorium sound systems. It starts with two independent channels, each with volume and active EQ along with independent 24 bit digital EFX processors, producing studio quality reverbs, delays, and chorus effects.
The PRO250 also gives you an Auxiliary Stereo input for MP3, tape/CD player, drum machine, and other devices. 3 balanced direct XLR outs. 3 line outs. 2 EFX loops, and a Global ground lift to eliminate ground-loop hum.
