Avalon Design U5

Mono Preamp, Instrument DI Class A w/EQBSW PART: U5

Get the ultimate tone for bass or other DI applications with this high-power preamp from Avalon. The U5 high-voltage DI-preamp combines a unique passive tone selector with a variable gain preamp and filter. The high input impedance accepts a wide variety of signal levels and instruments from acoustic guitars to high-output active bass guitars and keyboards. The U5 direct box is loaded with sonic character and user features professionals demand.

The U5 includes a variable gain Class A preamplifier to boost low level pickup signals and a high level speaker input for capturing the live sound of the instruments amplifier. Six passive tone-EQ curves are also included to enhance a variety of acoustic and electric instruments. A high-cut switch eliminates unwanted acoustic pickup and high frequency noise, while a  headphone monitor amp has been included for personal listening. Twin DC coupled Class A output amplifiers drive both low level microphone preamp inputs and high level +4dB inputs for direct to tape recording or processing. The active-to-thru switch selects either the instrument input directly or sends the boosted-equalized signal to the amplifier via the front panel jack. A ground isolation switch eliminates any possible earth loop or AC buzz problems with complete safety.

Features:

* Pure Class A, 100% discrete design

* Smooth musical detail and sonic excellence

* Variable gain preamp to +30 dB

* Dual microphone and line outputs

* Hi-Z 3,000,000 ohm input impedance

* Very low noise -100dB

* High headroom +30dB

* Six tone bank selections

* DC coupled Class A output for superior bass

* High cut switch eliminates noise

* LED active signal indicator

* Headphone monitor output jack

* Low distortion less than 0.5% THD and IMD

* High level 400 watt speaker input

* Active to thru selector - ground isolation switch

* 100% discrete power supplies for audio path

* Internal toroidal power supply for low noise

* Long lasting, stainless steel hardware

* Circuit Topology: 100% discrete, high-voltage Class A

* Gain: Switched 3dB steps, maximum gain +30dB

* Input Impedance: 3 ,000,000 ohm unbalanced (single ended)

* Maximum Input Level +24dBu unbalanced, 400w speaker input

* Output Connectors (2): XLR type, pin 2 hot electronic balanced

* Maximum Output Level (Class A): +30dBu DC coupled, balanced 600 ohms (mic and line out)

* Headphone Output: 0.5w into 600 ohms

* Noise 20kHz Unweighted: -100dBu minimum gain position

* Distortion THD, IMD: 0.1% at +10dB

* Frequency Response, -/+0.5dB: 5Hz to 100kHz

* Frequency Response, -3dB: 1Hz to 500kHz (input band limited)

* High Cut Filter: -3dB at 8kHz minimum phase design

* Tone Selector: Six position rotary switch, all passive filters

* AC Power: Internal toroidal AC supply

* Dimensions: 8.5 x 3.5 x 12 in; 12 lbs

* Rack kits available optionally which mount single or dual U5 and/or M5 units in 19" rack

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