Avalon U5 Pure Class A Mono Instrument DI-Preamplifier  

Item #: 
1409690593614
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Avalon' U5 is a high-voltage DI-preamp that 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 instru... Read More

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Overview

Avalon' U5 is a high-voltage DI-preamp that 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 the features that professional users demand.

Sonic Excellence
Designed to optimize absolute signal integrity and musical performance, the U5 includes many professional features including state-of-the-art, high input impedance input stage for zero load effect on sensitive pickups and keyboards, 100% discrete, Pure Class A signal amplifiers, practical user features and rugged hardware that' designed to deliver high performance audio for many years. The U5 is ideally suited for bass guitar, acoustic instruments, electric guitars, keyboards, synthesizers and low output pickups.

Designed For Deep and Controlled Bass
Avalon U5 DI-preamps have been in use around the world since 1995. They have found their way into the world's leading musicians rigs and recording sessions and been featured on thousands of top selling (and sounding) albums and live performances.

Minimum Signal Path Design
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 +30dB.
  • 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
Specifications
  • 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 (216 x 88 x 305mm)
    Weight-Packed: 12lbs (5.4kg)
    Rack mount kit (1) RM-1: Single U5 19 inch rack mount kit (holds one half rack unit)
    Rack mount kit (2) RM-2: Dual U5 19 inch rack mount kit (holds two half rack units)
Warranty
MANUFACTURER'S WARRANTY
One year parts and labor warranty. 90 day warranty for tubes.


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