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Avalon U5 Direct Box Instrument Preamplifier - 15th Anniversary  

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    A high-voltage DI-preamp with a passive tone selector and a variable gain preamp and filter.

    The U5 Direct Box Instrument Preamp - 15th Anniversary is a high-voltage DI-preamp combining 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.

    Sonic Excellence
    The Avalon U5 Pure Class A instrument DI & preamplifier is one of the most powerful direct boxes available today. Designed to optimize absolute signal integrity and musical performance, the U5 includes many features that are ideal for bass guitar and acoustic instruments, electric guitars, keyboards, synthesizers and low output pickups.

    Features include a 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 designed to deliver true high performance audio for many years.

    Designed for Deep & 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 the best-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.

    • Pure Class A, 100% discrete design
    • Smooth musical detail and sonic excellence
    • Variable gain preamp to +30dB
    • Dual microphone and line outputs
    • Hi-Z 3,000,000Ω 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

    The U5 has been around for 15 years. Order this anniversary edition today and hear why.


    U5 Direct Box Instrument Preamplifier - 15th Anniversary Specifications:

    • 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" (216mm x 88mm x 305mm)
    • Weight-Packed: 12lb. (5.4kg)
    Customer Reviews

    Review Snapshot®

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    AvalonU5 Direct Box Instrument Preamplifier - 15th Anniversary

    (based on 1 review)

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    Reviewed by 1 customer

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    (1 of 5 customers found this review helpful)


    Is the bast pre amp I had use soul good

    By Bassbass

    from Georgia

    About Me Professional Musician

    Ask me a question

    Verified Buyer


    • Clear Sound
    • Easy To Use
    • Powerful
    • Professional Functions
    • Versatile


      Best Uses

      • Professional Recording

      Comments about Avalon U5 Direct Box Instrument Preamplifier - 15th Anniversary:

      It's ise to use. And is the beast. May friends will bay 1to

      Comment on this review

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