Urban Hifi MicroZOTL 2.0

Discussion in 'Headphone Amplifiers and Combo (DAC/Amp) Units' started by velvetx, Dec 11, 2015.

  1. velvetx

    velvetx Gear Master West/Vendor Spotlight Moderator

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    Designed by David Berning and hand made in Washington DC this amplifier "utilizes patented Zero hysteresis Output Transformer-Less (ZOTL) technology to eliminate the distortion and noise typically found in tube amplifiers." Please note this link for the upcoming SBAF loaner tour and a big thanks to Urban Hifi for providing the review unit:

    http://www.urbanhifi.com/#home

    Price:

    $1,100

    Features:
    • Designed by David Berning - one of the world’s premier amplifier designers
    • Hand-made in Washington, DC
    • External power supply - extremely low noise floor
    • Drive low efficiency planar headphones easily
    • Drive high efficiency speakers (89 db efficiency or higher) to adequate volume
    • Transparent cover
    • Universal voltage power supply
    • 2 selectable inputs
    • Class A preamplifier output
    • Transformer-less design eliminates intermodulation distortion inherent in all transformer designs
    • Simulates the correct transformer turns ratio using impedance converter
    • Low impedance output easily matches wide range of headphones and speakers
    • Same technology & tone as more expensive Berning amplifiers
    • No heavy power or audio transformers
    • Patented power supply & impedance conversion technology
    • Optimized tube life expectancy of 10 - 20 years based on use
    • One year warranty
    Specifications:
    • Amplifier class: Push-pull Class A, no feedback
    • Sensitivity: 0.6V RMS for full output
    • Output impedance: (measured at 0.5A, 60 Hz) 2 ohms
    • Input impedance: 50k
    • Power Supply Input: Auto-switching 100V / 120V / 220/ 240V operation
    • Power Supply Output: 12VDC, 2.5A
    • Hum and noise:minimum 60mV RMS or 90dB below full output (20Hz-20kHz)
    • Power consumption from ac power source: 33W
    • Power output:with 4-ohm load: 1W, 1% THD, with 14-ohm load: 0.5W, 1% THD
    • Channel separation: (4-ohm loads) 46dB, 100Hz-10kHz, (14-ohm loads): 54 dB, 100Hz-10kHz
    • Frequency response full power: (4-ohm load) +0, -1dB 10Hz-20kHz, (14-ohm load): +0, -1dB 5Hz-50kHz
    • Voltage gain:(4-ohm load): 10.3dB, (14-ohm load): 12.4dB
    • Size: 7 7/8 inches (19.7 cm) deep, 9 1/2 inches (24.1 cm) wide, 4 3/4 inches (12 cm) tall (including connectors)
    • Net weight:5.35 lbs. (total amplifier and external power supply)
    • Finish: Aluminum case with lexan top
    • Tube complement per channel: 12AT7 input, phase splitter, 6SN7 p-p output
    Premium Components:
    • Tung-Sol Russian vacuum tubes
    • Locking Neutrik headphone jack with silver contacts
    • Silver coated copper wire with teflon insualtion
    • ALPS volume control
    • Hand-wound coils and impedance converters
    • Gold connectors throughout audio signal path
    Upgradability:

    Yes, you can roll tubes :)

    Pictures:

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    Last edited: Dec 11, 2015
  2. velvetx

    velvetx Gear Master West/Vendor Spotlight Moderator

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    Sorry if this seems like thread jacking but this needed a more official thread start.
     
  3. thegunner100

    thegunner100 Hentai Master Chief

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  4. velvetx

    velvetx Gear Master West/Vendor Spotlight Moderator

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    Fixed haha
     

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