Urban Hifi MicroZOTL 2.0

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:

 

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

 

Fixed haha