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Leckerton Audio headphone amplifiers are engineered to let you enjoy the music.
UHA760
Advanced Asynchronous USB DAC and Headphone Amplifier with Digital Volume Control and Crossfeed
Gain
Low-gain setting: -12 dB at full volume setting
Medium-gain setting: 0 dB at full volume setting
High-gain setting: +12 dB at full volume setting
Volume Control
Digitally-controlled, 1-dB steps
USB Sample Rate
Up to 48kHz/16-bit
DAC Chip
Cirrus Logic CS4398
Max Output Power
16 ohms: 30 mW
32 ohms: 55 mW
62 ohms: 100 mW
100 ohms: 125 mW
300 ohms: 55 mW
(Measurement conditions: Analog input at 1 kHz, output <1% THD)
THD+N
16 ohms: 0.0036% at 1 mW, 0.0037% at 10 mW
32 ohms: 0.0035% at 1 mW, 0.0038% at 10 mW, 0.0078%, at 30 mW
62 ohms: 0.0029% at 1 mW, 0.0034% at 10 mW, 0.0061% at 50 mW
100 ohms: 0.0030% at 1 mW, 0.0030% at 10 mW, 0.0048% at 50 mW
300 ohms: 0.0042% at 1 mW, 0.0036% at 10 mW, 0.0031% at 40 mW
(Measurement conditions: Analog input at 1 kHz, 20 Hz to 20 kHz bandwidth, no weighting)
Frequency Response, Analog Input
<3 Hz to 75 kHz, ±1.0 dB
7 Hz to 22 kHz, ±0.1 dB
Frequency Response, USB Input
<3 Hz to 23 kHz, ±1.0 dB
7 Hz to 22 kHz, ±0.1 dB
(Measurement condition: 48 kHz sample rate)
Output impedance
<0.5 ohm
The Leckerton Audio design philosophy is centered on the goal of audio transparency. With a well-designed amplifier, you should hear the music, not the amp. Leckerton Audio amplifiers are engineered to present audio at its highest fidelity, providing a direct, engaging, and enjoyable listening experience. This is accomplished by selectively incorporating circuit design techniques which help to keep noise and distortion to a minimum, while at the same time avoiding unnecessary details which increase the cost or complexity of the design without actually providing any real benefits. Key elements of this approach include the choice of appropriate high-quality circuit components, proper circuit board layout, and extensive real-world testing.
As owner and designer, Nick Kettman manages all the day-to-day operations of Leckerton Audio. He previously worked as an Applications Engineer at Cirrus Logic in Austin, Texas, a semiconductor company which supplies analog and digital signal processing components such as digital audio converters. At Cirrus Logic, Nick provided engineering design support to customers in industries such as mobile telephony, automotive audio, and professional audio. Prior to Cirrus Logic, Nick worked for the Shure microphone company, located near Chicago, Illinois. At Shure, Nick worked as a product development engineer on a range of products including digital wireless microphones, USB microphones, and USB audio interface devices.
Nick earned his Master of Science in Engineering degree from The University of Texas at Austin where he studied electronic design, acoustic transducer design, psychoacoustics, and digital signal processing. Nick has two degrees from Northern Illinois University in DeKalb, Illinois: a Bachelor of Science in Electrical Engineering, and a Bachelor of General Studies with an emphasis in recording studio technology and music production.
http://www.leckertonaudio.com/
UHA760
Advanced Asynchronous USB DAC and Headphone Amplifier with Digital Volume Control and Crossfeed
Gain
Low-gain setting: -12 dB at full volume setting
Medium-gain setting: 0 dB at full volume setting
High-gain setting: +12 dB at full volume setting
Volume Control
Digitally-controlled, 1-dB steps
USB Sample Rate
Up to 48kHz/16-bit
DAC Chip
Cirrus Logic CS4398
Max Output Power
16 ohms: 30 mW
32 ohms: 55 mW
62 ohms: 100 mW
100 ohms: 125 mW
300 ohms: 55 mW
(Measurement conditions: Analog input at 1 kHz, output <1% THD)
THD+N
16 ohms: 0.0036% at 1 mW, 0.0037% at 10 mW
32 ohms: 0.0035% at 1 mW, 0.0038% at 10 mW, 0.0078%, at 30 mW
62 ohms: 0.0029% at 1 mW, 0.0034% at 10 mW, 0.0061% at 50 mW
100 ohms: 0.0030% at 1 mW, 0.0030% at 10 mW, 0.0048% at 50 mW
300 ohms: 0.0042% at 1 mW, 0.0036% at 10 mW, 0.0031% at 40 mW
(Measurement conditions: Analog input at 1 kHz, 20 Hz to 20 kHz bandwidth, no weighting)
Frequency Response, Analog Input
<3 Hz to 75 kHz, ±1.0 dB
7 Hz to 22 kHz, ±0.1 dB
Frequency Response, USB Input
<3 Hz to 23 kHz, ±1.0 dB
7 Hz to 22 kHz, ±0.1 dB
(Measurement condition: 48 kHz sample rate)
Output impedance
<0.5 ohm
The Leckerton Audio design philosophy is centered on the goal of audio transparency. With a well-designed amplifier, you should hear the music, not the amp. Leckerton Audio amplifiers are engineered to present audio at its highest fidelity, providing a direct, engaging, and enjoyable listening experience. This is accomplished by selectively incorporating circuit design techniques which help to keep noise and distortion to a minimum, while at the same time avoiding unnecessary details which increase the cost or complexity of the design without actually providing any real benefits. Key elements of this approach include the choice of appropriate high-quality circuit components, proper circuit board layout, and extensive real-world testing.
As owner and designer, Nick Kettman manages all the day-to-day operations of Leckerton Audio. He previously worked as an Applications Engineer at Cirrus Logic in Austin, Texas, a semiconductor company which supplies analog and digital signal processing components such as digital audio converters. At Cirrus Logic, Nick provided engineering design support to customers in industries such as mobile telephony, automotive audio, and professional audio. Prior to Cirrus Logic, Nick worked for the Shure microphone company, located near Chicago, Illinois. At Shure, Nick worked as a product development engineer on a range of products including digital wireless microphones, USB microphones, and USB audio interface devices.
Nick earned his Master of Science in Engineering degree from The University of Texas at Austin where he studied electronic design, acoustic transducer design, psychoacoustics, and digital signal processing. Nick has two degrees from Northern Illinois University in DeKalb, Illinois: a Bachelor of Science in Electrical Engineering, and a Bachelor of General Studies with an emphasis in recording studio technology and music production.
http://www.leckertonaudio.com/
