If you have a custom op-amp request, please contact us for availability.
Product Description
The UHA-6S.MKII is a high-performance USB DAC and amplifier combo. It features a 16-bit/48kHz USB streaming interface, 24-bit/96kHz optical and coaxial S/PDIF (TOSLINK) inputs, and a 1/8-inch analog line input. With its low-noise and low-distortion performance, the UHA-6S.MKII can drive a wide range of loads, from high-sensitivity earphones to high-impedance headphones.
The all-aluminum construction of the UHA-6S.MKII provides a solid yet lightweight feel. The internal Lithium-ion battery is rechargeable through the USB connection. A rear panel switch disables the charging function, maximizing the battery life of your portable computer or tablet PC and allowing the UHA-6S.MKII to function on a low-power USB port.
The UHA-6S.MKII can be customized for a particular sound signature. The output stage op-amps are socketed and easily replaceable. The audio signal path is designed without the use of DC blocking capacitors, which can cause an increase in harmonic distortion. An automatic DC compensation circuit removes any DC voltage at the output, allowing for maximum headphone performance.
What’s New?
The UHA-6S.MKII replaces the previous generation model, the UHA-6S. The MKII has several improvements over the original model:
High-performance Cirrus Logic DAC. The CS4398, Cirrus Logic’s flagship digital-to-analog converter, is a long-time favorite of audio enthusiasts due to its exceptional performance and audio quality.
Optical and coaxial S/PDIF digital inputs. The UHA-6S.MKII is compatible with S/PDIF sources up to 24-bit/96kHz.
True ground audio reference. With bipolar voltage rails at +/-6 VDC, there is no need for an output ground buffer which can cause additional output distortion and other audio artifacts. This also allows the UHA-6S.MKII to be used as a low-noise DAC/preamp into a line input such as an A/V receiver. Additionally, there are no DC-blocking capacitors in the signal path, which can cause harmonic distortion.
Socketed op-amps. For full customization, the output stage op-amps in the UHA-6S.MKII are socketed and easily replaceable. Single-channel op-amps are used throughout for minimal channel crosstalk.
Two-position gain control. Optimize performance for your headphones or earphones by choosing from two gain settings.
Automatic input selection. The input is automatically selected among the four available sources: analog, USB, optical S/PDIF, and coaxial S/PDIF.
Advanced battery management. Use any high-power USB port or USB charger accessory to charge the UHA-6S.MKII. A rear panel switch disables charging, maximizing the battery life of your portable computer or tablet PC. The front-panel power LED indicates low-battery status. A battery disconnect circuit prevents full discharge, maximizing the lifetime of the battery. The UHA-6S.MKII is compatible with most standard 5V USB wall chargers.
Plug and Play USB operation. The UHA-6S.MKII uses the standard USB audio drivers which are included in Windows and Mac operating systems.
Specifications
Max output power (1% THD):
30 mW into 16 ohms
55 mW into 32 ohms
110 mW into 100 ohms
55 mW into 300 ohms
THD+N at 1 kHz (optical input, 20 Hz to 80 kHz bandwidth, no weighting):
0.0035%, 1 mW into 16 ohms
0.0060%, 1 mW into 32 ohms
0.0022%, 1 mW into 100 ohms
0.0035%, 1 mW into 300 ohms
Frequency response: <10 Hz to >22 kHz, +/-0.1 dB
Battery life:
>30 hours typical, analog input
>10 hours typical, S/PDIF input
Dimensions: 70 x 84 x 20 mm (2.8 x 3.3 x 0.8 inches)
Weight: 6.0 oz (170 g)
Summary
16-bit/48kHz USB digital audio
24-bit/96kHz optical and coaxial S/PDIF digital audio inputs (TOSLINK)
1/8″ analog input
Bipolar voltage rails (+/-6 VDC) with true ground reference
UHA-6S MKII
In stock.
Ships in 2-4 days.
UHA-6S.MKII
USB DAC and Headphone Amplifier
with S/PDIF Optical+Coaxial Inputs
Choosing Output Op-Amps
In stock. Orders ship within 2-4 business days.
If you have a custom op-amp request, please contact us for availability.
Product Description
The UHA-6S.MKII is a high-performance USB DAC and amplifier combo. It features a 16-bit/48kHz USB streaming interface, 24-bit/96kHz optical and coaxial S/PDIF (TOSLINK) inputs, and a 1/8-inch analog line input. With its low-noise and low-distortion performance, the UHA-6S.MKII can drive a wide range of loads, from high-sensitivity earphones to high-impedance headphones.
The all-aluminum construction of the UHA-6S.MKII provides a solid yet lightweight feel. The internal Lithium-ion battery is rechargeable through the USB connection. A rear panel switch disables the charging function, maximizing the battery life of your portable computer or tablet PC and allowing the UHA-6S.MKII to function on a low-power USB port.
The UHA-6S.MKII can be customized for a particular sound signature. The output stage op-amps are socketed and easily replaceable. The audio signal path is designed without the use of DC blocking capacitors, which can cause an increase in harmonic distortion. An automatic DC compensation circuit removes any DC voltage at the output, allowing for maximum headphone performance.
What’s New?
The UHA-6S.MKII replaces the previous generation model, the UHA-6S. The MKII has several improvements over the original model:
Features
High-performance Cirrus Logic DAC. The CS4398, Cirrus Logic’s flagship digital-to-analog converter, is a long-time favorite of audio enthusiasts due to its exceptional performance and audio quality.
Optical and coaxial S/PDIF digital inputs. The UHA-6S.MKII is compatible with S/PDIF sources up to 24-bit/96kHz.
True ground audio reference. With bipolar voltage rails at +/-6 VDC, there is no need for an output ground buffer which can cause additional output distortion and other audio artifacts. This also allows the UHA-6S.MKII to be used as a low-noise DAC/preamp into a line input such as an A/V receiver. Additionally, there are no DC-blocking capacitors in the signal path, which can cause harmonic distortion.
Socketed op-amps. For full customization, the output stage op-amps in the UHA-6S.MKII are socketed and easily replaceable. Single-channel op-amps are used throughout for minimal channel crosstalk.
Two-position gain control. Optimize performance for your headphones or earphones by choosing from two gain settings.
Automatic input selection. The input is automatically selected among the four available sources: analog, USB, optical S/PDIF, and coaxial S/PDIF.
Advanced battery management. Use any high-power USB port or USB charger accessory to charge the UHA-6S.MKII. A rear panel switch disables charging, maximizing the battery life of your portable computer or tablet PC. The front-panel power LED indicates low-battery status. A battery disconnect circuit prevents full discharge, maximizing the lifetime of the battery. The UHA-6S.MKII is compatible with most standard 5V USB wall chargers.
Plug and Play USB operation. The UHA-6S.MKII uses the standard USB audio drivers which are included in Windows and Mac operating systems.
Specifications
Summary
Reviews
Leckerton UHA-6S MKII Portable Headphone Amplifier (innerfidelity.com)
User Guide