InLine AmpUSB, Hi-Res AUDIO HiFi DSD USB Audio DAC, Vacuum Tube amplifier

High-resolution audio processing:Supports PCM up to 384kHz/32bit and DSD128 for excellent sound quality with digital sources.
Asynchronous USB signal processing:Minimizes jitter for particularly precise and interference-free playback - ideal for professional applications.
Integrated high-end DAC:The Cirrus Logic CS4392 chip ensures clean, detailed signal conversion at studio level.
Tube amplification for natural sound:The built-in 12AU7 tube delivers a warm, harmonious sound character with smooth transitions.
Flexible connection options:3.5mm & 6.3mm headphone outputs, line-out and optical S/PDIF output for versatile use.

The InLine® AmpUSB is a powerful USB DAC with integrated tube headphone amplifier designed for professional audio applications and demanding users. With support for high-resolution formats such as PCM up to 384kHz/32bit and DSD128 (DoP and native), the device offers outstanding sound quality and is ideal for use in the studio, in laboratory environments or as a high-end audio solution at the workplace.
The asynchronous transfer mode means that the audio signal is processed with particular stability and precision - a clear advantage over simple USB sound cards. The integrated DAC chip from Cirrus Logic (CS4392) ensures low-loss signal conversion with a signal-to-noise ratio of approx. 110 dB. The output power is up to 210 mW at 16 ohms, which also enables the operation of high-quality headphones with a high impedance of up to 600 ohms.
The analog signal amplification is provided by a genuine 12AU7 tube (ECC82), which gives the sound a natural warmth. Thanks to several output options - including 3.5mm and 6.3mm jack, optical S/PDIF and line-out - the AmpUSB can be integrated in a variety of ways. Power is supplied externally via a 12V power supply unit. LEDs indicate the current playback mode (PCM or DSD).
The aluminum housing ensures stability and a high-quality look. Common Windows and macOS systems as well as Android devices are supported via OTG adapter. The AmpUSB provides a flexible and audiophile interface that is ideal for professional use.

SNR:approx. 110 dB (A-weighting)
Max. Output power:210 mW / 16 Ohm, 190 mW / 32 Ohm
Headphone impedances:16 - 600 Ohm
Tube:12AU7 / ECC82
Outputs:6.3mm & 3.5mm jack, 3.5mm line-out & optical S/PDIF
Supported OS:Windows XP to 10 (32/64 bit), macOS from 10.6, Android (OTG)
Dimensions:11cm x 8.1cm x 8cm
Scope of delivery:Amplifier, USB cable, driver CD, power supply unit, instructions

InLine AmpUSB, Hi-Res AUDIO HiFi DSD USB Audio DAC, Vacuum Tube amplifier. Signal-to-Noise Ratio (SNR): 110 dB, Audio D/A Converter (DAC): 32-bit/384kHz. Headphone connectivity: 3.5mm. Power source: USB. Width: 81 mm, Depth: 110 mm, Height: 80 mm. Mac operating systems supported: Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9...

How to use

Connect the AmpUSB to your computer using the USB cable and to your headphones or audio system using the 3.5 mm output. Power the unit via the same USB connection. According to the supplied instructions, first connect and switch on the amplifier, then install the VIA driver if required, and finally restart the computer to complete driver installation. After the driver is installed, select the InLine AmpUSB as the audio output device in your operating system or audio player and play back high-resolution PCM or DSD files as supported.

Recommendations

Do not use the website 'Drivers-Download' mentioned in the delivery instructions; that site is unaffiliated with the manufacturer and has been misused for phishing. It is strongly advised to avoid that website and obtain drivers only from official InLine support channels or reputable sources.