Lehmannaudio Linear USB II

Headphone Amplifier. Made In Germany.

Since 2004, the Linear has been delighting music enthusiasts who demand top-notch performance from their hi-fi amplifiers, even when using headphones. But can this remarkable success story be surpassed? The answer is a resounding yes, and here's how!
Introducing the Linear USB II, equipped with the latest generation digital-analog converter and an extensively improved analog board that incorporates cutting-edge Low-Z Copper technology. Prepare to experience robust, impactful bass and exquisite clarity across the entire range of frequencies. Your headphones will no longer be seen as a mere temporary fix but as a true audio solution.

Digital-analogue converter
Digital inputs 1 x USB B
Sampling rate up to 384 Khz
Resolution up to 32 bits
Formats PCM, DOP 128, FLAC, MP3, WAV
Chipset ESS Sabre K2M
Analogue filter Silver Mica capacitators
Max. output level DAC1.8 V eff.
Special feature The analogue input is automatically activated, when no digital signal is recognised


The Perfect Combination

Catering to your every need, the Linear USB II offers an exceptional listening experience with its three gain settings, ensuring compatibility with a wide range of headphones and various audio sources. By seamlessly integrating a headphone amplifier and preamp, it combines the meticulously chosen components and advanced circuitry of our beloved Linear model with the digital realm.

Now you can indulge in your music collection, whether it's stored on your PC, Mac, or even your mobile phone, with unparalleled audiophile quality. The Linear USB II effortlessly detects incoming USB audio streams, eliminating the need for an input selector switch. Additionally, our new champion is equipped to simultaneously accommodate two headphones, allowing you to share the joy of your music. Furthermore, it serves as a streaming preamp, injecting incredible energy into your active loudspeakers, enabling them to perform with remarkable vibrancy.

With the help of 3S damping feet, the Linear USB II is effectively isolated from its base, resulting in a serene listening experience. In any situation, expect nothing short of an extraordinary sound that relentlessly pursues perfection – that's the essence of our Linear USB II.


Input Impedance: 47 kohms

Maximum Gain: 0 dB, 10 dB, 18 dB, 20 dB selectable via DIP switches

Frequency Response: 10 Hz (-0.3 dB) to 35 kHz (-1 dB)

Signal to noise ratio: > 100 dB at gain 0 dB

THD: < 0.001 % at 6 mW/300 ohms

Channel separation: > 80 dB at 10 kHz

Output Power: 400 mW/60 ohms, 200 mW/300 ohms

Output impedance: pre-out 50 ohms, phones out 5 ohms

Connectors audio: Neutrik headphone jacks with gold plated contacts 1 x pre-out 2 x phones out gold plated RCA sockets with teflon insulation

Power Consumption: 15 W through internal, regulated power supply

Special feature: PC board in Low-Z Copper technology vibration-absorbing 3S Device Feet

Product Type: Headphone amplifier

lwh: 110x280x44

Weight: 1500g

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