Lehmann Audio Linear D II Headphone Amplifier

The Lehmann Audio Linear D II is a high-end headphone amplifier and streaming pre-amplifier for users who also want to get the best sound from their digital audio sources.

What makes the Linear D II so special is its totally revised analogue circuitry. Featuring a discrete Class A output stage, for an open and natural sound, high-grade Low-Z Copper technology across the PCB circuitry and specially selected components – like the oversized internal power supply and low-loss MKP precision capacitors – the new model delivers physical, punchy lows and startling resolution in an open and natural soundstage over the entire frequency bandwidth, allowing your headphones to fulfil their highest potential.

For easy system matching, the Lehmann Audio Linear D II features three Gain settings up-to 20dB and also benefits from two Neutrik headphone sockets with gold-plated contacts, which can be used simultaneously. The Left headphone output mutes the rear line-level RCA output when a headphone is connected. There is also an additional analogue RCA input for connecting more traditional line-level sources, but it’s main appeal is in the high-resolution digital audio inputs.

The Lehmann Audio Linear D II guarantees the highest performance from your existing digital sources. With Optical (Toslink) and Coaxial (RCA 75Ω) inputs, it automatically detects the playing audio (Optical input is prioritised) and converts the raw digital data using a sophisticated ESS Sabre K2M DAC chip.

The Linear D II also functions very well as a streaming pre-amplifier for a full hi-fi system (when Gain is set to 0dB and no headphone is connected). With the auto-input detection and sophisticated internal layout, it offers a simple-yet-high-end solution that can easily drive long cables toward a power amplifier or active speakers.

The Lehman Audio Linear D II is truly a reference class pre-amplifier for all dynamic headphones. Utilising a sturdy metal housing with SSC damping feet, for effective decoupling from environmental factors, the aluminium faceplate is available in Black, Silver or Chrome finishes.

Technical Specifications 

Digital Inputs: 1x Toslink
1x RCA (75Ω)
Sample Rate Digital: 32kHz
44.1kHz
48kHz
88.2kHz
96kHz
192kHz
Resolution: 24-Bit
Chipset: ESS Sabre K2M
Analog Filter: Silver Mica Capacitors
Max Output Voltage: 1V eff.
Input Impedance: 47kΩ
Maximum Gain: 0dB
10dB
18db
20dB (Switchable)
Frequency Response: 10Hz (-0.3dB) to 35kHz (-1dB)
Signal-to-Noise: >95dB at 0dB Gain
THD: <0.001% at 6mW (300Ω)
Channel Separation: >80dB / 10kHz
Output Power: 400 mW (60Ω)
200 mW (300Ω)
Output Impedance: Line-Out: 50Ω
Phones-Out: 5Ω
Power Consumption: 13W
Connectors: Neutrik Phone Jacks (6.35mm)
1 x Parallel to Line-Out
1 x Line-Out Muting
Gold-Plated Connectors
Dimensions: 110 x 280 x 44mm
Weight: 1500g