Reference Class for Headphones – Unrivaled for Two Decades

The Linear is Lehmannaudio's legendary high-end headphone amplifier, trusted by professionals like WDR, TACET, Sennheiser, and AKG for years. Its exceptional clarity, detail, and control across the entire frequency spectrum make it the ideal choice for ambitious listeners who want to experience music in all its depth.
Physical, precise bass and detailed highs ensure an unadulterated, natural sound – regardless of the headphones used.

Flexible for Every Headphone System

As headphones have very different efficiencies and power requirements, the Linear offers four freely selectable gain levels:
0 dB, 10 dB, 18 dB, and 20 dB.
This allows optimal control of any headphones – from highly sensitive in-ears to high-impedance studio models. Even two listeners simultaneously benefit from the identical high-quality sound, because both outputs are connected to a discrete Class A transistor output stage with existing parallel paths.

More Than a Headphone Amplifier – Impressive as a Preamp Too

Thanks to its high-quality pre-out, the Linear is excellent as a preamplifier for active loudspeakers or power amplifiers. Its neutral-transparent properties bring active speakers to impressive vibrancy and structure.

Careful Component Selection for Maximum Sound Purity

The Linear follows the principle: Only the best in every signal path.

This includes:

• low-noise precision components
• selected transistors
• gold-plated Teflon RCA sockets
• high-quality Neutrik headphone jacks

This uncompromising selection forms the basis for its outstanding musicality and long-term stability.

Upgradeable for the Future – Linear II Analog Board

The Linear can optionally be upgraded to the newly developed Low-Z copper analog board (known from Linear SE/II).

Advantages:

• further increased dynamics
• improved impulse response
• more precise spatial imaging

This elevates even an older Linear to the level of modern SE models.

Technical Data

General

• Input Impedance: 47 kΩ
• Gain: 0 dB, 10 dB, 18 dB, 20 dB (via DIP switch)
• Frequency Response: 10 Hz (–0.3 dB) to 35 kHz (–1 dB)
• Signal-to-Noise Ratio: > 95 dB at Gain 0 dB
• Total Harmonic Distortion: < 0.001 % at 6 mW / 300 Ω
• Channel Separation: > 70 dB at 10 kHz

Power Output

• 400 mW / 60 Ω
• 200 mW / 300 Ω

Outputs

• Phones Out: 5 Ω
• Pre-Out: 50 Ω
• 2 × Headphone Outputs (Neutrik, gold-plated)
• 1 × Pre-Out

Power Supply & Consumption

• Mains Voltage: 240 V AC
• Power Consumption: 10 W

Dimensions & Weight

• 110 × 280 × 50 mm
• Weight: 1.5 kg net

Special Features

• Reference headphone amplifier with decades of professional use
• Four gain stages for perfect adaptation to any headphone
• Discrete Class-A output stage with no global negative feedback
• Two parallel headphone outputs – perfect for shared listening
• Extremely low distortion, high signal-to-noise ratio
• Can also be used as a high-quality preamplifier
• Optional upgrade to Linear II-Low-Z analog board
• Elegant aluminum front panels in silver, black, or chrome
• Uncompromising component selection for maximum long-term quality

Scope of Delivery

• Lehmannaudio Linear Headphone Amplifier
• Power Cord
• Operating Manual
• Warranty Documents

Lehmannaudio Vertriebs GmbH
Waltherstraße 49 - 51, 51069 Cologne, DE
info@lehmannaudio.com
https://www.lehmannaudio.de
0221 29 49 33 20