Lehmann Audio Linear II Pro – Studio Headphone Amplifier
 
The ideal solution for recording, mixing, and mastering applications in the studio!
 
The Linear II Pro is one of the finest headphone amplifiers designed for professional studio use. Based on our flagship Linear model, this meticulously crafted device is tailored to meet the demands of top-tier audio and mastering studios.
 
If you need a reliable tool for consistently precise headphone work, the Linear II Pro will perform at its absolute best. This reference incarnation of the Pro Audio version of our most well-known and popular headphone amplifier allows you to assess your recordings more accurately, reliably, and quickly than ever—independent of speakers, room acoustics, and ambient noise. This enables you to focus exclusively on what truly matters: your recording, with even less listening fatigue.
 
"I would, without hesitation, call this a 'milestone' or 'breakthrough' in headphone playback."
— Fritz Fey, Studio Magazin
 
Fewer Artifacts – Faster Results
 
The Linear II Pro is equipped with an innovative LowZ Copper PCB. While this technology is nearly ten times more expensive than conventional circuit boards, the significantly higher copper thickness results in a measurably improved signal-to-noise ratio (S/N ratio) and fewer artifacts. This allows you to achieve reliable results more quickly in your daily work. Especially in mastering, where billing is done per track rather than per hour, this advantage quickly becomes evident.
 
Quality for Your Studio Work
 
The Linear II Pro immediately impresses with its exceptionally artifact-free, linear reproduction, consistently realistic spatial imaging, and high impulse accuracy. It effortlessly drives even impedance-critical headphones to their absolute sonic peak.
 
The amplifier features a balanced, overload-resistant stereo input equipped with Neutrik combo sockets. It supports both balanced and unbalanced signal sources. Two parallel headphone outputs on a discrete Class A transistor output stage power two headphones of the same impedance with ease and authority.
 
"I would have thought such an improvement step was impossible if I couldn't compare it directly."
— Friedemann Tischmeyer, Mastering Engineer
 
Headphones: No More Listening Fatigue
 
Once you have extensively tested our reference device, you will likely find yourself using headphones much more frequently than before. The high level of detail accuracy allows you to work at lower listening volumes while maintaining full concentration for longer periods. This, in turn, helps protect your entire auditory system by reducing the overall listening volume.
 
Lehmann Audio Linear II Pro – Specifications
 
Input Impedance: 18 kOhm, balanced
Gain: 0 dB / 10 dB / 18 dB / 20 dB
Frequency Response: 10 Hz (-0.3 dB) to 35 kHz (-1 dB)
Signal-to-Noise Ratio (unweighted): 108 dB at Gain 0 dB
Total Harmonic Distortion (THD): > 0.003% at 13 mW / 300 Ohm
Channel Separation: > 70 dB at 10 kHz
Channel Imbalance: < 0.3 dB at maximum volume
Output Power:
200 mW / 300 Ohm
400 mW / 60 Ohm
Output Impedance: 5 Ohm
Maximum Output Level: +20 dBu
Audio Connections:
Input: Neutrik XLR combo sockets with gold-plated contacts
Output: Neutrik 6.35 mm jack sockets with gold-plated contacts
Mains Voltage: 230 V / 50 Hz AC
Fuse: 250 mA T
Power Consumption: Approx. 10 W
Dimensions (W x D x H): 110 mm x 280 mm x 50 mm
Weight: 1.5 kg (net)