Linear Pro

Linear Pro

Precision tool for sound professionals

Try the Linear Pro now near by

Linear Pro info sheet

The Linear Pro belongs to the league of first-class headphone amplifiers designed for professional studio applications. Based upon our best-selling Linear model, this device manufactured in small numbers is tailored to the needs of recording and mastering studios, convincing not only in numerous broadcasting companies and recording studios by its performance and reliability.

"What I hear with it, is on the record – and that is, what I want."

— Maarten de Boer, Mastering engineer

This fits you to a T: reliability and professionalism

If you often do recordings under difficult spatial conditions and need a reliable tool for an untiringly precise headphone work, the Linear Pro will perform at its best. The pro-audio version of our best-known and most popular headphone amp will support you with your daily studio routine and let you judge your recordings in a precise and dependable manner – irrespective of loudspeakers, room acoustics and ambience noises. Thus you can concentrate solely and tirelessly to the essentials: your recording.

"The linear is phenomenal. A whole new world of headphone work!"

— Friedemann Tischmeyer, Mastering engineer

Top-notch quality for your studio work

Due to its superb circuit design and selected components, the Linear Pro meets all requirements of professional users who are convinced by its low-artefact linear reproduction, its downright realistic spatial imaging and high transient accuracy. Furthermore, even headphones with a critical impedance are easily spurred on to absolute top performance. The Linear Pro’s balanced high headroom stereo input is equipped with Neutrik combo sockets which allow to connect both balanced and unbalanced signal sources.

Technical Data

The impressing technical details of the Linear Pro.

Linear Pro
Input impedance
18 kohm, balanced
Gain settings
0 dB/10 dB/18 dB/20 dB
Frequency response
10 Hz (-0.3 dB) to 35 kHz (-1 dB)
Signal to noise ratio (RMS unweighted)
> 90 dB at gain 0 dB
> 0.003 % at 13 mW/300 ohms
Channel separation
> 70 dB at 10 kHz
Channel mismatch
< 0.3 dB at maximum volume
Output power
200 mW/300 ohms
400 mW/60 ohms
Output impedance
5 ohms
Maximum output level
+20 dBu
Connectors audio
In: Neutrik XLR combo jacks with gold plated contacts
Out: Neutrik 6.35 jacks with gold plated contacts
Power consumption
app. 10 W
Outer dimensions W x D x H
110 mm x 280 mm x 50 mm
1.5 kg netto


The Linear Pro is available with two faceplate finishes.

Linear Pro Aluminium (silver)

Aluminium (silver)

Aluminium (silver)Aluminium (black)


Available upgrade options for the Linear Pro

Order form

Order form

Upgrade for the analogue board

The new Linear II mainboard is equipped with the improved components of the Linear SE board and built using a special low-impedance technology (low-Z copper) which raises the price of the naked PCBs by a factor of about 10. But the effort is worthwhile. This technology results in even better dynamic values, but above all it produces once again a significant increase of the sonic performance: transient response and spatial imaging are even closer to the original.

Here’s how

Download the order form. Print it out and send the filled out form together with your device to the given address. Within a few weeks you’ll get your modified device back and can pay conveniently by invoice.


Upgrade with the new low-Z copper analogue board starting from 499 EUR
Optional extra: installation of 3S device feet plus 99 EUR
Shipping via UPS within Europe included
Payment method: invoice

Order your upgrade now


With our accessories you can get even more use out of our products.

Mounting Kit

Mounting Kit

With our mounting kit your Linear Pro mounts quite easily and inconspicuously on furniture and walls.

See our brochure for full details (PDF)


Studio Magazin

"In my opinion, the Linear headphone amplifier by Lehmannaudio belongs to the reference class of its kind. It creates a relaxed, open, neutral and detailed acoustic image which will hardly allow any fatigue effects to sneak in."

Read the whole article (PDF)


"When I found Lehmann Audio on the internet, my decision was rapidly made, and the Black Cube Linear sounds great, it’s a basic element in the flight case when we record outside Motor Music."

Read the whole article (PDF)