The name Lehmannaudio has become synonymous for producing cost effective state of the art audio electronics and is now introducing a new member to the worldwide known Black Cube product family. The Black Cube Linear is a headphone amplifier with preamp functions - or vice versa. The different types of headphones on the market have very different requirements to the headphone amplifier driving them. The selectable gain (0dB, 10dB, 20dB) of the Black Cube Linear effectively optimizes the output of the zero global feedback Class A output stage for practically all headphones available, no matter if you have an easy to drive low impedance pair of headphones or an ineffective pair of 600 Ohms studio cans. Carefully selected top notch components and a highly sophisticated circuit design guarantee listening pleasure on the highest level possible. Now you can hear that ultra transparent sound and the explosive dynamics formerly known only from electrostatic headphones. An over dimensioned power supply with a huge magnetically and statically shielded toroidal transfer is included internally allowing a power cable of your choice to be directly connected to the unit.
The faceplate and the massive milled aluminum knob for the smooth running 27mm ALPS high grade volume control are available in anodized black or silver. Wooden face plates come as an option. For stereo setups with just one source like a CD player or a turntable with a phono stage the Black Cube Linear is the simplest and most effective active preamp you can think of. All audio connectors including the two Neutrik phone jacks come with gold plated contacts. No external Y-adapter is needed! To to get the best out of your headphone you will have to try the Black Cube Linear.
The rear panel has four gold-plated RCA terminals (one input pair, one output pair), the USB connector and a 3.5mm stereo minijack socket for an iPod.
I can only classify it as "Highly Recommended." If you're in the market for a high-end headphone amp, you must audition this piece. It's a winner.
As a headphone amplifier it utterly outperforms anything you'll get on a computer tower.
Listening through the speakers (so using the Lehmann as a USB DAC and preamp), the sound quality was again the equal of a good CD player with uncompressed source music, and again a revelation in allowing compressed files the opportunity to perform to their full ability. With the bonus of allowing hi-fi output of DVD soundtracks (and any other computer audio), plus the handy headphone option, this is an unassuming product capable of massively upgrading the sound from your computer music collection.
|Input Impedance||40k Ohms|
|Maximum Gain||0dB, 10dB, 20dB switchable underneath the unit|
|Frequency Response||10Hz (-0.3dB) to 35 kHz (-1dB)|
|S/N Ratio||Greater Than 95dB at 0dB gain|
|THD||Less Than 0.001% at 6mW/300 Ohms|
|Channel Separation||Greater Than 70dB/10kHz|
|Output Power||200mW/300 Ohms 400mW/60 Ohms|
|Power Dissipation||Less Than 5W, internal, regulated power supply|
|RIAA Filter||passive equalization between the linear gain stages|
|Interchannel Mismatch||typical 0.5 dB|
|Power Consumption||Less Than 3W; external PWX power supply|
|Dimensions||280x110x44mm cubed (case only)|
|Connectors (audio)||Neutrik phone jacks 6.35mm with gold plated contacts - 1x parallel to line out - 1x line out muting
Gold plated RCA connectors with Teflon isolation
|Front Colors||Black anodized aluminum|