Lehmann Audio Black Cube, Black Cube Buffer Brochure

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Lehmannaudio

Black Cube Buffer

Cable driver/ output enhancer

The name Lehmannaudio has long
become synonymous for producing
cost effective state of the art audio
electronics. The Black Cube Buffer
is a high end cable driver that satis­fies the highest demands and is the
solution for practically all problems
with long cables or different levels.

Many music lovers have an affinity to puristic
concepts like the so called passive preamps. Alt­hough there are certain qualities, these setups
are facing problems with long cables. The sound
is often too soft and weak. Highs lack trans­parency and bass impact is also dissatisfying.
This is mainly caused by a high source impedance
of the passive attenuators.

The Black Cube Buffer is the ideal partner:
Due to the low impedance output driver circuit
realized as high current Class A design without
global negative feedback the music flows unalte­red, artefact free and with all its inherent energy
to the next following input.

Another application for the Black Cube Buffer is
the field of biamping where low efficiency woofers

Technical data:

Input impedance: 47 KOhms

Maximum gain: 0dB, 10dB, 20dB

switchable underneath
the unit

Maximum input level: 9V at gain 0dB
900mV at gain 20dB

Maximum output level: 9V RMS

are combined with much higher efficiency midrange
drivers and tweeters like for example horn systems.
In many cases the gain reserve for the woofer is
insufficient. Here the Black Cube Buffer can be
effectively used for level optimization.

Weak output stages of any line sources can greatly
benefit from the Black Cube Buffer. Especially
variable outputs of CD-players are very often dimen­sioned inferior. This is mostly the reason why a
seemingly puristic combination of CD-player, power
amp and speakers is sounding dissatisfactory in so
many cases.

With the Black Cube Buffer such setups can turn
into highlights!

Output impedance: 60 Ohms

Power dissipation: <5W, internal, regulated power

supply

Dimensions: 280 x 110 x 44mm³
(case only)

Connectors (audio): gold plated RCA connectors with
Teflon isolation

P R O D U C T I N F O R M A T I O N

Frequency response: 10Hz (-0.3dB)

to 60 kHz (-1dB)

Signal to noise: >95dB at 0dB gain

THD: <0.001%

at 6mW/300 Ohms

Channel separation: >70dB/10kHz

Lehmannaudio Dipl.-Ing. Norbert Lehmann Mozartstr. 16a 51145 Koeln Germany Tel.: [phone] Fax: [phone]

email: [e-mail] Web: www.lehmannaudio.de

Lehmannaudio and Black Cube are registered trade marks. Technical changes may apply without prior notice.

Weight: app. 1.4 kg