Lehmann Audio Black Cube Headphone amp

Lehmann Audio Black Cube Headphone amp

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Dynamic headphones vary far more than people realise. For the same sound pressure level the power needed with different headphone models can vary upto a factor of about 500! Impedances can be different to a factor of more than 20!

This is the reason why different headphone models have very individual requirements of the amplifier driving them in terms of voltage and current.

The selectable gain (0dB, 10dB, 20dB) of the Black Cube Linear effectively optimises the output level of the zero global feedback Class A output stage. Practically all high quality dynamic headphones available will show their best possible performance, no matter if you have an easy to drive low impedance pair of headphones or a difficult pair of 600 Ohm studio cans.

Carefully selected top notch components and a highly sophisticated circuit design guarantee top performance listening pleasure. Now you can hear that ultra transparent sound and the explosive dynamics formerly known only from electrostatic headphones. An overdimensioned power supply with a huge magnetically and statically shielded toroidal transformer is included internally allowing a power cable of your choice to be directly connected to the unit.

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 one can think of. All audio connectors including two Neutrik headphone jacks come with gold plated contacts.

The faceplate and the massive milled aluminium knob for the smooth running ALPS high grade volume control are available in anodised black or silver.


Input impedance:   47 KOhms
Maximum gain:    0dB, 10dB, 20dB switchable underneath the unit
Frequency response:  10Hz (-0.3dB)
      to 35 kHz (-1dB)
Signal to noise:   >95dB at odB gain
THD:      <0.001% at 6mW/300 Ohms
Channel separation:  >70dB/10kHz
Output power:    200mW/300 Ohms
      400mW/60 Ohms
Output impedance:  line out 60 Ohms
      phones out 5 Ohms
Power dissipation:  <5W, internal, regulated power supply
Dimensions:    280 x 110 x 44mm sq.
      (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
Weight:     app. 1.5 kgone amp


Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25

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