Lehmann Audio
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Features
High-grade, low-noise input stages derived from professional mixing desks
Custom-designed power supply with generous headroom for dynamic range
Universal cartridge compatibility: supports high-output MM to low-output MC
Adjustable gain and impedance with gold-plated switch contacts
Free slot for custom impedance matching for demanding MC systems
Hardwired plug-in location per channel for a direct, switch-free signal path
Compact aluminum enclosure with mechanically dampened top lid
Separate power supply unit with shielded XLR cable for placement flexibility
Advanced hum, HF, and voltage suppression modules
What's in the Box?
The classic on the pulse of time
The Black Cube is the classic among the phono preamps: since its product launch in 1995, it has enjoyed cult status with a vast number of record lovers, causing a sensation in the specialised press with its compact dimensions and marvellous sound. Since 2006, the audio pc board has been on the market in a new and greatly improved version. Quality with tradition. Right from the start, the Black Cube has enabled a new encounter with beloved music classics: owing to its excellent components and sophisticated circuit design, the sound is faithfully reproduced and with plenty of ardour, despite its tiny dimensions. The high-grade input stages of the latest generation ensure a low-noise reproduction. The custom-designed power supply provides a high headroom. Virtually all common pickup systems, from high-output MM to MC, may be connected to the Black Cube. A free slot for a custom impedance offers a matching termination even for demanding MC systems. And we have also provided an extra hardwired plug-in location per channel for an immediate and direct action with no switch. Likewise, the versatile nature of the Black Cube becomes apparent when mounting the device: you can easily place it very close to the tonearm of your turntable drive. This is enabled by the long cable between the power supply and audio section, and also by the compact dimensions of this phono stage.
Features
- low noise design
- Four different gain settings
- compatible with all common MM and MC cartridges
- precise passive RIAA equalization network for perfect transient response and channel balance
- custom impedance sockets
- additional hard-wired sockets
- non-magnetic aluminium housing with mechanically dampened top cover to avoid microphony and resonances
- RCA connectors with gold-plated contacts
- shielded cable to the power supply
Accessories (optional)
- turns into a Black Cube SE with the PWX power supply
| Parameter | Specification |
|---|---|
| Physical Specifications | |
| Outer Dimensions (W x D x H) | Audio section: 113 mm x 108 mm x 45 mm Power supply: 70 mm x 115 mm x 55 mm |
| Weight | Audio section (incl. cable to power supply): 0.4 kg netto Power supply: 0.3 kg netto |
| Technical Specifications | |
| Gain Settings | 36 dB, 46 dB, 56 dB, 66 dB |
| Input Impedance | 47 kohms, 1 kohm, 100 ohms 1 x custom load 1 x hardwire slot |
| Output Impedance | 47 ohms |
| Input Capacitance | 100 pF |
| Bass Filter | 50 Hz, 6 dB/oct. |
| Audio Specifications | |
| Sensitivity for Output Level 775 mV / 0 dB | MM: 3.8 mV/1 kHz MC: 0.38 mV/1 kHz (with activated high gain jumper) |
| Gain at 1 kHz | MM: 46 dB MC: 66 dB |
| Maximum Input Level at 1 kHz | MM: 45 mV MC: 4.5 mV |
| Signal to Noise Ratio (RMS unweighted) | MM: 71 dB MC: 63 dB |
| Channel Separation | > 85 dB at 10 kHz |
| Channel Mismatch | typ. 0.5 dB |
| Power Specifications | |
| Power Consumption | < 3 W |