The Lehman audio Black Cube phono stage with external power supply. This phono stage is compatible with practically all available cartridges on the market from High Output MM to the lowest output MC cartridges. Apart from the standard switch settings there is one onboard slot that can be fitted with a custom impedance to supply perfect termination even for the most exotic cartridges. Since 2006 there is a separate hard wire custom impedance slot that needs no DIP-switch to be activated.
The newly developed input stages used in the Black Cube can also be found in top notch mixing consoles or in well known professional microphone preamps. The entirely passive RIAA equalisation network is terminated with high precision MKP capacitors. All resistors are of the low noise metal film variety. The switches for gain and load settings have gold plated connectors.
Because of the small outer dimensions the Black Cube can be placed next to the turntable. This minimises loss due to cable lengths. The low noise regulated external power supply is connected with Neutrik XLR connectors to the dedicated DC power supply.
The cable between power supply and audio section is shielded. The cases of both the power supply and the audio section are made of nonmagnetic materials and the case of the audio section is even equipped with a top cover coated with a special anti-resonance treatment.