Lehmann Audio Black Cube Decade Phono Stage

The Lehmann Audio Black Cube Decade Phono Stage is an ambitious phono stage that forges a link between the Black Cube series and the top-of-the-line model Silver Cube: this is our Decade. However, it is rather a high flyer than a stopgap. Owing to its cutting-edge technology, it has the gift to spoil even the most demanding music enthusiasts. And this with a flawless sound which points far beyond its price category.

Lehmann Audio selected the components for the Decade with utmost care. The input stages ensure an amazingly low-noise reproduction and it’s no surprise that they can also be found in very high-grade mixing consoles and microphone preamps from makers of professional studio electronics. The ultra-precision passive RIAA equalisation network lies between two linear gain stages and is realised using low-loss precision MKP capacitors. That way transients, dynamics and sonic timbres will get straight to the listener in a genuine manner.

Always with your musical enjoyment in mind, Lehmann Audio have also developed the PWX II power supply which lets you benefit from a further enhanced performance. This power supply that is equipped with inductive elements at critical points feeds the Lehmann Audio Black Cube Decade Phono Stage with very low-noise DC voltages. Like in the Lehmann Audio Silver Cube, it is linked to the audio device via a shielded cable with Neutrik connectors. Since the PWX II power supply is downward compatible with the PWX power supply, the audio devices of the Lehmann Audio Black Cube series may be connected as well. For this purpose we have provided a dedicated second output.

Of course, with its manifold setting options the Lehmann Audio Black Cube Decade Phono Stage, too, is fully custom-tunable to your individual needs. Thus e.g. even exotic MC systems can be connected hassle-free to this outstanding phono stage – the 66 dB maximum gain is definitely sufficient in any case. To give even the most exceptional MC system a matching termination, we have included a free slot for a custom impedance. Furthermore, you have the possibility to individually adjust the input capacitance values. The discrete class A output stage with its high quiescent current delivers an open, swift sound image and can easily drive longer cables as well.

The switches for the gain adaptation plus a switchable “soft bass rolloff filter” are conveniently operated via toggle switches located on the front panel. The actual functions are controlled by internal high-quality relays.

Specification

Sensitivity for output level 775 mV/ 0 dB (with activated high gain switch) – MM: 3.8 mV/1 kHz; MC: 0.38 mV/1 kHz
Gain 1 kHz – MM: 46 dB; MC: 66 dB
Maximum input level 1 kHz – MM: 45 mV; MC: 4.5 mV
Signal to noise ratio (RMS unweighted) – MM: 78 dB; MC: 69 dB
Gain – 36 dB, 46 dB, 56 dB, 66 dB
Channel separation – > 80 dB at 10 kHz
Input impedance – 47 kohms, 1 kohm, 100 ohms, 1 x custom load
Output impedance – 5 ohms
Input capacitance – 47 pF to 1,370 pF
Channel mismatch – typ. max 0.5 dB
Bass filter – 50 Hz, 6 dB/oct.
Power consumption – app. 13 VA
Outer dimensions W x D x H – Audio section: 110 mm x 280 mm x 50 mm, PWX II power supply: 110 mm x 280 mm x 50 mm
Weight – Audio section: 0.87 kg, PWX II power supply: 1.56 kg