Lehmannaudio Black Cube Decade HiFi Phono Preamplifier Black

Lehmannaudio Black Cube Decade

Hi-End MM/MC Phono Preamplifier with Separate Power Supply

The Lehmannaudio Black Cube Decade represents the pinnacle of the German brand's manufacturing philosophy: uncompromising design, carefully selected components, and a completely separate dedicated power supply.

The input stages employ superior-quality components normally reserved for much higher-end models, while the precision RIAA equalization circuit is positioned between two linear gain stages with high-tolerance MKP capacitors.

With a maximum gain of 66 dB, the Black Cube Decade can easily handle even the most demanding MC cartridges. For the most discerning audiophiles, it also offers extremely fine adjustments of impedance and input capacitance, allowing virtually unlimited adaptation to any cartridge.

Designed for professional-level listening, this phono preamp by Norbert Lehmann integrates a “Soft-Bass Roll-Off” filter and a gain control directly accessible from the front panel. All controls use professional-quality relays, guaranteeing reliability and signal purity.

The PWX II external power supply, developed specifically for the Black Cube Decade, ensures optimal operating conditions thanks to anti-interference filters positioned at the most sensitive points of the circuit. As in the flagship Silver Cube model, the connection between the audio unit and the power supply is via a shielded cable with a professional Neutrik connector.

Main features

Hi-End double-chassis MM/MC phono stage

Infinite possibilities for matching the cartridge impedance

Class A output stage without negative feedback

RIAA equalization with paper capacitors and MKP of the highest precision

Low-noise metal film resistors

Front-side selectors for Soft-Bass filter and gain

Gold-plated RCA connectors for input and output

Dedicated external PWX II power supply, to eliminate any magnetic interference

Technical specifications

Sensitivity for output level 775 mV / 0 dB

MM: 3.8 mV / 1 kHz

MC: 0.38 mV / 1 kHz

Gain (1 kHz):

MM: 46 dB

MC: 66 dB

Selectable gains: 36 / 46 / 56 / 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

Channel separation: > 80 dB at 10 kHz

Input impedance: 47 kΩ, 1 kΩ, 100 Ω + 1 x custom load

Input capacitance: 47 pF to 1,370 pF

Output impedance: 5 Ω

Channel mismatch: typ. max. 0.5 dB

Bass filter: 50 Hz, 6 dB/oct

Power consumption: approx. 13 VA

Dimensions and weight

Audio section: 110 × 280 × 50 mm – 0.87 kg

PWX II power supply: 110 × 280 × 50 mm – 1.56 kg