Lehmannaudio Silver Cube MM/MC Phono Preamplifier + PWX II Power Supply

Lehmann Audio Silver Cube + PWX II – High-End MM/MC Phono Stage

Absolute excellence in analog audio

Designed without compromise and aimed at the highest end of the market, the Lehmann Audio Silver Cube represents one of the finest and highest-performing phono stages available today. It combines an elegant, minimal design with precision engineering, offering performance close to absolute perfection and full compatibility with any cartridge and preamplifier combination.

Design and construction

The chassis is machined from solid aluminum and features a robust and refined silver anodized finish. A discreet blue LED stands out on the front, a symbol of its aesthetic essentiality.

Internally, the circuitry is completely dual mono, with a doubling of the audio paths to ensure optimal channel separation and absolute sonic purity.

PWX II Power Supply

The Silver Cube is powered by the external PWX II unit, specially designed to maximize the performance of the phono pre-amp section.

The power supply uses a 120 VA toroidal transformer with ultra-fast recovery diodes and anti-interference devices at critical points. The connection is via a shielded cable with a professional Neutrik connector, ensuring maximum protection from noise and electromagnetic interference.

Performance and flexibility

On the rear panel there are four gold-plated WBT connectors and a row of DIP switches that allow fine adjustment of load and capacitance.

The minimum adjustable resistance value is 80 Ω, but the internal part allows the connection of custom values.

There are also two switches per channel for adjusting the gain, up to a maximum of 66 dB, corresponding to a multiplication factor of 2000x.

Listening experience

The Lehmann Audio Silver Cube offers a transparent, natural and engaging sound, capable of reproducing the warmth and musicality typical of the most authentic analog.

It is the ideal tool for both the most demanding audiophile and the music collector looking for an absolute reference for their system.

Main features

Hi-End MM/MC phono stage in two chassis

Infinite possibilities for matching the cartridge impedance

Class A FET output stage without feedback

Independent dual-mono circuitry

Soft-Bass and Gain selectors on the rear panel

RIAA stage with ultra-precision Mundorf MKP capacitors

Low-noise metal film resistors

Gold-plated RCA inputs and outputs

External PWX II power supply for interference isolation

Military-grade aluminum chassis, machined from solid

Technical specifications

Parameter Value

Sensitivity (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

Maximum input level (1 kHz) MM: 50 mV – MC: 5 mV

Signal-to-noise ratio (RMS unweighted) MM: 78 dB – MC: 69 dB

Selectable gains 36 / 46 / 56 / 66 dB

Channel Separation >80 dB at 10 kHz

Input Impedance 47 kΩ, 1 kΩ, 100 Ω + custom load

Output Impedance 5 Ω

Input Capacitance 47 pF – 1370 pF

Channel Mismatch typ. 0.1 dB

Bass Filter 50 Hz, 6 dB/oct

Power Consumption 15 VA

Audio Section Dimensions 300 x 195 x 48 mm

Power Supply Dimensions 112 x 312 x 80 mm

Weight Audio Section: 2.25 kg – Power Supply: 2.8 kg

PWX II Power Supply Features

120 W Toroidal Transformer

Isolation Choke between Primary and secondary

Ultra-fast rectifier diodes and secondary filter

Low-noise voltage regulators

Neutrik gold-plated connectors

Ultra-fast charge/discharge capacitors

Two separate power outputs

? Lehmann Audio Silver Cube + PWX II: the ultimate expression of analog sound, without compromise.