When it was marketed in 1995, Lehmann Audio’s Black Cube soon became a true legend for analogue lovers. This Lehmann Audio Decade phono preamp clearly aims to bridge the gap between the great Black Cube SE II and the manufacturer's benchmark Silver Cube…Its design with two equally sized units make it immediately recognisable. They boast a beautiful brushed aluminium front panel with a natural or black finish. The housing and power supply housing are crafted in a special non-magnetic aluminium alloy that has undergone antiresonance treatment to minimise microphonics. The circuit has two new input stages inspired by the professional industry. It uses the same components as those used on micro preamps and studio consoles.
The RIAA curve equalization and correction are entirely passive. It uses MKT capacitors and resistors with high precision, low tolerance and low noise metal layers. The front panel features three micro-switches for the selection of the bass filter (subsonic), gain and MM/MC position respectively. They act on precision relays that switch their values. For compatibility with ALL cartridges, the gain and impedance selection are completely separate and adjustable. To allow the system to operate perfectly, Lehmann Audio has added a mighty PWX 2 power supply unit! It is oversized with respect to its role and is associated with a great 30 VA toroid transformer that typically features a grounded winding, for full primary and secondary isolation. Filtering is done by high value chemical capacitors and a precision regulation circuit, which delivers a stable voltage. This power supply unit is key to the musicality and performances of the Lehmann Audio Decade.
When switched on for twenty hours and following a break-in period of a few days, this phono preamplifier boasts rare musicality! For this price, the transparency is unprecedented and often superior to higher end models. Only battery powered phono preamps seem a match to this Lehmann Audio Decade phono preamplifier in terms of criteria. Amazing musician and instrument placement. The bass is very deep with an amazing consistency and articulation. The dynamics span over the entire frequency response with incredible nuance. It is assertive and strong when necessary, but it can also be subtle on the most delicate pieces. The sound stage is very wide and deep and every instrument section is in its place. The quality emanating from this Lehmann Audio Decade is so good that it can be paired with the most efficient cartridges on the market that are work ten times its price!
Lehmann Audio dedicated phono preamp over 15 years of its expertise and passion to this preamplifier at the service of music and analogue sound. This Lehmann Audio Decade can be considered as a benchmark and one of the very best phono preamplifiers that we have ever heard to date (irrespective of technology and price). Amazing value and music for money!
Hi-Fi News - Highly Commended - 2010 Franck
MM, MC - Gain selection: 36, 46, 56, 66 dB
Impedance: 47K, 1K, 100R
Subsonic filter: 6 dB/Octave at 60hz
RIAA equalization: Passive
Channel separation: 80 dB
Signal-to-noise ratio: 71 dB MM/63 dB MC
Power supply: outboard
Dimension: 114x124x44 mm
Power supply dimension: 233x93x45 mm
Preamplifier weight: 400 g
Power supply weight: 1,000 g