Lehmann Audio Decade Manual

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The Decade Phonostage

Lehmann Audio has built a reputation of unrivaled customer satisfaction on the sound and build quality of their phono stages. The ambitious Decade effectively fills the gap between the Black Cube SE II and the Lehmann Audio reference phono stage, the Silver Cube. In the Decade, like in all Lehmann Audio devices, top notch technology is used that normally can be found only in price ranges far above.
  1. Lehmann Decade Phono Preamp. Quick View Lehmann Black Cube SE II Phono Preamp. Quick View Lehmann Black Cube SE Phono Preamp. Quick View Lehmann Black Cube Original Phono Preamp. Quick View Lehmann Black Cube Statement Phono Preamp.
  2. Lehmann Audio Decade phono preamp Under that $2k price range I found everything inferior and not up to my standard. No positive experience with Rega in general. Heard one of their models of the previous generation and it was lacking a lot to my ears but it’s a very well respected brand with cult like loyal followers. The RP8 looks cool 😎.

Audio Research PH6 / Lehmann Decade Phono Amps (Moderator: Admin) Pages: 1 Author: Topic: Audio Research PH6 / Lehmann Decade Phono Amps: chowbotak Posts: 566 I love YaBB 1 Gold! Box, manual, accessories, certificate, receipt including screwdriver intact.

The input stages of the Decade can also be found in top notch mixing consoles and high class microphone preamps of professional studio electronics. The highly accurate, passive RIAA equalization network is placed between two linear gain stages and uses precision MKP capacitors. This results in a very stable soundstage reproduction and pin point localization of instruments.
The maximum gain of 66 dB is well enough for even very exotic low output MC cartridges. Impedance load adaption is practically infinite as with all Lehmann Audio phono stages: there is a free slot for a custom impedance so that every existing MC cartridge on the market can be loaded properly. Input capacitences are adjustable as well.

Soft Bass Roll-Off Filter and PWX II Power Supply

The Decade is the first phono stage by Lehmann Audio that offers a 'Soft-Bass-Rolloff-Filter' and gain selections accessible via toggle switches at the face plate. Both, gain and filter functions, are executed by studio grade relays inside the unit.
The Decade is powered by the PWX II, a power supply especially developed for the unit which is downward compatible with the PWX. This means that Black Cube audio sections can also be connected. The second power outlet at the PWX II is made especially for that purpose. The PWX II power supply with chokes at critical places powers the Decade with very clean DC power and - like the Silver Cube - is connected to the audio section via a shielded cable with Neutrik XLR plugs.
Technical:
  • Input Stage: Dual mono Microphone preamp Chip newest generation
  • Gain settings: 36 dB, 46 dB, 56 dB, 66 dB
  • Max. gain: 66 dB
  • Internal impedances (selectable): 47 k, 1 k, 100 R
  • Onboard slot for custom impedance
  • Internal input capacitance and cap type: 47 p, 100 p, 220p, 1 n, KP 1 % and combinations (47 p always active)
  • Soft Bass Rolloff filter (toggle switch on face plate)
  • High Gain (toggle switch on face plate)
  • RIAA filter caps: MKP
  • Bass coupling after RIAA: MKP
  • Second gain stage: Dual Mono Burr Brown OPA 134
  • Discrete Output buffer for Zero global feedback (Bipolar Class A)
  • Power supply features on audio board: LC Pi-Filter, RC-Filters with extensive electrolytic bypass

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