The Alva Duo is a phono preamplifier compatible with mobile magnet cells and mobile coil. It incorporates a 6.35 mm helmet amplifier, a subsonic filter and an automatic shutdown.
Two distinct RCA entries host a mobile magnet or mobile coil. In mm the gain is 39 dB of 47 kohms, in MC it rises to 60 dB on 100 ohms. The sensitivity increases from 3.35 mV to 305 UV depending on the selected entrance. A mass terminal receives the ground wire of the plate.
A helmet amplifier is integrated behind the jack jack 6.35 mm from the facade. It allows you to listen to a disk without turning on the chain. A front panel selector switches between the MM and TM entries.
The surface mounting card preserve the signal pure through the entire path. The RIAA curve is held at +/- 0.3 dB of 30 Hz to 20 kHz, or twice as greenhouse only on the solo. The distortion remains in 0.0025% in mm.
The diet has downgrade outside the audible frequencies and spreads the snoring of the transformer. The consumption cap has 10 W. The balance adjustment in the rear side rattrains a cell's equilibrium, and the device stops alone after twenty minutes of inactivity.
Data sheet
Specific References
DualCS 618Q quartz-stabilized direct-drive turntable: automatic tonearm lift and stop, dual-gimbal tonearm, Ortofon 2M Blue cartridge, and heavy cast-aluminum platter. Tracking error within ±0.07%.
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