Cambridge Audio ALVA DUO Moving Coil & Moving Magnet Phono Preamplifier

VINYL AS IT’S SUPPOSED TO SOUND

Due to the low-level signals created by a turntable, not all hi-fi amplifiers will let you connect directly to a record player. The phono preamplifier boosts this signal to something a power amplifier can work with. The challenge at this stage though is that noise can easily be added.

This is why we’ve designed the Duo around exceptional components that deliver the warm and detailed sound that’s synonymous with vinyl, all without distorting the signal from your moving magnet cartridge turntable. The switch mode power supply improves performance by switching outside of audible frequency to drastically reduce hum and new circuit board layout uses surface-mount components to reduce noise.

VINYL. JUST FOR YOU.

If some records in your collection are a little worse for wear, the subsonic filter will help to eliminate low frequency rumbles that can be caused by imperfections within your vinyl. Combine this with the balance control for handling potential cartridge imbalances in your record player (that can cause a difference between the left and right channels) and the result is a detailed experience with accurate soundstage.

ECO FRIENDLY

The Duo phono preamplifier is green at heart with less than half a watt standby power consumption and auto power down feature if the unit isn’t used after a 20 minute period. This in turn gives the unit the same worldwide voltage for compatibility wherever you are in the world.

Specifications

MAX POWER CONSUMPTION 10W
CARTRIDGE SUPPORT Moving Magnet | Moving Coil
Gain @ 1kHz
MM: 39dB | MC: 60dB
NOMINAL OUTPUT
300mV
SENSITIVITY FOR NOMINAL OUTPUT MM: 3.35mV | MC: 305uV
EQUIVALENT INPUT NOISE (A-WEIGHTED) MM: ~0.09uV | MC: ~0.08uV
RIAA CURVE ACCURACY +/- 0.3dB 30Hz-50Hz
SIGNAL TO NOISE RATIO GROUNDED INPUTS REF.
1V output (20Hz-20kHz BW) MM: >90dB | MC: >70dB
THD+N 1kHz (20-20kHz BW) MM: <0.0025% | MC: <0.20%
INPUT IMPEDANCE MM: 47k Ohms | MC: 100 Ohms
INPUT CAPACITANCE 100pF
OVERLOAD MARGIN >30dB
CROSSTALK @ 10kHz MM: >85dB | MC: 75dB
DIMENSIONS (H x W x D) 48 x 215 x 159 mm (1.9 x 8.5 x 6.2")
WEIGHT 0.95kg (2.1lbs)