
FCC Warning: This equipment generates and can radiate radio frequency
energy and if not installed and used correctly in accordance with our
instructions may cause interference to radio communications or radio and
television reception. It has been type-tested and complies with the limits set out
in Subpart J, Part 15 of FCC rules for a Class B computing device. These limits
are intended to provide reasonable protection against such interference in
home installations.
EEC: This product has been designed and type-tested to comply with the limits
set out in EN55013 and EN55020.
This guide was produced by Human-Computer Interface Ltd,
http://www.interface.co.uk

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TECHNICAL SPECIFICATION
Gain MM: 35.5dB, 41.5dB with jumper
MC: 54dB
Output impedance 100Ω
RJAA accuracy ±0.2dB, 50Hz – 20kHz
Signal-to-noise MM: -80dB
MC: -75dB
Power consumption 9W
Dimensions (WxDxH) 215 x 275 x 75mm
Weight 4kg

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POWER CONNECTION
Warning: Before connecting power check that the required supply voltage,
indicated on the back panel, corresponds to your local AC supply. If a
different voltage is stated on the type plate do not connect the amplifier to the
mains power, and seek advice from your dealer.
Connect the mains power using the enclosed mains cable.
Note: Always disconnect the mains power before connecting or
disconnecting any of the cables.
OUTPUTS
Connect the R20 to the preamplifier or processor using the left and right phono
outputs using high-quality stereo phono leads.
INPUTS
Connect the left and right phono inputs to the cartridge outputs from your
turntable. Connect the ground terminal to the ground connection from your
turntable.
INPUT IMPEDANCE
10 •
20 •
50 • • 100
• 200
• 47k
LEFT
OUT
MM MC
GND
IN
]F ]G ]H
]C ]D ]E]A ]B
]E Left input.
]F Input impedance selection.
]G Ground terminal.
]H Mains power input and fuse.

]A ]B
INCREASING THE GAIN IN MM MODE
• Fit shorting links in positions ]A and ]B on the circuit board:
We recommend that your dealer carry out this operation.

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O
outputs .................................................... 3
T
technical specification .............................. 1