Engstrom MONICA Preamplifier

MONICA Mk3 Pre-Amplifier

Named after one of Sweden’s favorite singers, MONICA is a fully balanced and perfectly matching pre-amplifier for LARS, ERIC and even ARNE for an extra boost or desired bi-amping. Inside its simple design are best-in-class components and a lifetime of engineering experience.

M-Phono

As the third chassis complementing the MONICA line-stage, M-Phono is the MM/MC phono-pre-amp. Integrated into the original MONICA pre-amplifier in 2014, it is now a standalone product allowing the phono and line-stage to reach their full potential.

Key Features

• With six inputs for each channel (three balanced XLR and three unbalanced RCA connectors) and four outputs for each channel (two balanced XLR and two un-balanced RCA) MONICA works in harmony with your sound system.
• MONICA features a fully balanced line stage and no negative feedback is used in the creation of its pure, distinct sound.
• The core of the circuit is a unique two-totem-pole design in a balanced configuration, with four triode elements in each channel. Using a clever layout to separate the pure signal processing from the dirty components.

Technical Specification

INPUTS:

3 balanced XLR,
3 unbalanced RCA

INPUT IMPEDANCE:

40kΩ; All inputs
transformer-coupled

MAXIMUM PEAK INPUT LEVEL:

12V

OUTPUTS:

2 balanced XLR,
2 unbalanced RCA

OUTPUT IMPEDANCE:

XLR, 75Ω @1kHz
400Ω @20Hz;
RCA, impedance 43Ω @1kHz,
80Ω @20Hz

OUTPUT VOLTAGE:

2V

MAXIMUM PEAK OUTPUT LEVEL:

10V

TUBES IN POWER SUPPLY:

1 x 6080WC,
1 x ECC83

TUBES IN SIGNAL PATH:

4 x 5687WA

CHANNEL SEPARATION:

90dB at 10kHz

AMPLIFICATION:

6dB

FREQUENCY RESPONSE:

+0/-3dB, 10Hz to 40kHz

MAINS POWER:

115V / 230V
50Hz – 60Hz, 85VA

THD+N:

0.03% at 10V RMS output

NOISE:

-120dBv

DIMENSIONS (WxDxH):

2 units both equal
480 x 300 X 150mm

WEIGHT:

2 x 15kg

VOLUME CONTROL:

-64dB to -33dB in 2dB steps
-32dB to 0dB in 1dB steps

Reverse phase toggle switch
on the back, one per channel

Ground toggle switch on the
back, one per RCA-input