Marenius Elektronikutveckling AB

Design & production of high-quality electronics in Sweden

PHONE AMP
STEREO HEADPHONES AMPLIFIER

mm3100

PHONE AMP is an easy-to-use headphones amplifier. It is suitable for all situations where there is a need for connecting a line level audio signal to a headphone.

Multi-purpose amplifier
PHONE AMP will drive any kind of headphone within the impedance range 32 ohms to 600 ohms.
Gain is adjustable from mute to +14 dB, this equals 5X.
Any unbalanced line level signal will be sufficient as a source.

Ultra-low power consumption
The unit is powered by a single 9 Volts alkaline
battery.
It will keep the unit in work for more than 40 hours. Even when battery voltage drops to below 6 Volts the unit will keep on working.
A green front panel LED will be lit as long as the battery is OK.

Easy to use
A miniature power switch and a gain knob are
all controls there is.
Input sockets are RCA type, while output is 3,5
mm socket. By using an adapter it can connect
to a headphone with 1/4” plug.

Good-looking case
PHONE AMP is housed in a plastic case with a
rubber-like

Number of channels	2
Input gain, LINE	max 14 dB
Maximum input levels	+ 24 dBu
Dynamic range (A-weighted)	> 100 dB
Frequency response	20 Hz – 20 kHz +0/-1,5 dB
THD+N 0 dB gain, 1 kHz, 300 Ω	0,008% @ 0 dBu in
DIM30 @ 1 kHz	< 0,001%
Crosstalk @ 1 kHz	> 84 dB
Power @ 0 dBu, 300 Ω	9 Volts DC @ 10 mA
Size WxHxD	80 x 24 x 120 mm, sockets and knobs excl.
Weight	100 grams, excl. battery

PHONE AMP data sheet + Manual

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MARENIUS
ELEKTRONIKUTVECKLING AB
P.O. BOX 5086
SE-42605 V FROLUNDA
SWEDEN
Phone +46 31 691610
Fax +46 31 693188
Mail info@marenius.com

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