KRAMER 903 4×1 Personal Stereo Audio Amplifier & Switcher

INPUTS:    1 unbalanced stereo audio 1Vpp/50kΩ on a 3.5mm mini jack; 3 unbalanced stereo audio 1Vpp/50kΩ on RCA connectors.
OUTPUTS:    Stereo headphone on a 6.5mm connector; loudspeakers on a terminal block connector; automatic switching when a headphone is plugged in.
OUTPUT POWER:    2x10W (4Ω).
OUTPUT MUSIC POWER:    2x40W (4Ω).
BANDWIDTH (-3dB):    20kHz.
S/N RATIO:    77dB @1kHz.
CROSSTALK:    -73dB @1kHz, all hostile.
CONTROLS:    Input selector switches: bass (70Hz), mid (1kHz), treble (15kHz): +/-13dB; volume, balance and loudness controls.
COUPLING:    AC.
AUDIO THD + NOISE:    0.5%.
AUDIO 2nd HARMONIC:    0.3%.
POWER SOURCE:    12V DC, up to 2.5A.
DIMENSIONS:    19cm x 13.5cm x 2.5cm (7.5” x 5.3” x 0.98”) W, D, H.
WEIGHT:    0.6kg (1.32lbs) approx.
ACCESSORIES:    Power supply.
OPTIONS:    RK-T2B 19" rack adapter.

The TP-105 and TP-105HD are line drivers and distribution amplifiers for twisted pair signals. They take a twisted pair input and distribute it to 2 identical twisted pair outputs.

• Max. Resolution - WUXGA & 1080p (TP-105HD).
• Twisted Pair Output - RJ-45 connectors.
• Level (Gain) and EQ (Peaking) Controls.
• System Range - Up to 100 meters (320ft).
• Power Connect System - Only one unit in a system, the transmitter or the receiver needs to be connected to a power source when the devices are within 50m (150ft) of each other.
• HDTV Compatible (TP-105HD).
• Cable - UTP (unshielded twisted pair) or STP (shielded twisted pair) such as CAT 5.

INPUT:    1 unbalanced stereo audio, 1Vpp/50kΩ on a 3.5mm mini jack; 3 unbalanced stereo audio, 1Vpp/50kΩ on RCA connectors.
OUTPUTS:    Stereo headphone on a 6.5mm connector; loudspeakers on a terminal block connector; automatic switching when a headphone is plugged in.
BANDWIDTH (-3dB):    20kHz.
S/N RATIO:    68dB unweighted.
CONTROL:    Input selector switches: bass (70Hz.), mid (1kHz), treble (15kHz): +/-15dB; volume, balance, and loudness controls.
OUTPUT POWER:    4.5W RMS per channel into 4Ω @15V supply.
THD+NOISE:    0.059% @1kHz, 1V.
2nd HARMONIC:    0.025%.
POWER SOURCE:    12-15V DC, 22V max, up to 1A.
DIMENSIONS:    19cm x 13.5cm x 2.5cm (7.5” x 5.3” x 0.98”) W, D, H.
WEIGHT:    0.6kg (1.32lbs) approx.
ACCESSORIES:    Power supply.
OPTIONS:    RK-T2B 19" rack adapter.

INPUTS:    2 balanced stereo audio +4dBu/50kΩ on XLR (F) connectors.
OUTPUTS:    10 balanced stereo audio +4dBu/50Ω on XLR (M) connectors.
MAX. OUTPUT LEVEL:    23.8Vpp.
BANDWIDTH (-3dB):    >100kHz.
S/N RATIO:    89.3dB.
CROSSTALK:    -78dB.
CONTROLS:    Level (x2): -0.7dB to +5.1dB, mode selector switches.
COUPLING:    AC (input); DC (output).
AUDIO THD + NOISE:    0.081%.
AUDIO 2nd HARMONIC:    0.006%.
POWER SOURCE:    230V AC, (115V AC USA), 6VA.
DIMENSIONS:    19" x 7" x 1U W, D, H, rack mountable.
WEIGHT:    2.6kg (5.7lbs) approx.
ACCESSORIES:    Power cord.

INPUTS:    5 unbalanced stereo audio, 1Vpp/50kΩ on RCA connectors.
OUTPUT:    1 unbalanced stereo audio, 1Vpp/100Ω on RCA connectors.
MAX AUDIO OUTPUT:    3Vpp.
AUDIO BANDWIDTH (-3dB):    100kHz.
GAIN RANGE:    60dB (via underside accessible trimmers).
AUDIO S/N RATIO:    Better than 78dB.
CONTROL:    5 front panel buttons, contact closure via the link connector.
THD:    Less than 0.08%.
POWER SOURCE:    12V DC, 100mA.
DIMENSIONS:    16.5cm x 12cm x 4.5cm (6.5” x 4.7” x 1.8”) W, D, H.
WEIGHT:    0.62kg (1.4lbs) approx.
ACCESSORIES:    Power supply.
OPTIONS:    RK-1 19" rack adapter.

INPUTS:    4 balanced stereo audio +4dBu/50kΩ on XLR (F) connectors.
OUTPUTS:    20 balanced stereo audio +4dBu/50Ω on XLR (M) connectors.
MAX. OUTPUT LEVEL:    23.8Vpp.
BANDWIDTH (-3dB):    >100kHz.
S/N RATIO:    89.3dB.
CROSSTALK:    -78dB.
CONTROLS:    Level (x4): -0.7dB to +5.1dB, mode selector switches.
COUPLING:    AC (input); DC (output).
AUDIO THD + NOISE:    0.081%.
AUDIO 2nd HARMONIC:    0.006%.
POWER SOURCE:    230V AC, (115V AC USA), 15VA.
DIMENSIONS:    19" x 7" x 2U W, D, H, rack mountable.
WEIGHT:    3.5kg (7.7lbs) approx.
ACCESSORIES:    Power cord, rack "ears“.