KRAMER 902 4×1 Personal Stereo Audio Amplifier & Switcher

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: 1 unbalanced audio stereo, up to 26 Vpp/27kΩ on RCA connectors. 1 balanced audio stereo, up to 25 Vpp/18kΩ on detachable terminal blocks.
OUTPUTS: 1 balanced audio stereo, up to 26 Vpp/50Ω on detachable terminal blocks. 1 unbalanced audio stereo, up to 25 Vpp/100Ω on RCA connectors.
VIDEO BANDWIDTH (-3dB): 50kHz.
GAIN RANGE: -13 to + 5.2 dB (Unbal. to Bal.), -51 to + 6 dB (Bal. to Unbal.) with underside accessible trimmers.
S/N RATIO: 82 dB (balanced to unbalanced), unweighted.
COUPLING: AC.
THD+NOISE: 0.013%.
2nd HARMONIC: 0.001%.
POWER SOURCE: 12 VDC, 150mA.
DIMENSIONS: 12cm x 7.5cm x 2.5cm (4.7” x 2.95” x 0.98”, W, D, H.).
Kramer 482 WEIGHT: 0.3 kg (0.66 lbs.) approx.
Kramer 482 ACCESSORIES: Power supply, mounting brackets.
Kramer 482 OPTIONS: Model VA-50P power supply with six 12VDC outlets, RK-T1, RK-T3, 19” rack adapters.

INPUTS:    8 video, 1Vpp/75Ω on BNC connectors; 8 unbalanced stereo audio on RCA connectors.
OUTPUTS:    1 video, 1Vpp/75Ω on a BNC connector; 1 unbalanced stereo audio on an RCA connector.
BANDWIDTH (-3dB):    Video: 400MHz; audio: 100kHz.
SWITCHING SYSTEM:    Mechanical, break-before-make.
CROSSPOINTS:    1 of 8.
SIGNAL LEVELS:    Up to 3Vpp video, +30dBu audio.
DIMENSIONS:    19" x 7" x 1U W, D, H, rack mountable.
WEIGHT:    1.5kg (3.3lbs) approx.

INPUTS:    1 unbalanced stereo audio, 1Vpp/50kΩ on RCA connectors; 1 mono microphone, 5mV/3.2kΩ (condenser) 4.8kΩ (dynamic) with a type selector, on a 6.5mm phone jack.
OUTPUTS:    Unbalanced stereo audio 2W/4Ω per channel on both 3.5mm mini jack and 4-pole detachable terminal block speaker output.
MAX. OUTPUT LEVEL:    8Vpp at Hi-Z load (headphones).
BANDWIDTH (-3dB):    37kHz.
S/N RATIO:    74dB.
CONTROLS:    Input selector switch, bass +/-10dB @100Hz, treble +/-12dB @10kHz, volume, balance.
COUPLING:    AC.
AUDIO THD + NOISE:    0.04%.
AUDIO 2nd HARMONIC:    0.24%.
CROSSTALK:    -60dB @1kHz, 20kHz.
POWER SOURCE:    12V DC, 60mA.
DIMENSIONS:    12cm x 7.5cm x 2.5 cm (4.7” x 2.95” x 0.98”) W, D, H.
WEIGHT:    0.3kg (0.66 lbs) approx.
ACCESSORIES:    Power supply, mounting bracket.
OPTIONS:    RK-3T 19" rack adapter.

INPUTS:    8 unbalanced stereo audio, on RCA type connectors.
OUTPUT:    1 unbalanced stereo audio, on RCA type connectors.
SWITCHING SYSTEM:    Mechanical, break-before-make.
CROSSPOINTS:    1 of 8.
SIGNAL LEVELS:    Up to +30dBu.
BANDWIDTH(-3dB):    25kHz.
DIMENSIONS:    18.8cm x 10.2cm x 4.4cm (7.4” x 4” x 1.7”) W, D, H.
WEIGHT:    0.64kg (1.4lbs) approx.
OPTIONS:    RK-81 19” rack adapter.

INPUTS:    4 balanced stereo audio, +4dBu typical, on XLR connectors.
OUTPUT:    1 balanced stereo audio, +4dBu typical, on XLR connectors.
SWITCHING SYSTEM:    Mechanical, break-before-make.
BANDWIDTH (-3dB):    100kHz (audio).
CROSSPOINTS:    4 x 2 for audio stereo.
SIGNAL LEVELS:    Up to +30dBu.
DIMENSIONS:    15.3cm x 6.6cm x 7.6cm (6” x 2.6” x 3”) W, D, H.
WEIGHT:    0.57kg (1.27lbs) approx.
OPTIONS:    RK-4X 19" rack adapter.