CROWN / 135MA High Impedance Power Amplifier

This is a high impedance power amplifier made by CROWN. It is easy to operate and has excellent cost performance.

■High impedance power amplifier
■35W
■3.7kg

■Features
Equipped with most of the functions required for a broadcasting system in a small commercial space. Simply connect the input device and speakers to broadcast in-store with high quality. In addition, it is easy to operate and has excellent cost performance, so you can easily introduce the excellent sound quality of CROWN power amplifiers.

■Equipped with most of the functions required for a broadcasting system in a small commercial space
・The 135MA has a 3-channel mixer, and the 160MA has a 4-channel mixer. In addition to switching between microphone and line levels, channel 1 can also supply 15V phantom power, making it compatible with condenser microphones. The other channels are line inputs, which are convenient for inputting CD players, etc.
・Equipped with a ducking function that reduces the volume of other channels when a signal is input to channel 1, and smoothly returns to the original volume when the signal is finished. You can also mute signals other than channel 1 at hand using external contacts such as switches.
・The 135MA has a 35W amplifier output, and the 160MA has a 60W amplifier output. Speaker connections support high impedance as well as low impedance. One unit can efficiently drive multiple speakers. It also has a tone control function to adjust the sound quality of the output signal, and a preamp output terminal for connecting to other power amplifiers or recording equipment.

■ Easy to operate even for staff who are unfamiliar with audio equipment
- Only functions used in actual operation, such as input/output level control knobs and power switch, are placed on the front panel to prevent incorrect operation. The knobs are click-type, so even if you change the settings, they can be easily reproduced.
- Each channel has an indicator that detects the input signal, and the amplifier output has an indicator that detects clip in addition to the input signal indicator, so you can check the signal status at a glance even in dark places.
■ Excellent installation
- Uses a natural cooling method that produces extremely low operating noise. It is also suitable for use in quiet spaces.
- The compact body allows it to be installed in a small space under the cash register, and one or two 135MA and 160MA units can be installed in an EIA2U space using optional rack mounting brackets.


■Input
Number of channels: 3
Terminals/type:
ch1: Euroblock (balanced)
ch2-3: RCA (unbalanced)
Impedance: Euroblock (mic): 2.2kΩ, Euroblock (line): 10kΩ, RCA: 10kΩ
Input sensitivity
ch1 mic: 3mV
ch1 line: 800mV
ch2-3: 400mV
Phantom power: 15V (ch1 only)

■Power amplifier output
Number of channels: 1
Channel output:
8Ω: 35W
70/100V: 35W
Terminals: Screw
■Frequency response (50Hz-20kHz, 8Ω): ±1dB
■Signal-to-noise ratio
ch1 mic: 58dB or more,
ch1 line: 60dB or more,
ch2-3: 78dB or more
■THD+N: 0.5% or less (@1kHz)
■Indicators: Signal (input/output), Clip (output), Power
■Power supply: AC100V, 50/60Hz
■Power consumption (1/8 output, pink noise, 8Ω): 36W
■Dimensions (W×H×D): 210×90×277mm (excluding protrusions)
■Weight: 3.7kg
■Accessories
1 x 3-pin Euroblock connector (for preamp output terminal),
1 x 4-pin Euroblock connector (for telephone output terminal),
1 x 5-pin Euroblock connector (for microphone/line input terminal),
Power cord, Japanese instruction manual