Micro AMP 4 mkII and Micro AMP 4/2 technical specifications

The Micro AMP 4 mkII and Micro AMP 4/2 provide four headphone outputs, each with its own volume control. 

The Micro AMP 4 mkII is a legacy model; its information remains available to support installed units.

Shared specifications

• Four stereo headphone outputs on 3.5 mm jacks.
• One volume potentiometer for each headphone output.
• Status LED.
• External DC power connector: 2.1 mm / 5.5 mm.

Micro AMP 4 mkII: audio input

One unbalanced stereo 0 dBu line-level audio input on RCA connectors.

Micro AMP 4/2: inputs and source selection

• Two unbalanced stereo 0 dBu line-level audio inputs on RCA connectors.
• Two independent groups of two headphone outputs.
• Two input selectors, one for each group.
• 2 × 2 input contacts on 3.81 mm removable terminal blocks to select the audio source for each pair of headphone outputs.

The selection push buttons can be mounted remotely on furniture or a kiosk and connected to the removable terminal blocks.

Headphone output power

Power supply and consumption

• Nominal supply voltage: 12 V DC.
• Reverse polarity protection.
• Typical consumption at 12 V and maximum listening level with four 32 Ω headphones: 150 mA.
• Standby consumption at 12 V: less than 30 mA.

Temperatures, dimensions and weight

• Operating temperature: 0 to +60 °C.
• Storage temperature: −20 to +60 °C.
• Width: 143 mm.
• Height: 44 mm.
• Stated format: 1/3 of a 19-inch rack, 1U.
• Weight: 250 g with removable terminal blocks.
• Depth without/with removable terminal blocks: 100/107 mm.

Accessories

• Rack mounting shelf.
• Wall mounting plate.
• Push buttons.

The optional shelf accommodates up to three modules.