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Signature HA1M
2 input Stereo Headphone Amplifier

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The Signature HA1M is a broadcast specification 2 channel headphone amplifier, designed to operate in a mono or a stereo mode.

The HA1M has 2 x XLR inputs that can be used as either a stereo input, or as 2 x mono inputs. There is a selector switch to change between mono and stereo modes.

In stereo mode, the left input goes to the left ear, and the right input goes to the right ear. Each input has its own level pot for adjusting the volume level in the left or right ear.

In the mono mode, each input goes to both headphone outputs. The level pots adjust the relevant input levels in both ears.

There are 2 x headphone outputs on jack sockets. One is 6.35mm and the other is 3.5mm. The headphone circuits can accept stereo connections, or mono connections from single earpieces. The headphone drivers are independent and so varying impedence connections can be used in either socket at the same time.

The rear panel has a single XLR output that is a mix of both inputs.

Rear panel inputs and outputs are electronically balanced on XLRs and can accommodate unbalanced connections if required.

Power is provided by an internal switch mode power supply, with a wide input range. There is also an input for external 12V DC power. The 12V DC input can be connected to the optional Signature PS1external DC Master Power Station, for situations where a redundant power supply is desirable.

May be delivered with a black finish

AUDIO HEADPHONES
Frequency Response: Maximum Output Level: +20dB into 1K Ohms
Distortion: <0.015% THD @ 100Hz & 10kHz Reference +8dBu output
Noise: >-89dB @ lineup unweighted RMS (22Hz to 22kHz)
Output Type: Sophisticated electronically balanced can accept mono or stereo jacks and automatic level correction for low or high impedance headphones
Headphone Impedance: 32 - 1000 Ohms

AUDIO MIX OUT
Frequency Response: Maximum Output Level: +24dBu
Distortion: <0.02% @ 100Hz, 1kHz & 10kHz Reference to +8dBu output
Noise: >-90dB @ lineup unweighted RMS (22Hz to 22kHz)
Output Type: Electronically balanced (can be wired unbalanced)
Output Impedance: 50 Ohms

AUDIO GENERAL
Maximum Input Level: +20dB
Front Panel Pot Gain Range: -70dB to +10dB

POWER
Mains Input: Filtered IEC 100 to 240VAC 47-63Hz
AC Consumption: 1.5 Watts @ 230VAC
DC Input: 4 Pin Neutrik XLR Plug +/- 12V
DC Consumption:  +12V 40mA, -12V 30mA
Internal Mains Fuse: 20mm 1A Anti Surge

PHYSICAL
Size: 336 x 123 x 44mm (LxDxH) no rack ears, 482mm 19" (1RU) with rack ears
Weight: 0.94Kg
Mechanics: All aluminium construction, anodised and laser etched
Shipping Carton: Rugged export quality cardboard carton 610 x 420 x 130mm (LxDxH)
Shipping Weight: 2.35Kg

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